diff --git a/tests/ActiveQueryFindTest.php b/tests/ActiveQueryFindTest.php
index e59d63da9..8e0c41d30 100644
--- a/tests/ActiveQueryFindTest.php
+++ b/tests/ActiveQueryFindTest.php
@@ -20,8 +20,6 @@ abstract class ActiveQueryFindTest extends TestCase
 {
     public function testFindAll(): void
     {
-        $this->checkFixture($this->db(), 'customer', true);
-
         $customerQuery = new ActiveQuery(Customer::class);
         $this->assertCount(1, $customerQuery->findAll(['id' => 1]));
         $this->assertCount(3, $customerQuery->findAll(['id' => [1, 2, 3]]));
@@ -29,8 +27,6 @@ public function testFindAll(): void
 
     public function testFindScalar(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(Customer::class);
 
         /** query scalar */
@@ -41,8 +37,6 @@ public function testFindScalar(): void
 
     public function testFindExists(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(Customer::class);
 
         $this->assertTrue($customerQuery->where(['[[id]]' => 2])->exists());
@@ -54,8 +48,6 @@ public function testFindExists(): void
 
     public function testFindColumn(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(Customer::class);
 
         $this->assertEquals(
@@ -63,7 +55,7 @@ public function testFindColumn(): void
             $customerQuery->select('[[name]]')->column()
         );
 
-        $this->assertEquals(
+        $this->assertSame(
             ['user3', 'user2', 'user1'],
             $customerQuery->orderBy(['[[name]]' => SORT_DESC])->select('[[name]]')->column()
         );
@@ -71,8 +63,6 @@ public function testFindColumn(): void
 
     public function testFindBySql(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(Customer::class);
 
         /** find one() */
@@ -94,8 +84,6 @@ public function testFindBySql(): void
 
     public function testFindLazyViaTable(): void
     {
-        $this->checkFixture($this->db(), 'order');
-
         $orderQuery = new ActiveQuery(Order::class);
 
         $orders = $orderQuery->findByPk(2);
@@ -108,8 +96,6 @@ public function testFindLazyViaTable(): void
 
     public function testFindEagerViaTable(): void
     {
-        $this->checkFixture($this->db(), 'order');
-
         $orderQuery = new ActiveQuery(Order::class);
         $orders = $orderQuery->with('books')->orderBy('id')->all();
         $this->assertCount(3, $orders);
@@ -149,8 +135,6 @@ public function testFindEagerViaTable(): void
      */
     public function testFindCompositeRelationWithJoin(): void
     {
-        $this->checkFixture($this->db(), 'order_item');
-
         $orderItemQuery = new ActiveQuery(OrderItem::class);
 
         /** @var $orderItems OrderItem */
@@ -165,8 +149,6 @@ public function testFindCompositeRelationWithJoin(): void
 
     public function testFindSimpleRelationWithJoin(): void
     {
-        $this->checkFixture($this->db(), 'order');
-
         $orderQuery = new ActiveQuery(Order::class);
 
         $orders = $orderQuery->findByPk(1);
@@ -184,8 +166,6 @@ public function testFindSimpleRelationWithJoin(): void
 
     public function testFindOneByColumnName(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customer = new ActiveQuery(Customer::class);
         $customerQuery = new CustomerQuery(Customer::class);
 
@@ -202,8 +182,6 @@ public function testFindOneByColumnName(): void
 
     public function testFind(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(Customer::class);
         $this->assertInstanceOf(ActiveQueryInterface::class, $customerQuery);
 
@@ -264,8 +242,6 @@ public function testFind(): void
 
     public function testFindAsArray(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         /** asArray */
         $customerQuery = new ActiveQuery(Customer::class);
         $customer = $customerQuery->where(['id' => 2])->asArray()->one();
@@ -302,8 +278,6 @@ public function testFindAsArray(): void
 
     public function testFindIndexBy(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(Customer::class);
 
         $customers = $customerQuery->indexBy('name')->orderBy('id')->all();
@@ -329,8 +303,6 @@ public function testFindIndexBy(): void
 
     public function testFindIndexByAsArray(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(Customer::class);
         $customers = $customerQuery->asArray()->indexBy('name')->all();
         $this->assertCount(3, $customers);
@@ -373,8 +345,6 @@ public function testFindIndexByAsArray(): void
 
     public function testFindCount(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(Customer::class);
         $this->assertEquals(3, $customerQuery->count());
         $this->assertEquals(1, $customerQuery->where(['id' => 1])->count());
@@ -391,8 +361,6 @@ public function testFindCount(): void
 
     public function testFindLimit(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         /** one */
         $customerQuery = new ActiveQuery(Customer::class);
         $customer = $customerQuery->orderBy('id')->one();
@@ -442,8 +410,6 @@ public function testFindLimit(): void
 
     public function testFindComplexCondition(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(Customer::class);
 
         $this->assertEquals(
@@ -479,7 +445,7 @@ public function testFindComplexCondition(): void
 
     public function testFindNullValues(): void
     {
-        $this->checkFixture($this->db(), 'customer');
+        $this->reloadFixtureAfterTest();
 
         $customerQuery = new ActiveQuery(Customer::class);
 
@@ -494,8 +460,6 @@ public function testFindNullValues(): void
 
     public function testFindEager(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(Customer::class);
         $customers = $customerQuery->with('orders')->indexBy('id')->all();
 
@@ -531,8 +495,6 @@ public function testFindEager(): void
 
     public function testFindEagerViaRelation(): void
     {
-        $this->checkFixture($this->db(), 'order');
-
         $orderQuery = new ActiveQuery(Order::class);
         $orders = $orderQuery->with('items')->orderBy('id')->all();
         $this->assertCount(3, $orders);
@@ -547,8 +509,6 @@ public function testFindEagerViaRelation(): void
 
     public function testFindNestedRelation(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(Customer::class);
         $customers = $customerQuery->with('orders', 'orders.items')->indexBy('id')->all();
 
@@ -583,8 +543,6 @@ public function testFindNestedRelation(): void
      */
     public function testFindEagerViaRelationPreserveOrder(): void
     {
-        $this->checkFixture($this->db(), 'order');
-
         $orderQuery = new ActiveQuery(Order::class);
         $orders = $orderQuery->with('itemsInOrder1')->orderBy('created_at')->all();
         $this->assertCount(3, $orders);
@@ -613,8 +571,6 @@ public function testFindEagerViaRelationPreserveOrder(): void
 
     public function testFindEagerViaRelationPreserveOrderB(): void
     {
-        $this->checkFixture($this->db(), 'order');
-
         /** different order in via table. */
         $orderQuery = new ActiveQuery(Order::class);
         $orders = $orderQuery->with('itemsInOrder2')->orderBy('created_at')->all();
@@ -644,8 +600,6 @@ public function testFindEagerViaRelationPreserveOrderB(): void
 
     public function testFindEmptyInCondition(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(Customer::class);
         $customers = $customerQuery->where(['id' => [1]])->all();
         $this->assertCount(1, $customers);
@@ -662,8 +616,6 @@ public function testFindEmptyInCondition(): void
 
     public function testFindEagerIndexBy(): void
     {
-        $this->checkFixture($this->db(), 'order');
-
         $orderQuery = new ActiveQuery(Order::class);
         $order = $orderQuery->with('itemsIndexed')->where(['id' => 1])->one();
         $this->assertTrue($order->isRelationPopulated('itemsIndexed'));
@@ -685,8 +637,6 @@ public function testFindEagerIndexBy(): void
 
     public function testFindLazy(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(Customer::class);
         $customer = $customerQuery->findByPk(2);
         $this->assertFalse($customer->isRelationPopulated('orders'));
@@ -711,8 +661,6 @@ public function testFindLazy(): void
 
     public function testFindLazyVia(): void
     {
-        $this->checkFixture($this->db(), 'order');
-
         $orderQuery = new ActiveQuery(Order::class);
         $order = $orderQuery->findByPk(1);
 
@@ -724,8 +672,6 @@ public function testFindLazyVia(): void
 
     public function testFindByPkComposite(): void
     {
-        $this->checkFixture($this->db(), 'order_item');
-
         $query = new ActiveQuery(OrderItem::class);
 
         $orderItem = $query->findByPk([1, 1]);
@@ -742,8 +688,6 @@ public function testFindByPkComposite(): void
 
     public function testFindByPkWithoutPk(): void
     {
-        $this->checkFixture($this->db(), 'type');
-
         $query = new ActiveQuery(Type::class);
 
         $this->expectException(InvalidConfigException::class);
@@ -754,8 +698,6 @@ public function testFindByPkWithoutPk(): void
 
     public function testFindByPkWithJoin(): void
     {
-        $this->checkFixture($this->db(), 'order');
-
         $query = new ActiveQuery(Order::class);
 
         $query->joinWith('items');
diff --git a/tests/ActiveQueryTest.php b/tests/ActiveQueryTest.php
index 85e3ddf5b..024639f86 100644
--- a/tests/ActiveQueryTest.php
+++ b/tests/ActiveQueryTest.php
@@ -37,8 +37,6 @@ abstract class ActiveQueryTest extends TestCase
 {
     public function testOptions(): void
     {
-        $this->checkFixture($this->db(), 'customer', true);
-
         $customerQuery = new ActiveQuery(Customer::class);
 
         $query = $customerQuery->on(['a' => 'b'])->joinWith('profile');
@@ -51,24 +49,18 @@ public function testOptions(): void
 
     public function testPrepare(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $query = new ActiveQuery(Customer::class);
         $this->assertInstanceOf(QueryInterface::class, $query->prepare($this->db()->getQueryBuilder()));
     }
 
     public function testPopulateEmptyRows(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $query = new ActiveQuery(Customer::class);
         $this->assertEquals([], $query->populate([]));
     }
 
     public function testPopulateFilledRows(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $query = new ActiveQuery(Customer::class);
         $rows = $query->all();
         $result = $query->populate($rows);
@@ -77,8 +69,6 @@ public function testPopulateFilledRows(): void
 
     public function testAll(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $query = new ActiveQuery(Customer::class);
 
         foreach ($query->all() as $customer) {
@@ -90,32 +80,24 @@ public function testAll(): void
 
     public function testOne(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $query = new ActiveQuery(Customer::class);
         $this->assertInstanceOf(Customer::class, $query->one());
     }
 
     public function testCreateCommand(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $query = new ActiveQuery(Customer::class);
         $this->assertInstanceOf(AbstractCommand::class, $query->createCommand());
     }
 
     public function testQueryScalar(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $query = new ActiveQuery(Customer::class);
         $this->assertEquals('user1', Assert::invokeMethod($query, 'queryScalar', ['name']));
     }
 
     public function testGetJoinWith(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $query = new ActiveQuery(Customer::class);
         $query->joinWith('profile');
         $this->assertEquals([[['profile'], true, 'LEFT JOIN']], $query->getJoinWith());
@@ -123,8 +105,6 @@ public function testGetJoinWith(): void
 
     public function testInnerJoinWith(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $query = new ActiveQuery(Customer::class);
         $query->innerJoinWith('profile');
         $this->assertEquals([[['profile'], true, 'INNER JOIN']], $query->getJoinWith());
@@ -132,8 +112,6 @@ public function testInnerJoinWith(): void
 
     public function testBuildJoinWithRemoveDuplicateJoinByTableName(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $query = new ActiveQuery(Customer::class);
         $query->innerJoinWith('orders')->joinWith('orders.orderItems');
         Assert::invokeMethod($query, 'buildJoinWith');
@@ -153,16 +131,12 @@ public function testBuildJoinWithRemoveDuplicateJoinByTableName(): void
 
     public function testGetQueryTableNameFromNotSet(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $query = new ActiveQuery(Customer::class);
         $this->assertEquals(['customer', 'customer'], Assert::invokeMethod($query, 'getTableNameAndAlias'));
     }
 
     public function testGetQueryTableNameFromSet(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $query = new ActiveQuery(Customer::class);
         $query->from(['alias' => 'customer']);
         $this->assertEquals(['customer', 'alias'], Assert::invokeMethod($query, 'getTableNameAndAlias'));
@@ -170,8 +144,6 @@ public function testGetQueryTableNameFromSet(): void
 
     public function testOnCondition(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $on = ['active' => true];
         $params = ['a' => 'b'];
 
@@ -183,8 +155,6 @@ public function testOnCondition(): void
 
     public function testAndOnConditionOnNotSet(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $on = ['active' => true];
         $params = ['a' => 'b'];
         $query = new ActiveQuery(Customer::class);
@@ -195,8 +165,6 @@ public function testAndOnConditionOnNotSet(): void
 
     public function testAndOnConditionOnSet(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $onOld = ['active' => true];
         $on = ['active' => true];
         $params = ['a' => 'b'];
@@ -211,8 +179,6 @@ public function testAndOnConditionOnSet(): void
 
     public function testOrOnConditionOnNotSet(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $on = ['active' => true];
         $params = ['a' => 'b'];
 
@@ -226,8 +192,6 @@ public function testOrOnConditionOnNotSet(): void
 
     public function testOrOnConditionOnSet(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $onOld = ['active' => true];
         $on = ['active' => true];
         $params = ['a' => 'b'];
@@ -252,8 +216,6 @@ public function testViaWithEmptyPrimaryModel(): void
 
     public function testViaTable(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $order = new Order();
 
         $query = new ActiveQuery(Customer::class);
@@ -266,8 +228,6 @@ public function testViaTable(): void
 
     public function testAliasNotSet(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $query = new ActiveQuery(Customer::class);
 
         $query->alias('alias');
@@ -278,8 +238,6 @@ public function testAliasNotSet(): void
 
     public function testAliasYetSet(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $aliasOld = ['old'];
 
         $query = new ActiveQuery(Customer::class);
@@ -292,8 +250,6 @@ public function testAliasYetSet(): void
 
     public function testGetTableNamesNotFilledFrom(): void
     {
-        $this->checkFixture($this->db(), 'profile');
-
         $query = new ActiveQuery(Profile::class);
         $tableName = Profile::TABLE_NAME;
 
@@ -307,8 +263,6 @@ public function testGetTableNamesNotFilledFrom(): void
 
     public function testGetTableNamesWontFillFrom(): void
     {
-        $this->checkFixture($this->db(), 'profile');
-
         $query = new ActiveQuery(Profile::class);
 
         $this->assertSame([], $query->getFrom());
@@ -326,8 +280,6 @@ public function testGetTableNamesWontFillFrom(): void
      */
     public function testDeeplyNestedTableRelationWith(): void
     {
-        $this->checkFixture($this->db(), 'category', true);
-
         /** @var $category Category */
         $categoriesQuery = new ActiveQuery(Category::class);
 
@@ -355,8 +307,6 @@ public function testDeeplyNestedTableRelationWith(): void
 
     public function testGetSql(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $query = new ActiveQuery(Customer::class);
 
         $query->sql('SELECT * FROM {{customer}} ORDER BY [[id]] DESC');
@@ -366,8 +316,6 @@ public function testGetSql(): void
 
     public function testCustomColumns(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(Customer::class);
 
         /** find custom column */
@@ -387,8 +335,6 @@ public function testCustomColumns(): void
 
     public function testCallFind(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(Customer::class);
 
         /** find count, sum, average, min, max, scalar */
@@ -406,8 +352,6 @@ public function testCallFind(): void
      */
     public function testCountWithFindBySql(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(Customer::class);
 
         $query = $customerQuery->findBySql('SELECT * FROM {{customer}}');
@@ -419,8 +363,6 @@ public function testCountWithFindBySql(): void
 
     public function testDeeplyNestedTableRelation(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(Customer::class);
 
         $customers = $customerQuery->findByPk(1);
@@ -442,8 +384,6 @@ public function testDeeplyNestedTableRelation(): void
      */
     public function testDeeplyNestedTableRelation2(): void
     {
-        $this->checkFixture($this->db(), 'category');
-
         $categoryQuery = new ActiveQuery(Category::class);
 
         $categories = $categoryQuery->where(['id' => 1])->one();
@@ -469,8 +409,6 @@ public function testDeeplyNestedTableRelation2(): void
 
     public function testJoinWith(): void
     {
-        $this->checkFixture($this->db(), 'order');
-
         /** left join and eager loading */
         $orderQuery = new ActiveQuery(Order::class);
         $orders = $orderQuery->joinWith('customer')->orderBy('customer.id DESC, order.id')->all();
@@ -715,8 +653,6 @@ public function testJoinWith(): void
      */
     public function testJoinWithAndScope(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         /**  hasOne inner join */
         $customer = new CustomerQuery(Customer::class);
         $customers = $customer->active()->innerJoinWith('profile')->orderBy('customer.id')->all();
@@ -760,7 +696,7 @@ public function testJoinWithAndScope(): void
      */
     public function testJoinWithVia(): void
     {
-        $this->checkFixture($this->db(), 'order');
+        $this->reloadFixtureAfterTest();
 
         $orderQuery = new ActiveQuery(Order::class);
 
@@ -797,8 +733,6 @@ public static function aliasMethodProvider(): array
     public function testJoinWithAlias(string $aliasMethod): void
     {
         $orders = [];
-        $this->checkFixture($this->db(), 'order');
-
         /** left join and eager loading */
         $orderQuery = new ActiveQuery(Order::class);
         $query = $orderQuery->joinWith(['customer c']);
@@ -1034,8 +968,6 @@ public function testJoinWithAlias(string $aliasMethod): void
      */
     public function testJoinWithSameTable(): void
     {
-        $this->checkFixture($this->db(), 'order');
-
         /**
          * join with the same table but different aliases alias is defined in the relation definition without eager
          * loading
@@ -1154,8 +1086,6 @@ public function testJoinWithSameTable(): void
      */
     public function testJoinWithDuplicateSimple(): void
     {
-        $this->checkFixture($this->db(), 'order');
-
         /** left join and eager loading */
         $orderQuery = new ActiveQuery(Order::class);
 
@@ -1179,8 +1109,6 @@ public function testJoinWithDuplicateSimple(): void
      */
     public function testJoinWithDuplicateCallbackFiltering(): void
     {
-        $this->checkFixture($this->db(), 'order');
-
         /** inner join filtering and eager loading */
         $orderQuery = new ActiveQuery(Order::class);
 
@@ -1204,8 +1132,6 @@ public function testJoinWithDuplicateCallbackFiltering(): void
      */
     public function testJoinWithDuplicateCallbackFilteringConditionsOnPrimary(): void
     {
-        $this->checkFixture($this->db(), 'order');
-
         /** inner join filtering, eager loading, conditions on both primary and relation */
         $orderQuery = new ActiveQuery(Order::class);
 
@@ -1227,8 +1153,6 @@ public function testJoinWithDuplicateCallbackFilteringConditionsOnPrimary(): voi
      */
     public function testJoinWithDuplicateWithSubRelation(): void
     {
-        $this->checkFixture($this->db(), 'order');
-
         /** join with sub-relation */
         $orderQuery = new ActiveQuery(Order::class);
 
@@ -1253,8 +1177,6 @@ public function testJoinWithDuplicateWithSubRelation(): void
      */
     public function testJoinWithDuplicateTableAlias1(): void
     {
-        $this->checkFixture($this->db(), 'order');
-
         /** join with table alias */
         $orderQuery = new ActiveQuery(Order::class);
 
@@ -1280,8 +1202,6 @@ public function testJoinWithDuplicateTableAlias1(): void
      */
     public function testJoinWithDuplicateTableAlias2(): void
     {
-        $this->checkFixture($this->db(), 'order');
-
         /** join with table alias */
         $orderQuery = new ActiveQuery(Order::class);
 
@@ -1305,8 +1225,6 @@ public function testJoinWithDuplicateTableAlias2(): void
      */
     public function testJoinWithDuplicateTableAliasSubRelation(): void
     {
-        $this->checkFixture($this->db(), 'order');
-
         /** join with table alias sub-relation */
         $orderQuery = new ActiveQuery(Order::class);
 
@@ -1335,8 +1253,6 @@ public function testJoinWithDuplicateTableAliasSubRelation(): void
      */
     public function testJoinWithDuplicateSubRelationCalledInsideClosure(): void
     {
-        $this->checkFixture($this->db(), 'order');
-
         /** join with sub-relation called inside Closure */
         $orderQuery = new ActiveQuery(Order::class);
 
@@ -1365,8 +1281,6 @@ public function testJoinWithDuplicateSubRelationCalledInsideClosure(): void
 
     public function testAlias(): void
     {
-        $this->checkFixture($this->db(), 'order');
-
         $order = new Order();
 
         $query = new ActiveQuery(Order::class);
@@ -1384,8 +1298,6 @@ public function testAlias(): void
 
     public function testInverseOf(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         /** eager loading: find one and all */
         $customerQuery = new ActiveQuery(Customer::class);
         $customer = $customerQuery->with('orders2')->where(['id' => 1])->one();
@@ -1465,7 +1377,7 @@ public function testInverseOf(): void
 
     public function testUnlinkAllViaTable(): void
     {
-        $this->checkFixture($this->db(), 'order', true);
+        $this->reloadFixtureAfterTest();
 
         /** via table with delete. */
         $orderQuery = new ActiveQuery(Order::class);
@@ -1503,7 +1415,7 @@ public function testUnlinkAllViaTable(): void
 
     public function testIssues(): void
     {
-        $this->checkFixture($this->db(), 'category', true);
+        $this->reloadFixtureAfterTest();
 
         /** {@see https://github.com/yiisoft/yii2/issues/4938} */
         $categoryQuery = new ActiveQuery(Category::class);
@@ -1547,8 +1459,6 @@ public function testIssues(): void
 
     public function testPopulateWithoutPk(): void
     {
-        $this->checkFixture($this->db(), 'customer', true);
-
         /** tests with single pk asArray */
         $customerQuery = new ActiveQuery(Customer::class);
         $aggregation = $customerQuery
@@ -1667,7 +1577,7 @@ public function testPopulateWithoutPk(): void
 
     public function testLinkWhenRelationIsIndexed2(): void
     {
-        $this->checkFixture($this->db(), 'order');
+        $this->reloadFixtureAfterTest();
 
         $orderQuery = new ActiveQuery(Order::class);
         $order = $orderQuery->with('orderItems2')->where(['id' => 1])->one();
@@ -1685,8 +1595,6 @@ public function testLinkWhenRelationIsIndexed2(): void
 
     public function testEmulateExecution(): void
     {
-        $this->checkFixture($this->db(), 'order');
-
         $customerQuery = new ActiveQuery(Customer::class);
 
         $this->assertGreaterThan(0, $customerQuery->count());
@@ -1707,7 +1615,7 @@ public function testEmulateExecution(): void
      */
     public function testUnlinkAllOnCondition(): void
     {
-        $this->checkFixture($this->db(), 'item');
+        $this->reloadFixtureAfterTest();
 
         /** Ensure there are three items with category_id = 2 in the Items table */
         $itemQuery = new ActiveQuery(Item::class);
@@ -1739,7 +1647,7 @@ public function testUnlinkAllOnCondition(): void
      */
     public function testUnlinkAllOnConditionViaTable(): void
     {
-        $this->checkFixture($this->db(), 'item', true);
+        $this->reloadFixtureAfterTest();
 
         /** Ensure there are three items with category_id = 2 in the Items table */
         $itemQuery = new ActiveQuery(Item::class);
@@ -1770,8 +1678,6 @@ public function testUnlinkAllOnConditionViaTable(): void
      */
     public function testIndexByAfterLoadingRelations(): void
     {
-        $this->checkFixture($this->db(), 'order');
-
         $orderQuery = new ActiveQuery(Order::class);
         $orderQuery->with('customer')->indexBy(function (Order $order) {
             $this->assertTrue($order->isRelationPopulated('customer'));
@@ -1789,8 +1695,6 @@ public function testIndexByAfterLoadingRelations(): void
 
     public function testExtraFields(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(Customer::class);
 
         $query = $customerQuery->with('orders2')->where(['id' => 1])->one();
@@ -1823,8 +1727,6 @@ public function testRelationWhereParams(string $orderTableName, string $orderIte
     {
         $driverName = $this->db()->getDriverName();
 
-        $this->checkFixture($this->db(), 'order');
-
         $order = new Order();
         $orderItem = new OrderItem();
 
@@ -1861,8 +1763,6 @@ public function testRelationWhereParams(string $orderTableName, string $orderIte
 
     public function testOutdatedRelationsAreResetForExistingRecords(): void
     {
-        $this->checkFixture($this->db(), 'order_item', true);
-
         $orderItemQuery = new ActiveQuery(OrderItem::class);
         $orderItems = $orderItemQuery->findByPk([1, 1]);
         $this->assertEquals(1, $orderItems->getOrder()->getId());
@@ -1883,8 +1783,6 @@ public function testOutdatedRelationsAreResetForExistingRecords(): void
 
     public function testOutdatedCompositeKeyRelationsAreReset(): void
     {
-        $this->checkFixture($this->db(), 'dossier');
-
         $dossierQuery = new ActiveQuery(Dossier::class);
 
         $dossiers = $dossierQuery->findOne(['department_id' => 1, 'employee_id' => 1]);
@@ -1913,8 +1811,6 @@ public function testOutdatedCompositeKeyRelationsAreReset(): void
 
     public function testOutdatedViaTableRelationsAreReset(): void
     {
-        $this->checkFixture($this->db(), 'order', true);
-
         $orderQuery = new ActiveQuery(Order::class);
 
         $orders = $orderQuery->findByPk(1);
@@ -1940,8 +1836,6 @@ public function testOutdatedViaTableRelationsAreReset(): void
 
     public function testInverseOfDynamic(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(Customer::class);
 
         $customer = $customerQuery->findByPk(1);
@@ -1973,7 +1867,7 @@ public function testInverseOfDynamic(): void
 
     public function testOptimisticLock(): void
     {
-        $this->checkFixture($this->db(), 'document');
+        $this->reloadFixtureAfterTest();
 
         $documentQuery = new ActiveQuery(Document::class);
         $record = $documentQuery->findByPk(1);
@@ -1992,7 +1886,7 @@ public function testOptimisticLock(): void
 
     public function testOptimisticLockOnDelete(): void
     {
-        $this->checkFixture($this->db(), 'document', true);
+        $this->reloadFixtureAfterTest();
 
         $documentQuery = new ActiveQuery(Document::class);
         $document = $documentQuery->findByPk(1);
@@ -2007,7 +1901,7 @@ public function testOptimisticLockOnDelete(): void
 
     public function testOptimisticLockAfterDelete(): void
     {
-        $this->checkFixture($this->db(), 'document', true);
+        $this->reloadFixtureAfterTest();
 
         $documentQuery = new ActiveQuery(Document::class);
         $document = $documentQuery->findByPk(1);
@@ -2023,8 +1917,6 @@ public function testOptimisticLockAfterDelete(): void
     /** @link https://github.com/yiisoft/yii2/issues/9006 */
     public function testBit(): void
     {
-        $this->checkFixture($this->db(), 'bit_values');
-
         $bitValueQuery = new ActiveQuery(BitValues::class);
         $falseBit = $bitValueQuery->findByPk(1);
         $this->assertFalse($falseBit->val);
@@ -2036,7 +1928,7 @@ public function testBit(): void
 
     public function testUpdateProperties(): void
     {
-        $this->checkFixture($this->db(), 'order');
+        $this->reloadFixtureAfterTest();
 
         $orderQuery = new ActiveQuery(Order::class);
         $order = $orderQuery->findByPk(1);
@@ -2064,8 +1956,6 @@ public function testUpdateProperties(): void
      */
     public function testAmbiguousColumnFindOne(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new CustomerQuery(Customer::class);
 
         $customerQuery->joinWithProfile = true;
@@ -2079,8 +1969,6 @@ public function testAmbiguousColumnFindOne(): void
 
     public function testCustomARRelation(): void
     {
-        $this->checkFixture($this->db(), 'order_item');
-
         $orderItem = new ActiveQuery(OrderItem::class);
 
         $orderItem = $orderItem->findByPk([1, 1]);
@@ -2090,8 +1978,6 @@ public function testCustomARRelation(): void
 
     public function testPropertyValues(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $expectedValues = [
             'id' => 1,
             'email' => 'user1@example.com',
@@ -2111,8 +1997,6 @@ public function testPropertyValues(): void
 
     public function testPropertyValuesOnly(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customer = new ActiveQuery(Customer::class);
 
         $values = $customer->findByPk(1)->propertyValues(['id', 'email', 'name']);
@@ -2122,8 +2006,6 @@ public function testPropertyValuesOnly(): void
 
     public function testPropertyValuesExcept(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customer = new ActiveQuery(Customer::class);
 
         $values = $customer->findByPk(1)->propertyValues(null, ['status', 'bool_status', 'profile_id']);
@@ -2136,8 +2018,6 @@ public function testPropertyValuesExcept(): void
 
     public function testGetOldValue(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customer = new ActiveQuery(Customer::class);
 
         $query = $customer->findByPk(1);
@@ -2152,8 +2032,6 @@ public function testGetOldValue(): void
 
     public function testGetOldValues(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $expectedValues = [
             'id' => 1,
             'email' => 'user1@example.com',
@@ -2182,8 +2060,6 @@ public function testGetOldValues(): void
 
     public function testIsPropertyChanged(): void
     {
-        $this->checkFixture($this->db(), 'customer', true);
-
         $query = new ActiveQuery(Customer::class);
 
         $customer = $query->findByPk(1);
@@ -2203,7 +2079,7 @@ public function testIsPropertyChanged(): void
 
     public function testOldPropertyAfterInsertAndUpdate(): void
     {
-        $this->checkFixture($this->db(), 'customer');
+        $this->reloadFixtureAfterTest();
 
         $customer = new Customer();
 
@@ -2228,8 +2104,6 @@ public function testCheckRelationUnknownPropertyException(): void
     {
         self::markTestSkipped('There is no check for access to an unknown property.');
 
-        $this->checkFixture($this->db(), 'customer');
-
         $customer = new ActiveQuery(Customer::class);
 
         $query = $customer->findByPk(1);
@@ -2243,8 +2117,6 @@ public function testCheckRelationInvalidCallException(): void
     {
         self::markTestSkipped('There is no check for access to an unknown property.');
 
-        $this->checkFixture($this->db(), 'customer');
-
         $customer = new ActiveQuery(Customer::class);
 
         $query = $customer->findByPk(2);
@@ -2258,8 +2130,6 @@ public function testCheckRelationInvalidCallException(): void
 
     public function testGetRelationInvalidArgumentException(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customer = new ActiveQuery(Customer::class);
 
         $query = $customer->findByPk(1);
@@ -2276,8 +2146,6 @@ public function testGetRelationInvalidArgumentExceptionHasNoRelationNamed(): voi
     {
         self::markTestSkipped('The same as test testGetRelationInvalidArgumentException()');
 
-        $this->checkFixture($this->db(), 'customer');
-
         $customer = new ActiveQuery(Customer::class);
 
         $query = $customer->findByPk(1);
@@ -2294,8 +2162,6 @@ public function testGetRelationInvalidArgumentExceptionCaseSensitive(): void
     {
         self::markTestSkipped('The same as test testGetRelationInvalidArgumentException()');
 
-        $this->checkFixture($this->db(), 'customer');
-
         $customer = new ActiveQuery(Customer::class);
 
         $query = $customer->findByPk(1);
@@ -2310,8 +2176,6 @@ public function testGetRelationInvalidArgumentExceptionCaseSensitive(): void
 
     public function testExists(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customer = new ActiveQuery(Customer::class);
 
         $this->assertTrue($customer->where(['id' => 2])->exists());
@@ -2325,7 +2189,7 @@ public function testExists(): void
 
     public function testUnlink(): void
     {
-        $this->checkFixture($this->db(), 'customer');
+        $this->reloadFixtureAfterTest();
 
         /** has many without delete */
         $customerQuery = new ActiveQuery(Customer::class);
@@ -2369,7 +2233,7 @@ public function testUnlink(): void
 
     public function testUnlinkAllAndConditionSetNull(): void
     {
-        $this->checkFixture($this->db(), 'order_item_with_null_fk');
+        $this->reloadFixtureAfterTest();
 
         /** in this test all orders are owned by customer 1 */
         $orderWithNullFKInstance = new OrderWithNullFK();
@@ -2395,7 +2259,7 @@ public function testUnlinkAllAndConditionSetNull(): void
 
     public function testUnlinkAllAndConditionDelete(): void
     {
-        $this->checkFixture($this->db(), 'customer', true);
+        $this->reloadFixtureAfterTest();
 
         /** in this test all orders are owned by customer 1 */
         $orderInstance = new Order();
@@ -2421,7 +2285,7 @@ public function testUnlinkAllAndConditionDelete(): void
 
     public function testUpdate(): void
     {
-        $this->checkFixture($this->db(), 'customer');
+        $this->reloadFixtureAfterTest();
 
         $customerQuery = new ActiveQuery(Customer::class);
         $customer = $customerQuery->findByPk(2);
@@ -2465,7 +2329,7 @@ public function testUpdate(): void
 
     public function testUpdateCounters(): void
     {
-        $this->checkFixture($this->db(), 'order_item', true);
+        $this->reloadFixtureAfterTest();
 
         /** updateCounters */
         $pk = ['order_id' => 2, 'item_id' => 4];
@@ -2497,7 +2361,7 @@ public function testUpdateCounters(): void
 
     public function testDelete(): void
     {
-        $this->checkFixture($this->db(), 'customer', true);
+        $this->reloadFixtureAfterTest();
 
         /** delete */
         $customerQuery = new ActiveQuery(Customer::class);
@@ -2531,8 +2395,6 @@ public function testDelete(): void
      */
     public function testViaWithCallable(): void
     {
-        $this->checkFixture($this->db(), 'order', true);
-
         $orderQuery = new ActiveQuery(Order::class);
 
         $order = $orderQuery->findByPk(2);
@@ -2549,7 +2411,7 @@ public function testViaWithCallable(): void
 
     public function testLink(): void
     {
-        $this->checkFixture($this->db(), 'customer', true);
+        $this->reloadFixtureAfterTest();
 
         $customerQuery = new ActiveQuery(Customer::class);
         $customer = $customerQuery->findByPk(2);
@@ -2603,8 +2465,6 @@ public function testLink(): void
 
     public function testEqual(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerA = (new ActiveQuery(Customer::class))->findByPk(1);
         $customerB = (new ActiveQuery(Customer::class))->findByPk(2);
         $this->assertFalse($customerA->equals($customerB));
diff --git a/tests/ActiveRecordTest.php b/tests/ActiveRecordTest.php
index c762e516a..0d2d59fe5 100644
--- a/tests/ActiveRecordTest.php
+++ b/tests/ActiveRecordTest.php
@@ -26,6 +26,7 @@
 use Yiisoft\ActiveRecord\Tests\Stubs\ActiveRecord\Promotion;
 use Yiisoft\ActiveRecord\Tests\Stubs\ActiveRecord\Profile;
 use Yiisoft\ActiveRecord\Tests\Stubs\ActiveRecord\Type;
+use Yiisoft\ActiveRecord\Tests\Support\DbHelper;
 use Yiisoft\ActiveRecord\Tests\Support\ModelFactory;
 use Yiisoft\Db\Exception\Exception;
 use Yiisoft\Db\Exception\InvalidArgumentException;
@@ -41,7 +42,7 @@ abstract protected function createFactory(): Factory;
 
     public function testStoreNull(): void
     {
-        $this->checkFixture($this->db(), 'null_values', true);
+        $this->reloadFixtureAfterTest();
 
         $record = new NullValues();
 
@@ -89,7 +90,7 @@ public function testStoreNull(): void
 
     public function testStoreEmpty(): void
     {
-        $this->checkFixture($this->db(), 'null_values');
+        $this->reloadFixtureAfterTest();
 
         $record = new NullValues();
 
@@ -109,8 +110,6 @@ public function testStoreEmpty(): void
 
     public function testIsPrimaryKey(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customer = new Customer();
         $orderItem = new OrderItem();
 
@@ -131,8 +130,6 @@ public function testIsPrimaryKey(): void
 
     public function testOutdatedRelationsAreResetForNewRecords(): void
     {
-        $this->checkFixture($this->db(), 'order_item');
-
         $orderItem = new OrderItem();
 
         $orderItem->setOrderId(1);
@@ -154,8 +151,6 @@ public function testOutdatedRelationsAreResetForNewRecords(): void
 
     public function testDefaultValues(): void
     {
-        $this->checkFixture($this->db(), 'type');
-
         $arClass = new Type();
 
         $arClass->loadDefaultValues();
@@ -186,7 +181,7 @@ public function testDefaultValues(): void
 
     public function testCastValues(): void
     {
-        $this->checkFixture($this->db(), 'type');
+        $this->reloadFixtureAfterTest();
 
         $arClass = new Type();
 
@@ -224,7 +219,7 @@ public function testCastValues(): void
 
     public function testPopulateRecordCallWhenQueryingOnParentClass(): void
     {
-        $this->checkFixture($this->db(), 'cat');
+        $this->reloadFixtureAfterTest();
 
         $cat = new Cat();
         $cat->save();
@@ -243,7 +238,7 @@ public function testPopulateRecordCallWhenQueryingOnParentClass(): void
 
     public function testSaveEmpty(): void
     {
-        $this->checkFixture($this->db(), 'null_values', true);
+        $this->reloadFixtureAfterTest();
 
         $record = new NullValues();
 
@@ -256,7 +251,7 @@ public function testSaveEmpty(): void
      */
     public function testNoTablenameReplacement(): void
     {
-        $this->checkFixture($this->db(), 'customer');
+        $this->reloadFixtureAfterTest();
 
         $customer = new Customer();
 
@@ -279,8 +274,6 @@ public function testNoTablenameReplacement(): void
 
     public function testRefreshQuerySetAliasFindRecord(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customer = new CustomerWithAlias();
 
         $customer->id = 1;
@@ -291,7 +284,7 @@ public function testRefreshQuerySetAliasFindRecord(): void
 
     public function testResetNotSavedRelation(): void
     {
-        $this->checkFixture($this->db(), 'order');
+        $this->reloadFixtureAfterTest();
 
         $order = new Order();
 
@@ -314,8 +307,6 @@ public function testIssetException(): void
     {
         self::markTestSkipped('There are no magic properties in the Cat class');
 
-        $this->checkFixture($this->db(), 'cat');
-
         $cat = new Cat();
 
         $this->expectException(Exception::class);
@@ -326,8 +317,6 @@ public function testIssetThrowable(): void
     {
         self::markTestSkipped('There are no magic properties in the Cat class');
 
-        $this->checkFixture($this->db(), 'cat');
-
         $cat = new Cat();
 
         $this->expectException(DivisionByZeroError::class);
@@ -338,8 +327,6 @@ public function testIssetNonExisting(): void
     {
         self::markTestSkipped('There are no magic properties in the Cat class');
 
-        $this->checkFixture($this->db(), 'cat');
-
         $cat = new Cat();
 
         $this->assertFalse(isset($cat->non_existing));
@@ -348,7 +335,7 @@ public function testIssetNonExisting(): void
 
     public function testSetProperties(): void
     {
-        $this->checkFixture($this->db(), 'customer');
+        $this->reloadFixtureAfterTest();
 
         $properties = [
             'email' => 'samdark@mail.ru',
@@ -371,8 +358,6 @@ public function testSetPropertyNoExist(): void
     {
         self::markTestSkipped('There are no magic properties in the Cat class');
 
-        $this->checkFixture($this->db(), 'cat');
-
         $cat = new Cat();
 
         $this->expectException(InvalidArgumentException::class);
@@ -385,8 +370,6 @@ public function testSetPropertyNoExist(): void
 
     public function testAssignOldValue(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customer = new Customer();
 
         $this->assertEmpty($customer->oldValue('name'));
@@ -398,8 +381,6 @@ public function testAssignOldValue(): void
 
     public function testaAssignOldValueException(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customer = new Customer();
 
         $this->assertEmpty($customer->oldValue('name'));
@@ -413,8 +394,6 @@ public function testaAssignOldValueException(): void
 
     public function testIsPropertyChangedNotChanged(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customer = new Customer();
 
         $this->assertEmpty($customer->get('email'));
@@ -434,7 +413,7 @@ public function testTableSchemaException(): void
 
     public function testInsert(): void
     {
-        $this->checkFixture($this->db(), 'customer');
+        $this->reloadFixtureAfterTest();
 
         $customer = new Customer();
 
@@ -458,7 +437,7 @@ public function testInsert(): void
      */
     public function testBooleanProperty(): void
     {
-        $this->checkFixture($this->db(), 'customer', true);
+        $this->reloadFixtureAfterTest();
 
         $customer = new Customer();
 
@@ -489,8 +468,6 @@ public function testPropertyAccess(): void
     {
         self::markTestSkipped('There are no magic properties in the Cat class');
 
-        $this->checkFixture($this->db(), 'customer');
-
         $arClass = new Customer();
 
         $this->assertTrue($arClass->canSetProperty('name'));
@@ -545,8 +522,6 @@ public function testPropertyAccess(): void
 
     public function testHasProperty(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customer = new Customer();
 
         $this->assertTrue($customer->hasProperty('id'));
@@ -562,8 +537,6 @@ public function testHasProperty(): void
 
     public function testRefresh(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customer = new Customer();
 
         $this->assertFalse($customer->refresh());
@@ -578,8 +551,6 @@ public function testRefresh(): void
 
     public function testEquals(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerA = new Customer();
         $customerB = new Customer();
         $this->assertFalse($customerA->equals($customerB));
@@ -604,8 +575,7 @@ public static function providerForUnlinkDelete(): array
      */
     public function testUnlinkWithViaOnCondition($delete, $count): void
     {
-        $this->checkFixture($this->db(), 'order', true);
-        $this->checkFixture($this->db(), 'order_item_with_null_fk', true);
+        $this->reloadFixtureAfterTest();
 
         $orderQuery = new ActiveQuery(Order::class);
         $order = $orderQuery->findByPk(2);
@@ -630,8 +600,6 @@ public function testUnlinkWithViaOnCondition($delete, $count): void
 
     public function testVirtualRelation(): void
     {
-        $this->checkFixture($this->db(), 'order', true);
-
         $orderQuery = new ActiveQuery(Order::class);
         /** @var Order $order */
         $order = $orderQuery->findByPk(2);
@@ -647,8 +615,6 @@ public function testVirtualRelation(): void
      */
     public function testJoinWithEager(): void
     {
-        $this->checkFixture($this->db(), 'customer', true);
-
         $customerQuery = new ActiveQuery(Customer::class);
         $eagerCustomers = $customerQuery->joinWith(['items2'])->all();
         $eagerItemsCount = 0;
@@ -668,7 +634,7 @@ public function testJoinWithEager(): void
 
     public function testSaveWithoutChanges(): void
     {
-        $this->checkFixture($this->db(), 'customer');
+        $this->reloadFixtureAfterTest();
 
         $customerQuery = new ActiveQuery(Customer::class);
 
@@ -679,8 +645,6 @@ public function testSaveWithoutChanges(): void
 
     public function testGetPrimaryKey(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(Customer::class);
 
         $customer = $customerQuery->findByPk(1);
@@ -691,8 +655,6 @@ public function testGetPrimaryKey(): void
 
     public function testGetOldPrimaryKey(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(Customer::class);
 
         $customer = $customerQuery->findByPk(1);
@@ -704,7 +666,7 @@ public function testGetOldPrimaryKey(): void
 
     public function testGetDirtyValuesOnNewRecord(): void
     {
-        $this->checkFixture($this->db(), 'customer');
+        $this->reloadFixtureAfterTest();
 
         $customer = new Customer();
 
@@ -755,8 +717,6 @@ public function testGetDirtyValuesOnNewRecord(): void
 
     public function testGetDirtyValuesAfterFind(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(Customer::class);
         $customer = $customerQuery->findByPk(1);
 
@@ -778,8 +738,6 @@ public function testGetDirtyValuesAfterFind(): void
 
     public function testRelationWithInstance(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(Customer::class);
         $customer = $customerQuery->findByPk(2);
 
@@ -796,7 +754,7 @@ public function testWithCustomConnection(): void
         $db = $this->createConnection();
 
         ConnectionProvider::set($db, 'custom');
-        $this->checkFixture($db, 'customer');
+        DbHelper::loadFixture($db);
 
         $customer = new CustomerWithCustomConnection();
 
@@ -813,8 +771,6 @@ public function testWithCustomConnection(): void
 
     public function testWithFactory(): void
     {
-        $this->checkFixture($this->db(), 'order');
-
         $factory = $this->createFactory();
 
         $orderQuery = new ActiveQuery($factory->create(OrderWithFactory::class)->withFactory($factory));
@@ -827,8 +783,6 @@ public function testWithFactory(): void
 
     public function testWithFactoryClosureRelation(): void
     {
-        $this->checkFixture($this->db(), 'order');
-
         $factory = $this->createFactory();
 
         $orderQuery = new ActiveQuery($factory->create(OrderWithFactory::class)->withFactory($factory));
@@ -840,8 +794,6 @@ public function testWithFactoryClosureRelation(): void
 
     public function testWithFactoryInstanceRelation(): void
     {
-        $this->checkFixture($this->db(), 'order');
-
         $factory = $this->createFactory();
 
         $orderQuery = new ActiveQuery($factory->create(OrderWithFactory::class)->withFactory($factory));
@@ -853,8 +805,6 @@ public function testWithFactoryInstanceRelation(): void
 
     public function testWithFactoryRelationWithoutFactory(): void
     {
-        $this->checkFixture($this->db(), 'order');
-
         $factory = $this->createFactory();
 
         $orderQuery = new ActiveQuery($factory->create(OrderWithFactory::class)->withFactory($factory));
@@ -866,8 +816,6 @@ public function testWithFactoryRelationWithoutFactory(): void
 
     public function testWithFactoryLazyRelation(): void
     {
-        $this->checkFixture($this->db(), 'order');
-
         $factory = $this->createFactory();
 
         $orderQuery = new ActiveQuery($factory->create(OrderWithFactory::class)->withFactory($factory));
@@ -880,8 +828,6 @@ public function testWithFactoryLazyRelation(): void
 
     public function testWithFactoryWithConstructor(): void
     {
-        $this->checkFixture($this->db(), 'order');
-
         $factory = $this->createFactory();
 
         $customerQuery = new ActiveQuery($factory->create(CustomerWithFactory::class));
@@ -894,8 +840,6 @@ public function testWithFactoryWithConstructor(): void
 
     public function testWithFactoryNonInitiated(): void
     {
-        $this->checkFixture($this->db(), 'order');
-
         $orderQuery = new ActiveQuery(OrderWithFactory::class);
         $order = $orderQuery->findByPk(2);
 
@@ -911,8 +855,6 @@ public function testWithFactoryNonInitiated(): void
 
     public function testSerialization(): void
     {
-        $this->checkFixture($this->db(), 'profile');
-
         $profile = new Profile();
 
         $this->assertEquals(
@@ -935,8 +877,6 @@ public function testRelationViaJson(): void
             $this->markTestSkipped('Oracle and MSSQL drivers do not support JSON columns.');
         }
 
-        $this->checkFixture($this->db(), 'promotion');
-
         $promotionQuery = new ActiveQuery(Promotion::class);
         /** @var Promotion[] $promotions */
         $promotions = $promotionQuery->with('itemsViaJson')->all();
@@ -968,8 +908,6 @@ public function testLazzyRelationViaJson(): void
             $this->markTestSkipped('Oracle and MSSQL drivers do not support JSON columns.');
         }
 
-        $this->checkFixture($this->db(), 'item');
-
         $itemQuery = new ActiveQuery(Item::class);
         /** @var Item[] $items */
         $items = $itemQuery->all();
@@ -989,8 +927,6 @@ public function testLazzyRelationViaJson(): void
 
     public function testIsChanged(): void
     {
-        $this->checkFixture($this->db(), 'item');
-
         $itemQuery = new ActiveQuery(Item::class);
         $item = $itemQuery->findByPk(1);
 
diff --git a/tests/ArrayableTraitTest.php b/tests/ArrayableTraitTest.php
index d4ee51e40..caaed08c4 100644
--- a/tests/ArrayableTraitTest.php
+++ b/tests/ArrayableTraitTest.php
@@ -13,8 +13,6 @@ abstract class ArrayableTraitTest extends TestCase
 {
     public function testFields(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(CustomerForArrayable::class);
 
         $fields = $customerQuery->findOne(['id' => 1])->fields();
@@ -37,8 +35,6 @@ public function testFields(): void
 
     public function testToArray(): void
     {
-        $this->checkFixture($this->db(), 'customer', true);
-
         $customerQuery = new ActiveQuery(Customer::class);
         $customer = $customerQuery->findByPk(1);
 
@@ -58,8 +54,6 @@ public function testToArray(): void
 
     public function testToArrayWithClosure(): void
     {
-        $this->checkFixture($this->db(), 'customer', true);
-
         $customerQuery = new ActiveQuery(CustomerClosureField::class);
         $customer = $customerQuery->findByPk(1);
 
@@ -79,8 +73,6 @@ public function testToArrayWithClosure(): void
 
     public function testToArrayForArrayable(): void
     {
-        $this->checkFixture($this->db(), 'customer', true);
-
         $customerQuery = new ActiveQuery(CustomerForArrayable::class);
 
         /** @var CustomerForArrayable $customer */
diff --git a/tests/BatchQueryResultTest.php b/tests/BatchQueryResultTest.php
index 038cc426f..142f3e2cb 100644
--- a/tests/BatchQueryResultTest.php
+++ b/tests/BatchQueryResultTest.php
@@ -12,8 +12,6 @@ abstract class BatchQueryResultTest extends TestCase
 {
     public function testQuery(): void
     {
-        $this->checkFixture($this->db(), 'customer', true);
-
         $customerQuery = new ActiveQuery(Customer::class);
 
         $query = $customerQuery->orderBy('id');
@@ -116,8 +114,6 @@ public function testQuery(): void
 
     public function testActiveQuery(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         /** batch with eager loading */
         $customerQuery = new ActiveQuery(Customer::class);
 
@@ -137,8 +133,6 @@ public function testActiveQuery(): void
 
     public function testBatchWithIndexBy(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(Customer::class);
 
         $query = $customerQuery->orderBy('id')->limit(3)->indexBy('id');
diff --git a/tests/ConnectionProviderTest.php b/tests/ConnectionProviderTest.php
index e95285cd1..53fc8def0 100644
--- a/tests/ConnectionProviderTest.php
+++ b/tests/ConnectionProviderTest.php
@@ -51,6 +51,8 @@ public function testConnectionProvider(): void
 
     public function testConnectionProviderMiddleware(): void
     {
+        $this->reloadFixtureAfterTest();
+
         ConnectionProvider::remove();
 
         $this->assertEmpty(ConnectionProvider::all());
diff --git a/tests/Driver/Mssql/ActiveQueryFindTest.php b/tests/Driver/Mssql/ActiveQueryFindTest.php
index bb39b9f27..d5968a675 100644
--- a/tests/Driver/Mssql/ActiveQueryFindTest.php
+++ b/tests/Driver/Mssql/ActiveQueryFindTest.php
@@ -9,7 +9,7 @@
 
 final class ActiveQueryFindTest extends \Yiisoft\ActiveRecord\Tests\ActiveQueryFindTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new MssqlHelper())->createConnection();
     }
diff --git a/tests/Driver/Mssql/ActiveQueryTest.php b/tests/Driver/Mssql/ActiveQueryTest.php
index 6abeedf90..8d45e0465 100644
--- a/tests/Driver/Mssql/ActiveQueryTest.php
+++ b/tests/Driver/Mssql/ActiveQueryTest.php
@@ -9,7 +9,7 @@
 
 final class ActiveQueryTest extends \Yiisoft\ActiveRecord\Tests\ActiveQueryTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new MssqlHelper())->createConnection();
     }
diff --git a/tests/Driver/Mssql/ActiveRecordTest.php b/tests/Driver/Mssql/ActiveRecordTest.php
index 225d90751..2fbf49aa9 100644
--- a/tests/Driver/Mssql/ActiveRecordTest.php
+++ b/tests/Driver/Mssql/ActiveRecordTest.php
@@ -13,7 +13,7 @@
 
 final class ActiveRecordTest extends \Yiisoft\ActiveRecord\Tests\ActiveRecordTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new MssqlHelper())->createConnection();
     }
@@ -25,7 +25,7 @@ protected function createFactory(): Factory
 
     public function testSaveWithTrigger(): void
     {
-        $this->checkFixture($this->db(), 'test_trigger');
+        $this->reloadFixtureAfterTest();
 
         // drop trigger if exist
         $sql = <<<SQL
diff --git a/tests/Driver/Mssql/ArrayableTraitTest.php b/tests/Driver/Mssql/ArrayableTraitTest.php
index 25e818779..eb271f973 100644
--- a/tests/Driver/Mssql/ArrayableTraitTest.php
+++ b/tests/Driver/Mssql/ArrayableTraitTest.php
@@ -9,7 +9,7 @@
 
 final class ArrayableTraitTest extends \Yiisoft\ActiveRecord\Tests\ArrayableTraitTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new MssqlHelper())->createConnection();
     }
diff --git a/tests/Driver/Mssql/BatchQueryResultTest.php b/tests/Driver/Mssql/BatchQueryResultTest.php
index c534f0cb3..a4bcbdfa3 100644
--- a/tests/Driver/Mssql/BatchQueryResultTest.php
+++ b/tests/Driver/Mssql/BatchQueryResultTest.php
@@ -9,7 +9,7 @@
 
 final class BatchQueryResultTest extends \Yiisoft\ActiveRecord\Tests\BatchQueryResultTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new MssqlHelper())->createConnection();
     }
diff --git a/tests/Driver/Mssql/ConnectionProviderTest.php b/tests/Driver/Mssql/ConnectionProviderTest.php
index 3664548f3..e861d6e99 100644
--- a/tests/Driver/Mssql/ConnectionProviderTest.php
+++ b/tests/Driver/Mssql/ConnectionProviderTest.php
@@ -9,7 +9,7 @@
 
 final class ConnectionProviderTest extends \Yiisoft\ActiveRecord\Tests\ConnectionProviderTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new MssqlHelper())->createConnection();
     }
diff --git a/tests/Driver/Mssql/MagicActiveRecordTest.php b/tests/Driver/Mssql/MagicActiveRecordTest.php
index 99b671144..7170850b2 100644
--- a/tests/Driver/Mssql/MagicActiveRecordTest.php
+++ b/tests/Driver/Mssql/MagicActiveRecordTest.php
@@ -12,14 +12,14 @@
 
 final class MagicActiveRecordTest extends \Yiisoft\ActiveRecord\Tests\MagicActiveRecordTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new MssqlHelper())->createConnection();
     }
 
     public function testSaveWithTrigger(): void
     {
-        $this->checkFixture($this->db(), 'test_trigger');
+        $this->reloadFixtureAfterTest();
 
         // drop trigger if exist
         $sql = <<<SQL
diff --git a/tests/Driver/Mssql/RepositoryTraitTest.php b/tests/Driver/Mssql/RepositoryTraitTest.php
index 23fc4dd52..2a7f5b159 100644
--- a/tests/Driver/Mssql/RepositoryTraitTest.php
+++ b/tests/Driver/Mssql/RepositoryTraitTest.php
@@ -9,7 +9,7 @@
 
 final class RepositoryTraitTest extends \Yiisoft\ActiveRecord\Tests\RepositoryTraitTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new MssqlHelper())->createConnection();
     }
diff --git a/tests/Driver/Mysql/ActiveQueryFindTest.php b/tests/Driver/Mysql/ActiveQueryFindTest.php
index 87f111442..0316c6e36 100644
--- a/tests/Driver/Mysql/ActiveQueryFindTest.php
+++ b/tests/Driver/Mysql/ActiveQueryFindTest.php
@@ -9,7 +9,7 @@
 
 final class ActiveQueryFindTest extends \Yiisoft\ActiveRecord\Tests\ActiveQueryFindTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new MysqlHelper())->createConnection();
     }
diff --git a/tests/Driver/Mysql/ActiveQueryTest.php b/tests/Driver/Mysql/ActiveQueryTest.php
index be875d749..414f62792 100644
--- a/tests/Driver/Mysql/ActiveQueryTest.php
+++ b/tests/Driver/Mysql/ActiveQueryTest.php
@@ -9,7 +9,7 @@
 
 final class ActiveQueryTest extends \Yiisoft\ActiveRecord\Tests\ActiveQueryTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new MysqlHelper())->createConnection();
     }
diff --git a/tests/Driver/Mysql/ActiveRecordTest.php b/tests/Driver/Mysql/ActiveRecordTest.php
index 0147aa732..890b7b493 100644
--- a/tests/Driver/Mysql/ActiveRecordTest.php
+++ b/tests/Driver/Mysql/ActiveRecordTest.php
@@ -14,7 +14,7 @@
 
 final class ActiveRecordTest extends \Yiisoft\ActiveRecord\Tests\ActiveRecordTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new MysqlHelper())->createConnection();
     }
@@ -26,12 +26,10 @@ protected function createFactory(): Factory
 
     public function testCastValues(): void
     {
-        $this->checkFixture($this->db(), 'type');
+        $this->reloadFixtureAfterTest();
 
         $arClass = new Type();
 
-        $arClass->deleteAll();
-
         $arClass->int_col = 123;
         $arClass->int_col2 = 456;
         $arClass->smallint_col = 42;
@@ -67,7 +65,7 @@ public function testCastValues(): void
 
     public function testExplicitPkOnAutoIncrement(): void
     {
-        $this->checkFixture($this->db(), 'customer');
+        $this->reloadFixtureAfterTest();
 
         $customer = new Customer();
 
@@ -89,8 +87,6 @@ public function testExplicitPkOnAutoIncrement(): void
      */
     public function testEagerLoadingUsingStringIdentifiers(): void
     {
-        $this->checkFixture($this->db(), 'beta');
-
         $betaQuery = new ActiveQuery(Beta::class);
 
         $betas = $betaQuery->with('alpha')->all();
diff --git a/tests/Driver/Mysql/ArrayableTraitTest.php b/tests/Driver/Mysql/ArrayableTraitTest.php
index 0ae1a1d99..346861079 100644
--- a/tests/Driver/Mysql/ArrayableTraitTest.php
+++ b/tests/Driver/Mysql/ArrayableTraitTest.php
@@ -9,7 +9,7 @@
 
 final class ArrayableTraitTest extends \Yiisoft\ActiveRecord\Tests\ArrayableTraitTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new MysqlHelper())->createConnection();
     }
diff --git a/tests/Driver/Mysql/BatchQueryResultTest.php b/tests/Driver/Mysql/BatchQueryResultTest.php
index b3d3e3d00..4b2a04d3e 100644
--- a/tests/Driver/Mysql/BatchQueryResultTest.php
+++ b/tests/Driver/Mysql/BatchQueryResultTest.php
@@ -9,7 +9,7 @@
 
 final class BatchQueryResultTest extends \Yiisoft\ActiveRecord\Tests\BatchQueryResultTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new MysqlHelper())->createConnection();
     }
diff --git a/tests/Driver/Mysql/ConnectionProviderTest.php b/tests/Driver/Mysql/ConnectionProviderTest.php
index aaf56a3b2..2c9a8f92c 100644
--- a/tests/Driver/Mysql/ConnectionProviderTest.php
+++ b/tests/Driver/Mysql/ConnectionProviderTest.php
@@ -9,7 +9,7 @@
 
 final class ConnectionProviderTest extends \Yiisoft\ActiveRecord\Tests\ConnectionProviderTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new MysqlHelper())->createConnection();
     }
diff --git a/tests/Driver/Mysql/MagicActiveRecordTest.php b/tests/Driver/Mysql/MagicActiveRecordTest.php
index f63839acb..61ba83d00 100644
--- a/tests/Driver/Mysql/MagicActiveRecordTest.php
+++ b/tests/Driver/Mysql/MagicActiveRecordTest.php
@@ -12,14 +12,14 @@
 
 final class MagicActiveRecordTest extends \Yiisoft\ActiveRecord\Tests\MagicActiveRecordTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new MysqlHelper())->createConnection();
     }
 
     public function testExplicitPkOnAutoIncrement(): void
     {
-        $this->checkFixture($this->db(), 'customer');
+        $this->reloadFixtureAfterTest();
 
         $customer = new Customer();
 
@@ -41,8 +41,6 @@ public function testExplicitPkOnAutoIncrement(): void
      */
     public function testEagerLoadingUsingStringIdentifiers(): void
     {
-        $this->checkFixture($this->db(), 'beta');
-
         $betaQuery = new ActiveQuery(Beta::class);
 
         $betas = $betaQuery->with('alpha')->all();
diff --git a/tests/Driver/Mysql/RepositoryTraitTest.php b/tests/Driver/Mysql/RepositoryTraitTest.php
index e6c9518fc..c47449e67 100644
--- a/tests/Driver/Mysql/RepositoryTraitTest.php
+++ b/tests/Driver/Mysql/RepositoryTraitTest.php
@@ -9,7 +9,7 @@
 
 final class RepositoryTraitTest extends \Yiisoft\ActiveRecord\Tests\RepositoryTraitTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new MysqlHelper())->createConnection();
     }
diff --git a/tests/Driver/Oracle/ActiveQueryFindTest.php b/tests/Driver/Oracle/ActiveQueryFindTest.php
index ff89f2501..60d98d10f 100644
--- a/tests/Driver/Oracle/ActiveQueryFindTest.php
+++ b/tests/Driver/Oracle/ActiveQueryFindTest.php
@@ -11,15 +11,13 @@
 
 final class ActiveQueryFindTest extends \Yiisoft\ActiveRecord\Tests\ActiveQueryFindTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new OracleHelper())->createConnection();
     }
 
     public function testFindLimit(): void
     {
-        $this->checkFixture($this->db(), 'customer', true);
-
         /** one */
         $customerQuery = new ActiveQuery(CustomerWithRownumid::class);
         $customer = $customerQuery->orderBy('id')->one();
diff --git a/tests/Driver/Oracle/ActiveQueryTest.php b/tests/Driver/Oracle/ActiveQueryTest.php
index ce2d9415c..82aa7fa07 100644
--- a/tests/Driver/Oracle/ActiveQueryTest.php
+++ b/tests/Driver/Oracle/ActiveQueryTest.php
@@ -14,7 +14,7 @@
 
 final class ActiveQueryTest extends \Yiisoft\ActiveRecord\Tests\ActiveQueryTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new OracleHelper())->createConnection();
     }
@@ -33,8 +33,6 @@ protected function createConnection(): ConnectionInterface
     public function testJoinWithAlias(string $aliasMethod): void
     {
         $orders = [];
-        $this->checkFixture($this->db(), 'order', true);
-
         /** left join and eager loading */
         $orderQuery = new ActiveQuery(Order::class);
         $query = $orderQuery->joinWith(['customer c']);
@@ -270,8 +268,6 @@ public function testJoinWithAlias(string $aliasMethod): void
      */
     public function testJoinWithSameTable(): void
     {
-        $this->checkFixture($this->db(), 'order');
-
         /**
          * join with the same table but different aliases alias is defined in the relation definition without eager
          * loading
diff --git a/tests/Driver/Oracle/ActiveRecordTest.php b/tests/Driver/Oracle/ActiveRecordTest.php
index 12c125cfe..2fb2ef618 100644
--- a/tests/Driver/Oracle/ActiveRecordTest.php
+++ b/tests/Driver/Oracle/ActiveRecordTest.php
@@ -13,7 +13,7 @@
 
 final class ActiveRecordTest extends \Yiisoft\ActiveRecord\Tests\ActiveRecordTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new OracleHelper())->createConnection();
     }
@@ -25,8 +25,6 @@ protected function createFactory(): Factory
 
     public function testDefaultValues(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $arClass = new Type();
         $arClass->loadDefaultValues();
         $this->assertSame(1, $arClass->int_col2);
@@ -57,7 +55,7 @@ public function testDefaultValues(): void
      */
     public function testBooleanProperty(): void
     {
-        $this->checkFixture($this->db(), 'customer', true);
+        $this->reloadFixtureAfterTest();
 
         $customer = new Customer();
 
diff --git a/tests/Driver/Oracle/ArrayableTraitTest.php b/tests/Driver/Oracle/ArrayableTraitTest.php
index 0d209c1f1..f6e6c1031 100644
--- a/tests/Driver/Oracle/ArrayableTraitTest.php
+++ b/tests/Driver/Oracle/ArrayableTraitTest.php
@@ -9,7 +9,7 @@
 
 final class ArrayableTraitTest extends \Yiisoft\ActiveRecord\Tests\ArrayableTraitTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new OracleHelper())->createConnection();
     }
diff --git a/tests/Driver/Oracle/BatchQueryResultTest.php b/tests/Driver/Oracle/BatchQueryResultTest.php
index c04d4afbf..46ef7eb7c 100644
--- a/tests/Driver/Oracle/BatchQueryResultTest.php
+++ b/tests/Driver/Oracle/BatchQueryResultTest.php
@@ -11,15 +11,13 @@
 
 final class BatchQueryResultTest extends \Yiisoft\ActiveRecord\Tests\BatchQueryResultTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new OracleHelper())->createConnection();
     }
 
     public function testBatchWithIndexBy(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(Customer::class);
 
         $query = $customerQuery->orderBy('id')->limit(3)->indexBy('id');
diff --git a/tests/Driver/Oracle/ConnectionProviderTest.php b/tests/Driver/Oracle/ConnectionProviderTest.php
index 2f3713237..7f222e29d 100644
--- a/tests/Driver/Oracle/ConnectionProviderTest.php
+++ b/tests/Driver/Oracle/ConnectionProviderTest.php
@@ -9,7 +9,7 @@
 
 final class ConnectionProviderTest extends \Yiisoft\ActiveRecord\Tests\ConnectionProviderTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new OracleHelper())->createConnection();
     }
diff --git a/tests/Driver/Oracle/MagicActiveRecordTest.php b/tests/Driver/Oracle/MagicActiveRecordTest.php
index 0b09e8885..bcd3466d9 100644
--- a/tests/Driver/Oracle/MagicActiveRecordTest.php
+++ b/tests/Driver/Oracle/MagicActiveRecordTest.php
@@ -12,15 +12,13 @@
 
 final class MagicActiveRecordTest extends \Yiisoft\ActiveRecord\Tests\MagicActiveRecordTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new OracleHelper())->createConnection();
     }
 
     public function testDefaultValues(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $arClass = new Type();
         $arClass->loadDefaultValues();
         $this->assertSame(1, $arClass->int_col2);
@@ -51,7 +49,7 @@ public function testDefaultValues(): void
      */
     public function testBooleanProperty(): void
     {
-        $this->checkFixture($this->db(), 'customer', true);
+        $this->reloadFixtureAfterTest();
 
         $customer = new Customer();
 
diff --git a/tests/Driver/Oracle/RepositoryTraitTest.php b/tests/Driver/Oracle/RepositoryTraitTest.php
index ddbd6bd4a..ff7f5ca96 100644
--- a/tests/Driver/Oracle/RepositoryTraitTest.php
+++ b/tests/Driver/Oracle/RepositoryTraitTest.php
@@ -9,7 +9,7 @@
 
 final class RepositoryTraitTest extends \Yiisoft\ActiveRecord\Tests\RepositoryTraitTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new OracleHelper())->createConnection();
     }
diff --git a/tests/Driver/Pgsql/ActiveQueryFindTest.php b/tests/Driver/Pgsql/ActiveQueryFindTest.php
index 56be97535..0ba56a759 100644
--- a/tests/Driver/Pgsql/ActiveQueryFindTest.php
+++ b/tests/Driver/Pgsql/ActiveQueryFindTest.php
@@ -9,7 +9,7 @@
 
 final class ActiveQueryFindTest extends \Yiisoft\ActiveRecord\Tests\ActiveQueryFindTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new PgsqlHelper())->createConnection();
     }
diff --git a/tests/Driver/Pgsql/ActiveQueryTest.php b/tests/Driver/Pgsql/ActiveQueryTest.php
index 3aa6a1935..f9424746a 100644
--- a/tests/Driver/Pgsql/ActiveQueryTest.php
+++ b/tests/Driver/Pgsql/ActiveQueryTest.php
@@ -11,15 +11,13 @@
 
 final class ActiveQueryTest extends \Yiisoft\ActiveRecord\Tests\ActiveQueryTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new PgsqlHelper())->createConnection();
     }
 
     public function testBit(): void
     {
-        $this->checkFixture($this->db(), 'bit_values');
-
         $bitValueQuery = new ActiveQuery(BitValues::class);
         $falseBit = $bitValueQuery->findByPk(1);
         $this->assertSame(0, $falseBit->val);
diff --git a/tests/Driver/Pgsql/ActiveRecordTest.php b/tests/Driver/Pgsql/ActiveRecordTest.php
index 473cb495d..8fd4a55f0 100644
--- a/tests/Driver/Pgsql/ActiveRecordTest.php
+++ b/tests/Driver/Pgsql/ActiveRecordTest.php
@@ -25,7 +25,7 @@
 
 final class ActiveRecordTest extends \Yiisoft\ActiveRecord\Tests\ActiveRecordTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new PgsqlHelper())->createConnection();
     }
@@ -37,8 +37,6 @@ protected function createFactory(): Factory
 
     public function testDefaultValues(): void
     {
-        $this->checkFixture($this->db(), 'type');
-
         $arClass = new Type();
 
         $arClass->loadDefaultValues();
@@ -66,7 +64,7 @@ public function testDefaultValues(): void
 
     public function testCastValues(): void
     {
-        $this->checkFixture($this->db(), 'type');
+        $this->reloadFixtureAfterTest();
 
         $arClass = new Type();
 
@@ -103,7 +101,7 @@ public function testCastValues(): void
 
     public function testExplicitPkOnAutoIncrement(): void
     {
-        $this->checkFixture($this->db(), 'customer');
+        $this->reloadFixtureAfterTest();
 
         $customer = new Customer();
         $customer->setId(1337);
@@ -122,8 +120,6 @@ public function testExplicitPkOnAutoIncrement(): void
      */
     public function testEagerLoadingUsingStringIdentifiers(): void
     {
-        $this->checkFixture($this->db(), 'beta');
-
         $betaQuery = new ActiveQuery(Beta::class);
         $betas = $betaQuery->with('alpha')->all();
         $this->assertNotEmpty($betas);
@@ -142,8 +138,6 @@ public function testEagerLoadingUsingStringIdentifiers(): void
 
     public function testBooleanValues(): void
     {
-        $this->checkFixture($this->db(), 'bool_values');
-
         $command = $this->db()->createCommand();
         $command->insertBatch('bool_values', [[true], [false]], ['bool_col'])->execute();
         $boolARQuery = new ActiveQuery(BoolAR::class);
@@ -168,7 +162,7 @@ public function testBooleanValues(): void
      */
     public function testBooleanValues2(): void
     {
-        $this->checkFixture($this->db(), 'bool_user');
+        $this->reloadFixtureAfterTest();
 
         //$this->db()->setCharset('utf8');
         $this->db()->createCommand('DROP TABLE IF EXISTS bool_user;')->execute();
@@ -207,7 +201,7 @@ public function testBooleanValues2(): void
 
     public function testBooleanDefaultValues(): void
     {
-        $this->checkFixture($this->db(), 'bool_values');
+        $this->reloadFixtureAfterTest();
 
         $arClass = new BoolAR();
 
@@ -225,7 +219,7 @@ public function testBooleanDefaultValues(): void
 
     public function testPrimaryKeyAfterSave(): void
     {
-        $this->checkFixture($this->db(), 'default_pk');
+        $this->reloadFixtureAfterTest();
 
         $record = new DefaultPk();
 
@@ -311,7 +305,7 @@ public static function arrayValuesProvider(): array
      */
     public function testArrayValues($properties): void
     {
-        $this->checkFixture($this->db(), 'array_and_json_types', true);
+        $this->reloadFixtureAfterTest();
 
         $type = new ArrayAndJsonTypes();
 
@@ -346,8 +340,6 @@ public function testArrayValues($properties): void
 
     public function testRelationViaArray(): void
     {
-        $this->checkFixture($this->db(), 'promotion');
-
         $promotionQuery = new ActiveQuery(Promotion::class);
         /** @var Promotion[] $promotions */
         $promotions = $promotionQuery->with('itemsViaArray')->all();
@@ -375,8 +367,6 @@ public function testRelationViaArray(): void
 
     public function testLazzyRelationViaArray(): void
     {
-        $this->checkFixture($this->db(), 'item');
-
         $itemQuery = new ActiveQuery(Item::class);
         /** @var Item[] $items */
         $items = $itemQuery->all();
diff --git a/tests/Driver/Pgsql/ArrayableTraitTest.php b/tests/Driver/Pgsql/ArrayableTraitTest.php
index b2ebfbde2..b377412da 100644
--- a/tests/Driver/Pgsql/ArrayableTraitTest.php
+++ b/tests/Driver/Pgsql/ArrayableTraitTest.php
@@ -9,7 +9,7 @@
 
 final class ArrayableTraitTest extends \Yiisoft\ActiveRecord\Tests\ArrayableTraitTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new PgsqlHelper())->createConnection();
     }
diff --git a/tests/Driver/Pgsql/BatchQueryResultTest.php b/tests/Driver/Pgsql/BatchQueryResultTest.php
index 2af09578f..7837f2391 100644
--- a/tests/Driver/Pgsql/BatchQueryResultTest.php
+++ b/tests/Driver/Pgsql/BatchQueryResultTest.php
@@ -9,7 +9,7 @@
 
 final class BatchQueryResultTest extends \Yiisoft\ActiveRecord\Tests\BatchQueryResultTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new PgsqlHelper())->createConnection();
     }
diff --git a/tests/Driver/Pgsql/ConnectionProviderTest.php b/tests/Driver/Pgsql/ConnectionProviderTest.php
index 84b67503c..311a0f56d 100644
--- a/tests/Driver/Pgsql/ConnectionProviderTest.php
+++ b/tests/Driver/Pgsql/ConnectionProviderTest.php
@@ -9,7 +9,7 @@
 
 final class ConnectionProviderTest extends \Yiisoft\ActiveRecord\Tests\ConnectionProviderTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new PgsqlHelper())->createConnection();
     }
diff --git a/tests/Driver/Pgsql/MagicActiveRecordTest.php b/tests/Driver/Pgsql/MagicActiveRecordTest.php
index 90e3ac3f9..e1e20deb6 100644
--- a/tests/Driver/Pgsql/MagicActiveRecordTest.php
+++ b/tests/Driver/Pgsql/MagicActiveRecordTest.php
@@ -20,14 +20,14 @@
 
 final class MagicActiveRecordTest extends \Yiisoft\ActiveRecord\Tests\MagicActiveRecordTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new PgsqlHelper())->createConnection();
     }
 
     public function testExplicitPkOnAutoIncrement(): void
     {
-        $this->checkFixture($this->db(), 'customer');
+        $this->reloadFixtureAfterTest();
 
         $customer = new Customer();
         $customer->id = 1337;
@@ -46,8 +46,6 @@ public function testExplicitPkOnAutoIncrement(): void
      */
     public function testEagerLoadingUsingStringIdentifiers(): void
     {
-        $this->checkFixture($this->db(), 'beta');
-
         $betaQuery = new ActiveQuery(Beta::class);
         $betas = $betaQuery->with('alpha')->all();
         $this->assertNotEmpty($betas);
@@ -66,7 +64,7 @@ public function testEagerLoadingUsingStringIdentifiers(): void
 
     public function testBooleanProperty(): void
     {
-        $this->checkFixture($this->db(), 'customer', true);
+        $this->reloadFixtureAfterTest();
 
         $customer = new Customer();
         $customer->name = 'boolean customer';
@@ -93,8 +91,6 @@ public function testBooleanProperty(): void
 
     public function testBooleanValues(): void
     {
-        $this->checkFixture($this->db(), 'bool_values');
-
         $command = $this->db()->createCommand();
         $command->batchInsert('bool_values', ['bool_col'], [[true], [false]])->execute();
         $boolARQuery = new ActiveQuery(BoolAR::class);
@@ -119,7 +115,7 @@ public function testBooleanValues(): void
      */
     public function testBooleanValues2(): void
     {
-        $this->checkFixture($this->db(), 'bool_user');
+        $this->reloadFixtureAfterTest();
 
         //$this->db()->setCharset('utf8');
         $this->db()->createCommand('DROP TABLE IF EXISTS bool_user;')->execute();
@@ -158,8 +154,6 @@ public function testBooleanValues2(): void
 
     public function testBooleanDefaultValues(): void
     {
-        $this->checkFixture($this->db(), 'bool_values');
-
         $arClass = new BoolAR();
 
         $this->assertNull($arClass->bool_col);
@@ -176,7 +170,7 @@ public function testBooleanDefaultValues(): void
 
     public function testPrimaryKeyAfterSave(): void
     {
-        $this->checkFixture($this->db(), 'default_pk');
+        $this->reloadFixtureAfterTest();
 
         $record = new DefaultPk();
 
@@ -262,7 +256,7 @@ public static function arrayValuesProvider(): array
      */
     public function testArrayValues($properties): void
     {
-        $this->checkFixture($this->db(), 'array_and_json_types', true);
+        $this->reloadFixtureAfterTest();
 
         $type = new ArrayAndJsonTypes();
 
diff --git a/tests/Driver/Pgsql/RepositoryTraitTest.php b/tests/Driver/Pgsql/RepositoryTraitTest.php
index b06e7f75f..8a4a90477 100644
--- a/tests/Driver/Pgsql/RepositoryTraitTest.php
+++ b/tests/Driver/Pgsql/RepositoryTraitTest.php
@@ -9,7 +9,7 @@
 
 final class RepositoryTraitTest extends \Yiisoft\ActiveRecord\Tests\RepositoryTraitTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new PgsqlHelper())->createConnection();
     }
diff --git a/tests/Driver/Sqlite/ActiveQueryFindTest.php b/tests/Driver/Sqlite/ActiveQueryFindTest.php
index 9a3c68215..42f68bf71 100644
--- a/tests/Driver/Sqlite/ActiveQueryFindTest.php
+++ b/tests/Driver/Sqlite/ActiveQueryFindTest.php
@@ -9,7 +9,7 @@
 
 final class ActiveQueryFindTest extends \Yiisoft\ActiveRecord\Tests\ActiveQueryFindTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new SqliteHelper())->createConnection();
     }
diff --git a/tests/Driver/Sqlite/ActiveQueryTest.php b/tests/Driver/Sqlite/ActiveQueryTest.php
index 651b55946..39d12951a 100644
--- a/tests/Driver/Sqlite/ActiveQueryTest.php
+++ b/tests/Driver/Sqlite/ActiveQueryTest.php
@@ -9,7 +9,7 @@
 
 final class ActiveQueryTest extends \Yiisoft\ActiveRecord\Tests\ActiveQueryTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new SqliteHelper())->createConnection();
     }
diff --git a/tests/Driver/Sqlite/ActiveRecordTest.php b/tests/Driver/Sqlite/ActiveRecordTest.php
index d47fc396a..59200b6e7 100644
--- a/tests/Driver/Sqlite/ActiveRecordTest.php
+++ b/tests/Driver/Sqlite/ActiveRecordTest.php
@@ -13,7 +13,7 @@
 
 final class ActiveRecordTest extends \Yiisoft\ActiveRecord\Tests\ActiveRecordTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new SqliteHelper())->createConnection();
     }
@@ -25,7 +25,7 @@ protected function createFactory(): Factory
 
     public function testExplicitPkOnAutoIncrement(): void
     {
-        $this->checkFixture($this->db(), 'customer', true);
+        $this->reloadFixtureAfterTest();
 
         $customer = new Customer();
 
@@ -46,8 +46,6 @@ public function testExplicitPkOnAutoIncrement(): void
      */
     public function testEagerLoadingUsingStringIdentifiers(): void
     {
-        $this->checkFixture($this->db(), 'beta');
-
         $betaQuery = new ActiveQuery(Beta::class);
 
         $betas = $betaQuery->with('alpha')->all();
diff --git a/tests/Driver/Sqlite/ArrayableTraitTest.php b/tests/Driver/Sqlite/ArrayableTraitTest.php
index 8f02e00a9..2f3fd25d1 100644
--- a/tests/Driver/Sqlite/ArrayableTraitTest.php
+++ b/tests/Driver/Sqlite/ArrayableTraitTest.php
@@ -9,7 +9,7 @@
 
 final class ArrayableTraitTest extends \Yiisoft\ActiveRecord\Tests\ArrayableTraitTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new SqliteHelper())->createConnection();
     }
diff --git a/tests/Driver/Sqlite/BatchQueryResultTest.php b/tests/Driver/Sqlite/BatchQueryResultTest.php
index b28642dfa..e4019ba61 100644
--- a/tests/Driver/Sqlite/BatchQueryResultTest.php
+++ b/tests/Driver/Sqlite/BatchQueryResultTest.php
@@ -9,7 +9,7 @@
 
 final class BatchQueryResultTest extends \Yiisoft\ActiveRecord\Tests\BatchQueryResultTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new SqliteHelper())->createConnection();
     }
diff --git a/tests/Driver/Sqlite/ConnectionProviderTest.php b/tests/Driver/Sqlite/ConnectionProviderTest.php
index 9803721cb..d950798c7 100644
--- a/tests/Driver/Sqlite/ConnectionProviderTest.php
+++ b/tests/Driver/Sqlite/ConnectionProviderTest.php
@@ -9,7 +9,7 @@
 
 final class ConnectionProviderTest extends \Yiisoft\ActiveRecord\Tests\ConnectionProviderTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new SqliteHelper())->createConnection();
     }
diff --git a/tests/Driver/Sqlite/MagicActiveRecordTest.php b/tests/Driver/Sqlite/MagicActiveRecordTest.php
index a198cda0c..34e3e3c4c 100644
--- a/tests/Driver/Sqlite/MagicActiveRecordTest.php
+++ b/tests/Driver/Sqlite/MagicActiveRecordTest.php
@@ -12,14 +12,14 @@
 
 final class MagicActiveRecordTest extends \Yiisoft\ActiveRecord\Tests\MagicActiveRecordTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new SqliteHelper())->createConnection();
     }
 
     public function testExplicitPkOnAutoIncrement(): void
     {
-        $this->checkFixture($this->db(), 'customer', true);
+        $this->reloadFixtureAfterTest();
 
         $customer = new Customer();
 
@@ -40,8 +40,6 @@ public function testExplicitPkOnAutoIncrement(): void
      */
     public function testEagerLoadingUsingStringIdentifiers(): void
     {
-        $this->checkFixture($this->db(), 'beta');
-
         $betaQuery = new ActiveQuery(Beta::class);
 
         $betas = $betaQuery->with('alpha')->all();
diff --git a/tests/Driver/Sqlite/RepositoryTraitTest.php b/tests/Driver/Sqlite/RepositoryTraitTest.php
index 63285edd1..fff41cd24 100644
--- a/tests/Driver/Sqlite/RepositoryTraitTest.php
+++ b/tests/Driver/Sqlite/RepositoryTraitTest.php
@@ -9,7 +9,7 @@
 
 final class RepositoryTraitTest extends \Yiisoft\ActiveRecord\Tests\RepositoryTraitTest
 {
-    protected function createConnection(): ConnectionInterface
+    protected static function createConnection(): ConnectionInterface
     {
         return (new SqliteHelper())->createConnection();
     }
diff --git a/tests/MagicActiveRecordTest.php b/tests/MagicActiveRecordTest.php
index 96550a728..55a82dfef 100644
--- a/tests/MagicActiveRecordTest.php
+++ b/tests/MagicActiveRecordTest.php
@@ -32,7 +32,7 @@ abstract class MagicActiveRecordTest extends TestCase
 {
     public function testStoreNull(): void
     {
-        $this->checkFixture($this->db(), 'null_values', true);
+        $this->reloadFixtureAfterTest();
 
         $record = new NullValues();
 
@@ -80,7 +80,7 @@ public function testStoreNull(): void
 
     public function testStoreEmpty(): void
     {
-        $this->checkFixture($this->db(), 'null_values');
+        $this->reloadFixtureAfterTest();
 
         $record = new NullValues();
 
@@ -100,8 +100,6 @@ public function testStoreEmpty(): void
 
     public function testIsPrimaryKey(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customer = new Customer();
         $orderItem = new OrderItem();
 
@@ -122,8 +120,6 @@ public function testIsPrimaryKey(): void
 
     public function testOutdatedRelationsAreResetForNewRecords(): void
     {
-        $this->checkFixture($this->db(), 'order_item');
-
         $orderItem = new OrderItem();
 
         $orderItem->order_id = 1;
@@ -146,8 +142,6 @@ public function testOutdatedRelationsAreResetForNewRecords(): void
 
     public function testDefaultValues(): void
     {
-        $this->checkFixture($this->db(), 'type');
-
         $arClass = new Type();
 
         $arClass->loadDefaultValues();
@@ -178,12 +172,10 @@ public function testDefaultValues(): void
 
     public function testCastValues(): void
     {
-        $this->checkFixture($this->db(), 'type');
+        $this->reloadFixtureAfterTest();
 
         $arClass = new Type();
 
-        $arClass->deleteAll();
-
         $arClass->int_col = 123;
         $arClass->int_col2 = 456;
         $arClass->smallint_col = 42;
@@ -217,7 +209,7 @@ public function testCastValues(): void
 
     public function testPopulateRecordCallWhenQueryingOnParentClass(): void
     {
-        $this->checkFixture($this->db(), 'cat');
+        $this->reloadFixtureAfterTest();
 
         $cat = new Cat();
         $cat->save();
@@ -236,7 +228,7 @@ public function testPopulateRecordCallWhenQueryingOnParentClass(): void
 
     public function testSaveEmpty(): void
     {
-        $this->checkFixture($this->db(), 'null_values', true);
+        $this->reloadFixtureAfterTest();
 
         $record = new NullValues();
 
@@ -249,7 +241,7 @@ public function testSaveEmpty(): void
      */
     public function testNoTablenameReplacement(): void
     {
-        $this->checkFixture($this->db(), 'customer');
+        $this->reloadFixtureAfterTest();
 
         $customer = new Customer();
 
@@ -272,8 +264,6 @@ public function testNoTablenameReplacement(): void
 
     public function testRefreshQuerySetAliasFindRecord(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customer = new CustomerWithAlias();
 
         $customer->id = 1;
@@ -284,7 +274,7 @@ public function testRefreshQuerySetAliasFindRecord(): void
 
     public function testResetNotSavedRelation(): void
     {
-        $this->checkFixture($this->db(), 'order');
+        $this->reloadFixtureAfterTest();
 
         $order = new Order();
 
@@ -305,8 +295,6 @@ public function testResetNotSavedRelation(): void
 
     public function testIssetException(): void
     {
-        $this->checkFixture($this->db(), 'cat');
-
         $cat = new Cat();
 
         $this->expectException(Exception::class);
@@ -315,8 +303,6 @@ public function testIssetException(): void
 
     public function testIssetThrowable(): void
     {
-        $this->checkFixture($this->db(), 'cat');
-
         $cat = new Cat();
 
         $this->expectException(DivisionByZeroError::class);
@@ -325,8 +311,6 @@ public function testIssetThrowable(): void
 
     public function testIssetNonExisting(): void
     {
-        $this->checkFixture($this->db(), 'cat');
-
         $cat = new Cat();
 
         $this->assertFalse(isset($cat->non_existing));
@@ -335,7 +319,7 @@ public function testIssetNonExisting(): void
 
     public function testAssignProperties(): void
     {
-        $this->checkFixture($this->db(), 'customer');
+        $this->reloadFixtureAfterTest();
 
         $properties = [
             'email' => 'samdark@mail.ru',
@@ -359,8 +343,6 @@ public function testAssignProperties(): void
 
     public function testSetNoExistProperty(): void
     {
-        $this->checkFixture($this->db(), 'cat');
-
         $cat = new Cat();
 
         $this->expectException(InvalidArgumentException::class);
@@ -373,8 +355,6 @@ public function testSetNoExistProperty(): void
 
     public function testAssignOldValue(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customer = new Customer();
 
         $this->assertEmpty($customer->oldValue('name'));
@@ -386,8 +366,6 @@ public function testAssignOldValue(): void
 
     public function testAssignOldValueException(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customer = new Customer();
 
         $this->assertEmpty($customer->oldValue('name'));
@@ -401,8 +379,6 @@ public function testAssignOldValueException(): void
 
     public function testIsPropertyChangedNotChanged(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customer = new Customer();
 
         $this->assertEmpty($customer->get('name'));
@@ -422,7 +398,7 @@ public function testTableSchemaException(): void
 
     public function testInsert(): void
     {
-        $this->checkFixture($this->db(), 'customer');
+        $this->reloadFixtureAfterTest();
 
         $customer = new Customer();
 
@@ -446,7 +422,7 @@ public function testInsert(): void
      */
     public function testBooleanProperty(): void
     {
-        $this->checkFixture($this->db(), 'customer', true);
+        $this->reloadFixtureAfterTest();
 
         $customer = new Customer();
 
@@ -475,8 +451,6 @@ public function testBooleanProperty(): void
 
     public function testPropertyAccess(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $arClass = new Customer();
 
         $this->assertTrue($arClass->canSetProperty('name'));
@@ -531,8 +505,6 @@ public function testPropertyAccess(): void
 
     public function testHasProperty(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customer = new Customer();
 
         $this->assertTrue($customer->hasProperty('id'));
@@ -548,8 +520,6 @@ public function testHasProperty(): void
 
     public function testRefresh(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customer = new Customer();
 
         $this->assertFalse($customer->refresh());
@@ -564,8 +534,6 @@ public function testRefresh(): void
 
     public function testEquals(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerA = new Customer();
         $customerB = new Customer();
         $this->assertFalse($customerA->equals($customerB));
@@ -590,8 +558,7 @@ public static function providerForUnlinkDelete(): array
      */
     public function testUnlinkWithViaOnCondition($delete, $count): void
     {
-        $this->checkFixture($this->db(), 'order', true);
-        $this->checkFixture($this->db(), 'order_item_with_null_fk', true);
+        $this->reloadFixtureAfterTest();
 
         $orderQuery = new ActiveQuery(Order::class);
         $order = $orderQuery->findByPk(2);
@@ -616,8 +583,6 @@ public function testUnlinkWithViaOnCondition($delete, $count): void
 
     public function testVirtualRelation(): void
     {
-        $this->checkFixture($this->db(), 'order', true);
-
         $orderQuery = new ActiveQuery(Order::class);
         /** @var Order $order */
         $order = $orderQuery->findByPk(2);
@@ -633,8 +598,6 @@ public function testVirtualRelation(): void
      */
     public function testJoinWithEager(): void
     {
-        $this->checkFixture($this->db(), 'customer', true);
-
         $customerQuery = new ActiveQuery(Customer::class);
         $eagerCustomers = $customerQuery->joinWith(['items2'])->all();
         $eagerItemsCount = 0;
@@ -654,7 +617,7 @@ public function testJoinWithEager(): void
 
     public function testSaveWithoutChanges(): void
     {
-        $this->checkFixture($this->db(), 'customer');
+        $this->reloadFixtureAfterTest();
 
         $customerQuery = new ActiveQuery(Customer::class);
 
@@ -665,8 +628,6 @@ public function testSaveWithoutChanges(): void
 
     public function testGetPrimaryKey(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(Customer::class);
 
         $customer = $customerQuery->findByPk(1);
@@ -677,8 +638,6 @@ public function testGetPrimaryKey(): void
 
     public function testGetOldPrimaryKey(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(Customer::class);
 
         $customer = $customerQuery->findByPk(1);
@@ -690,7 +649,7 @@ public function testGetOldPrimaryKey(): void
 
     public function testGetDirtyValuesOnNewRecord(): void
     {
-        $this->checkFixture($this->db(), 'customer');
+        $this->reloadFixtureAfterTest();
 
         $customer = new Customer();
 
@@ -719,8 +678,6 @@ public function testGetDirtyValuesOnNewRecord(): void
 
     public function testGetDirtyValuesAfterFind(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(Customer::class);
         $customer = $customerQuery->findByPk(1);
 
@@ -742,8 +699,6 @@ public function testGetDirtyValuesAfterFind(): void
 
     public function testGetDirtyValuesWithProperties(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customer = new CustomerWithProperties();
         $this->assertSame([
             'name' => null,
@@ -772,8 +727,6 @@ public function testGetDirtyValuesWithProperties(): void
 
     public function testRelationNames(): void
     {
-        $this->checkFixture($this->db(), 'animal');
-
         $animal = new Animal();
 
         $this->assertEmpty($animal->relationNames());
@@ -802,8 +755,6 @@ public function testRelationNames(): void
 
     public function testGetSetMethodsPriority(): void
     {
-        $this->checkFixture($this->db(), 'order');
-
         $datetime = DateTimeImmutable::createFromFormat('U', '1325502201');
 
         $order = new Order();
@@ -815,8 +766,6 @@ public function testGetSetMethodsPriority(): void
 
     public function testIsChanged(): void
     {
-        $this->checkFixture($this->db(), 'item');
-
         $itemQuery = new ActiveQuery(Item::class);
         $item = $itemQuery->findByPk(1);
 
diff --git a/tests/RepositoryTraitTest.php b/tests/RepositoryTraitTest.php
index bce4cf5a0..db1ed61d3 100644
--- a/tests/RepositoryTraitTest.php
+++ b/tests/RepositoryTraitTest.php
@@ -11,8 +11,6 @@ abstract class RepositoryTraitTest extends TestCase
 {
     public function testFind(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(new CustomerWithRepositoryTrait());
 
         $this->assertEquals(
@@ -23,8 +21,6 @@ public function testFind(): void
 
     public function testFindOne(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(new CustomerWithRepositoryTrait());
 
         $this->assertEquals(
@@ -35,8 +31,6 @@ public function testFindOne(): void
 
     public function testFindAll(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(new CustomerWithRepositoryTrait());
 
         $this->assertEquals(
@@ -52,8 +46,6 @@ public function testFindAll(): void
 
     public function testFindByPk(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(new CustomerWithRepositoryTrait());
 
         $this->assertEquals(
@@ -64,8 +56,6 @@ public function testFindByPk(): void
 
     public function testFindBySql(): void
     {
-        $this->checkFixture($this->db(), 'customer');
-
         $customerQuery = new ActiveQuery(new CustomerWithRepositoryTrait());
 
         $this->assertEquals(
diff --git a/tests/TestCase.php b/tests/TestCase.php
index 0953f364f..2bf16195a 100644
--- a/tests/TestCase.php
+++ b/tests/TestCase.php
@@ -10,38 +10,57 @@
 
 abstract class TestCase extends \PHPUnit\Framework\TestCase
 {
-    abstract protected function createConnection(): ConnectionInterface;
+    private bool $shouldReloadFixture = false;
 
-    protected function checkFixture(ConnectionInterface $db, string $tablename, bool $reset = false): void
+    abstract protected static function createConnection(): ConnectionInterface;
+
+    /**
+     * Call this method in tests which modifies the database state to reload the connection and fixture after the tests.
+     */
+    protected function reloadFixtureAfterTest(): void
+    {
+        $this->shouldReloadFixture = true;
+    }
+
+    protected static function reloadFixture(): void
     {
-        $schema = $db->getSchema();
-        $tableSchema = $schema->getTableSchema($tablename, true);
+        ConnectionProvider::get()->close();
 
-        if ($tableSchema === null || $reset) {
-            DbHelper::loadFixture($db);
+        $db = static::createConnection();
+        ConnectionProvider::set($db);
 
-            $schema->refresh();
-        }
+        DbHelper::loadFixture($db);
     }
 
-    protected function db(): ConnectionInterface
+    protected static function db(): ConnectionInterface
     {
         return ConnectionProvider::get();
     }
 
-    protected function setUp(): void
+    public static function setUpBeforeClass(): void
     {
-        parent::setUp();
+        parent::setUpBeforeClass();
 
-        ConnectionProvider::set($this->createConnection());
+        $db = static::createConnection();
+        ConnectionProvider::set($db);
+        DbHelper::loadFixture($db);
     }
 
     protected function tearDown(): void
     {
-        parent::tearDown();
+        if ($this->shouldReloadFixture) {
+            $this->reloadFixture();
+            $this->shouldReloadFixture = false;
+        }
 
-        $this->db()->close();
+        parent::tearDown();
+    }
 
+    public static function tearDownAfterClass(): void
+    {
+        ConnectionProvider::get()->close();
         ConnectionProvider::remove();
+
+        parent::tearDownAfterClass();
     }
 }