diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 6c804d7..afc547c 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -11,14 +11,14 @@ jobs:
     continue-on-error: ${{ matrix.experimental }}
     strategy:
       matrix:
-        php-version: ['8.2', '8.3']
+        php-version: ['8.2', '8.3', '8.4']
         extensions: [':apcu, mbstring', 'apcu, mbstring']
         os: [ubuntu-latest]
         experimental: [false]
         composer-options: ['']
         include:
-          - { php-version: '8.4', experimental: true, os: ubuntu-latest, composer-options: '--ignore-platform-req=php+', extensions: 'apcu, mbstring' }
-          - { php-version: '8.4', experimental: true, os: ubuntu-latest, composer-options: '--ignore-platform-req=php+', extensions: ':apcu, mbstring' }
+          - { php-version: '8.5', experimental: true, os: ubuntu-latest, composer-options: '--ignore-platform-req=php+', extensions: 'apcu, mbstring' }
+          - { php-version: '8.5', experimental: true, os: ubuntu-latest, composer-options: '--ignore-platform-req=php+', extensions: ':apcu, mbstring' }
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
@@ -40,7 +40,7 @@ jobs:
           dependency-versions: highest
           composer-options: ${{ matrix.composer-options }}
 
-      - name: Run php tests
+      - name: Run PHP tests
         run: composer run phpunit -- --display-deprecations --display-notices --display-warnings --display-errors --display-skipped
 
       - name: Send coverage
diff --git a/CHANGELOG.md b/CHANGELOG.md
index f807ddc..6776e47 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,12 @@
 
 ## [Unreleased]
 
-* Drop support for PHP 7.1, PHP 7.2, PHP 7.3, PHP 7.4, PHP 8.0 and PHP 8.1.
+* Drop support for PHP 7.2, PHP 7.3, PHP 7.4, PHP 8.0 and PHP 8.1.
+
+## [Unreleased]
+
+* Bump PHP minimum version to 7.2
+* Add support for Symfony 7
 
 ## [5.3.1] - 2023-08-23
 
diff --git a/composer.json b/composer.json
index 8d74850..0926ef2 100644
--- a/composer.json
+++ b/composer.json
@@ -32,11 +32,12 @@
     },
     "require-dev": {
         "phpmyadmin/coding-standard": "^4.0",
-        "phpstan/extension-installer": "^1.3",
-        "phpstan/phpstan": "^1.10",
-        "phpstan/phpstan-phpunit": "^1.3",
-        "phpstan/phpstan-strict-rules": "^1.5",
-        "phpunit/phpunit": "^10.3",
+        "phpstan/extension-installer": "^1.4",
+        "phpstan/phpstan": "^1.12",
+        "phpstan/phpstan-deprecation-rules": "^1.2",
+        "phpstan/phpstan-phpunit": "^1.4",
+        "phpstan/phpstan-strict-rules": "^1.6",
+        "phpunit/phpunit": "^10.5",
         "psalm/plugin-phpunit": "^0.18.4",
         "vimeo/psalm": "^5.6"
     },
diff --git a/phpstan-baseline.neon b/phpstan-baseline.neon
index 4ed289e..d38ef7d 100644
--- a/phpstan-baseline.neon
+++ b/phpstan-baseline.neon
@@ -25,6 +25,16 @@ parameters:
 			count: 1
 			path: src/Loader.php
 
+		-
+			message: "#^Offset 'lang' on array\\{0\\: string, lang\\: non\\-falsy\\-string, 1\\: non\\-falsy\\-string, country\\?\\: string, 2\\?\\: string, charset\\?\\: string, 3\\?\\: string, modifier\\?\\: non\\-empty\\-string, \\.\\.\\.\\} on left side of \\?\\? always exists and is not nullable\\.$#"
+			count: 1
+			path: src/Loader.php
+
+		-
+			message: "#^Strict comparison using \\!\\=\\= between non\\-falsy\\-string and '' will always evaluate to true\\.$#"
+			count: 1
+			path: src/Loader.php
+
 		-
 			message: "#^Casting to int something that's already int\\.$#"
 			count: 1
@@ -50,46 +60,11 @@ parameters:
 			count: 1
 			path: src/Translator.php
 
-		-
-			message: "#^Dynamic call to static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertFalse\\(\\)\\.$#"
-			count: 1
-			path: tests/Cache/ApcuCacheFactoryTest.php
-
-		-
-			message: "#^Dynamic call to static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertInstanceOf\\(\\)\\.$#"
-			count: 1
-			path: tests/Cache/ApcuCacheFactoryTest.php
-
-		-
-			message: "#^Dynamic call to static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertSame\\(\\)\\.$#"
-			count: 2
-			path: tests/Cache/ApcuCacheFactoryTest.php
-
 		-
 			message: "#^Dynamic call to static method PHPUnit\\\\Framework\\\\Assert\\:\\:markTestSkipped\\(\\)\\.$#"
 			count: 1
 			path: tests/Cache/ApcuCacheFactoryTest.php
 
-		-
-			message: "#^Dynamic call to static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertEquals\\(\\)\\.$#"
-			count: 2
-			path: tests/Cache/ApcuCacheTest.php
-
-		-
-			message: "#^Dynamic call to static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertFalse\\(\\)\\.$#"
-			count: 4
-			path: tests/Cache/ApcuCacheTest.php
-
-		-
-			message: "#^Dynamic call to static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertSame\\(\\)\\.$#"
-			count: 11
-			path: tests/Cache/ApcuCacheTest.php
-
-		-
-			message: "#^Dynamic call to static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertTrue\\(\\)\\.$#"
-			count: 1
-			path: tests/Cache/ApcuCacheTest.php
-
 		-
 			message: "#^Dynamic call to static method PHPUnit\\\\Framework\\\\Assert\\:\\:markTestSkipped\\(\\)\\.$#"
 			count: 1
@@ -100,36 +75,6 @@ parameters:
 			count: 1
 			path: tests/Cache/ApcuDisabledTest.php
 
-		-
-			message: "#^Dynamic call to static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertEquals\\(\\)\\.$#"
-			count: 1
-			path: tests/Cache/InMemoryCacheTest.php
-
-		-
-			message: "#^Dynamic call to static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertFalse\\(\\)\\.$#"
-			count: 1
-			path: tests/Cache/InMemoryCacheTest.php
-
-		-
-			message: "#^Dynamic call to static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertSame\\(\\)\\.$#"
-			count: 4
-			path: tests/Cache/InMemoryCacheTest.php
-
-		-
-			message: "#^Dynamic call to static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertTrue\\(\\)\\.$#"
-			count: 1
-			path: tests/Cache/InMemoryCacheTest.php
-
-		-
-			message: "#^Dynamic call to static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertEquals\\(\\)\\.$#"
-			count: 9
-			path: tests/FunctionsTest.php
-
-		-
-			message: "#^Dynamic call to static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertEquals\\(\\)\\.$#"
-			count: 13
-			path: tests/LoaderTest.php
-
 		-
 			message: "#^Dynamic call to static method PHPUnit\\\\Framework\\\\Assert\\:\\:isInstanceOf\\(\\)\\.$#"
 			count: 1
@@ -144,38 +89,3 @@ parameters:
 			message: "#^Dynamic call to static method PHPUnit\\\\Framework\\\\TestCase\\:\\:once\\(\\)\\.$#"
 			count: 1
 			path: tests/LoaderTest.php
-
-		-
-			message: "#^Dynamic call to static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertEquals\\(\\)\\.$#"
-			count: 16
-			path: tests/MoFilesTest.php
-
-		-
-			message: "#^Dynamic call to static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertEquals\\(\\)\\.$#"
-			count: 3
-			path: tests/PluralFormulaTest.php
-
-		-
-			message: "#^Dynamic call to static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertSame\\(\\)\\.$#"
-			count: 3
-			path: tests/PluralTest.php
-
-		-
-			message: "#^Dynamic call to static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertFileExists\\(\\)\\.$#"
-			count: 2
-			path: tests/StringReaderTest.php
-
-		-
-			message: "#^Dynamic call to static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertSame\\(\\)\\.$#"
-			count: 2
-			path: tests/StringReaderTest.php
-
-		-
-			message: "#^Dynamic call to static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertEquals\\(\\)\\.$#"
-			count: 6
-			path: tests/TranslatorTest.php
-
-		-
-			message: "#^Dynamic call to static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertSame\\(\\)\\.$#"
-			count: 6
-			path: tests/TranslatorTest.php
diff --git a/phpstan.neon.dist b/phpstan.neon.dist
index 14356a3..16a94f4 100644
--- a/phpstan.neon.dist
+++ b/phpstan.neon.dist
@@ -6,7 +6,7 @@ parameters:
         - src
         - tests
     checkBenevolentUnionTypes: true
+    checkDynamicProperties: true
     checkImplicitMixed: true
     checkTooWideReturnTypesInProtectedAndPublicMethods: true
     checkUninitializedProperties: true
-    reportUnmatchedIgnoredErrors: true
diff --git a/psalm-baseline.xml b/psalm-baseline.xml
index c332561..7d9864f 100644
--- a/psalm-baseline.xml
+++ b/psalm-baseline.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<files psalm-version="5.25.0@01a8eb06b9e9cc6cfb6a320bf9fb14331919d505">
+<files psalm-version="5.26.1@d747f6500b38ac4f7dfc5edbcae6e4b637d7add0">
   <file src="src/Cache/ApcuCache.php">
     <MixedAssignment>
       <code><![CDATA[$cached]]></code>
diff --git a/tests/Cache/ApcuCacheFactoryTest.php b/tests/Cache/ApcuCacheFactoryTest.php
index cc1ba52..858c105 100644
--- a/tests/Cache/ApcuCacheFactoryTest.php
+++ b/tests/Cache/ApcuCacheFactoryTest.php
@@ -41,7 +41,7 @@ public function testGetInstanceReturnApcuCache(): void
     {
         $factory = new ApcuCacheFactory();
         $instance = $factory->getInstance(new MoParser(null), 'foo', 'bar');
-        $this->assertInstanceOf(ApcuCache::class, $instance);
+        self::assertInstanceOf(ApcuCache::class, $instance);
     }
 
     public function testConstructorSetsTtl(): void
@@ -57,7 +57,7 @@ public function testConstructorSetsTtl(): void
         sleep($ttl * 2);
 
         apcu_fetch('mo_' . $locale . '.' . $domain . '.' . $msgid, $success);
-        $this->assertFalse($success);
+        self::assertFalse($success);
     }
 
     public function testConstructorSetsReloadOnMiss(): void
@@ -74,7 +74,7 @@ public function testConstructorSetsReloadOnMiss(): void
 
         apcu_delete('mo_' . $locale . '.' . $domain . '.' . $msgid);
         $actual = $instance->get($msgid);
-        $this->assertSame($expected, $actual);
+        self::assertSame($expected, $actual);
     }
 
     public function testConstructorSetsPrefix(): void
@@ -91,6 +91,6 @@ public function testConstructorSetsPrefix(): void
         $factory->getInstance($parser, $locale, $domain);
 
         $actual = apcu_fetch($prefix . $locale . '.' . $domain . '.' . $msgid);
-        $this->assertSame($expected, $actual);
+        self::assertSame($expected, $actual);
     }
 }
diff --git a/tests/Cache/ApcuCacheTest.php b/tests/Cache/ApcuCacheTest.php
index 06c8ff8..c7b22c2 100644
--- a/tests/Cache/ApcuCacheTest.php
+++ b/tests/Cache/ApcuCacheTest.php
@@ -51,7 +51,7 @@ public function testConstructorLoadsCache(): void
         new ApcuCache(new MoParser(__DIR__ . '/../data/little.mo'), $locale, $domain);
 
         $actual = apcu_fetch('mo_' . $locale . '.' . $domain . '.' . $msgid);
-        $this->assertSame($expected, $actual);
+        self::assertSame($expected, $actual);
     }
 
     public function testConstructorSetsTtl(): void
@@ -65,9 +65,9 @@ public function testConstructorSetsTtl(): void
         sleep($ttl * 2);
 
         apcu_fetch('mo_' . $locale . '.' . $domain . '.' . $msgid, $success);
-        $this->assertFalse($success);
+        self::assertFalse($success);
         apcu_fetch('mo_' . $locale . '.' . $domain . '.' . ApcuCache::LOADED_KEY, $success);
-        $this->assertFalse($success);
+        self::assertFalse($success);
     }
 
     public function testConstructorSetsReloadOnMiss(): void
@@ -89,7 +89,7 @@ public function testConstructorSetsReloadOnMiss(): void
 
         apcu_delete($prefix . $locale . '.' . $domain . '.' . $msgid);
         $actual = $cache->get($msgid);
-        $this->assertEquals($expected, $actual);
+        self::assertSame($expected, $actual);
     }
 
     public function testConstructorSetsPrefix(): void
@@ -103,7 +103,7 @@ public function testConstructorSetsPrefix(): void
         new ApcuCache(new MoParser(__DIR__ . '/../data/little.mo'), $locale, $domain, 0, true, $prefix);
 
         $actual = apcu_fetch($prefix . $locale . '.' . $domain . '.' . $msgid);
-        $this->assertSame($expected, $actual);
+        self::assertSame($expected, $actual);
     }
 
     public function testEnsureTranslationsLoadedSetsLoadedKey(): void
@@ -115,7 +115,7 @@ public function testEnsureTranslationsLoadedSetsLoadedKey(): void
         new ApcuCache(new MoParser(__DIR__ . '/../data/little.mo'), $locale, $domain);
 
         $actual = apcu_fetch('mo_' . $locale . '.' . $domain . '.' . ApcuCache::LOADED_KEY);
-        $this->assertSame($expected, $actual);
+        self::assertSame($expected, $actual);
     }
 
     public function testEnsureTranslationsLoadedHonorsLock(): void
@@ -134,9 +134,9 @@ public function testEnsureTranslationsLoadedHonorsLock(): void
         new ApcuCache(new MoParser(__DIR__ . '/../data/little.mo'), $locale, $domain);
 
         $actual = apcu_fetch($lock);
-        $this->assertSame(1, $actual);
+        self::assertSame(1, $actual);
         apcu_fetch('mo_' . $locale . '.' . $domain . '.' . $msgid, $success);
-        $this->assertFalse($success);
+        self::assertFalse($success);
     }
 
     public function testGetReturnsMsgstr(): void
@@ -147,7 +147,7 @@ public function testGetReturnsMsgstr(): void
         $cache = new ApcuCache(new MoParser(__DIR__ . '/../data/little.mo'), 'foo', 'bar');
 
         $actual = $cache->get($msgid);
-        $this->assertSame($expected, $actual);
+        self::assertSame($expected, $actual);
     }
 
     public function testGetReturnsMsgidForCacheMiss(): void
@@ -157,7 +157,7 @@ public function testGetReturnsMsgidForCacheMiss(): void
         $cache = new ApcuCache(new MoParser(null), 'foo', 'bar');
 
         $actual = $cache->get($expected);
-        $this->assertSame($expected, $actual);
+        self::assertSame($expected, $actual);
     }
 
     public function testStoresMsgidOnCacheMiss(): void
@@ -170,7 +170,7 @@ public function testStoresMsgidOnCacheMiss(): void
         $cache->get($expected);
 
         $actual = apcu_fetch('mo_' . $locale . '.' . $domain . '.' . $expected);
-        $this->assertSame($expected, $actual);
+        self::assertSame($expected, $actual);
     }
 
     public function testGetReloadsOnCacheMiss(): void
@@ -184,7 +184,7 @@ public function testGetReloadsOnCacheMiss(): void
 
         apcu_delete('mo_' . $locale . '.' . $domain . '.' . ApcuCache::LOADED_KEY);
         $actual = $cache->get($msgid);
-        $this->assertSame($expected, $actual);
+        self::assertSame($expected, $actual);
     }
 
     public function testReloadOnMissHonorsLock(): void
@@ -207,7 +207,7 @@ public function testReloadOnMissHonorsLock(): void
         });
         $actual = $method->invoke($cache, $msgid);
 
-        $this->assertSame($expected, $actual);
+        self::assertSame($expected, $actual);
     }
 
     public function testSetSetsMsgstr(): void
@@ -219,21 +219,21 @@ public function testSetSetsMsgstr(): void
         $cache->set($msgid, $expected);
 
         $actual = $cache->get($msgid);
-        $this->assertSame($expected, $actual);
+        self::assertSame($expected, $actual);
     }
 
     public function testHasReturnsFalse(): void
     {
         $cache = new ApcuCache(new MoParser(null), 'foo', 'bar');
         $actual = $cache->has('Column');
-        $this->assertFalse($actual);
+        self::assertFalse($actual);
     }
 
     public function testHasReturnsTrue(): void
     {
         $cache = new ApcuCache(new MoParser(__DIR__ . '/../data/little.mo'), 'foo', 'bar');
         $actual = $cache->has('Column');
-        $this->assertTrue($actual);
+        self::assertTrue($actual);
     }
 
     public function testSetAllSetsTranslations(): void
@@ -248,7 +248,7 @@ public function testSetAllSetsTranslations(): void
 
         foreach ($translations as $msgid => $expected) {
             $actual = $cache->get($msgid);
-            $this->assertEquals($expected, $actual);
+            self::assertSame($expected, $actual);
         }
     }
 
@@ -263,6 +263,6 @@ public function testCacheStoresPluralForms(): void
 
         $msgstr = $cache->get($msgid);
         $actual = explode(chr(0), $msgstr);
-        $this->assertSame($expected, $actual);
+        self::assertSame($expected, $actual);
     }
 }
diff --git a/tests/Cache/InMemoryCacheTest.php b/tests/Cache/InMemoryCacheTest.php
index 6b1a73d..b869218 100644
--- a/tests/Cache/InMemoryCacheTest.php
+++ b/tests/Cache/InMemoryCacheTest.php
@@ -17,7 +17,7 @@ public function testConstructorParsesCache(): void
         $parser = new MoParser(__DIR__ . '/../data/little.mo');
         $cache = new InMemoryCache($parser);
         $actual = $cache->get('Column');
-        $this->assertSame($expected, $actual);
+        self::assertSame($expected, $actual);
     }
 
     public function testGetReturnsMsgidForCacheMiss(): void
@@ -25,7 +25,7 @@ public function testGetReturnsMsgidForCacheMiss(): void
         $expected = 'Column';
         $cache = new InMemoryCache(new MoParser(null));
         $actual = $cache->get($expected);
-        $this->assertSame($expected, $actual);
+        self::assertSame($expected, $actual);
     }
 
     public function testSetSetsMsgstr(): void
@@ -35,21 +35,21 @@ public function testSetSetsMsgstr(): void
         $cache = new InMemoryCache(new MoParser(null));
         $cache->set($msgid, $expected);
         $actual = $cache->get($msgid);
-        $this->assertSame($expected, $actual);
+        self::assertSame($expected, $actual);
     }
 
     public function testHasReturnsFalse(): void
     {
         $cache = new InMemoryCache(new MoParser(null));
         $actual = $cache->has('Column');
-        $this->assertFalse($actual);
+        self::assertFalse($actual);
     }
 
     public function testHasReturnsTrue(): void
     {
         $cache = new InMemoryCache(new MoParser(__DIR__ . '/../data/little.mo'));
         $actual = $cache->has('Column');
-        $this->assertTrue($actual);
+        self::assertTrue($actual);
     }
 
     public function testSetAllSetsTranslations(): void
@@ -62,7 +62,7 @@ public function testSetAllSetsTranslations(): void
         $cache->setAll($translations);
         foreach ($translations as $msgid => $expected) {
             $actual = $cache->get($msgid);
-            $this->assertEquals($expected, $actual);
+            self::assertSame($expected, $actual);
         }
     }
 
@@ -75,6 +75,6 @@ public function testGetAllReturnsTranslations(): void
         $cache = new InMemoryCache(new MoParser(null));
         $cache->setAll($expected);
         $actual = $cache->getAll();
-        $this->assertSame($expected, $actual);
+        self::assertSame($expected, $actual);
     }
 }
diff --git a/tests/FunctionsTest.php b/tests/FunctionsTest.php
index 803dcb0..de04195 100644
--- a/tests/FunctionsTest.php
+++ b/tests/FunctionsTest.php
@@ -38,79 +38,34 @@ public function setUp(): void
 
     public function testGettext(): void
     {
-        $this->assertEquals(
+        self::assertSame(
             'Typ',
             _gettext('Type'),
         );
 
-        $this->assertEquals(
+        self::assertSame(
             'Typ',
             __('Type'),
         );
 
-        $this->assertEquals(
-            '%d sekundy',
-            _ngettext(
-                '%d second',
-                '%d seconds',
-                2,
-            ),
-        );
+        self::assertSame('%d sekundy', _ngettext('%d second', '%d seconds', 2));
 
-        $this->assertEquals(
-            '%d seconds',
-            _npgettext(
-                'context',
-                '%d second',
-                '%d seconds',
-                2,
-            ),
-        );
+        self::assertSame('%d seconds', _npgettext('context', '%d second', '%d seconds', 2));
 
-        $this->assertEquals(
-            'Tabulka',
-            _pgettext(
-                'Display format',
-                'Table',
-            ),
-        );
+        self::assertSame('Tabulka', _pgettext('Display format', 'Table'));
     }
 
     public function testDomain(): void
     {
-        $this->assertEquals(
+        self::assertSame(
             'Typ',
             _dgettext('phpmyadmin', 'Type'),
         );
 
-        $this->assertEquals(
-            '%d sekundy',
-            _dngettext(
-                'phpmyadmin',
-                '%d second',
-                '%d seconds',
-                2,
-            ),
-        );
+        self::assertSame('%d sekundy', _dngettext('phpmyadmin', '%d second', '%d seconds', 2));
 
-        $this->assertEquals(
-            '%d seconds',
-            _dnpgettext(
-                'phpmyadmin',
-                'context',
-                '%d second',
-                '%d seconds',
-                2,
-            ),
-        );
+        self::assertSame('%d seconds', _dnpgettext('phpmyadmin', 'context', '%d second', '%d seconds', 2));
 
-        $this->assertEquals(
-            'Tabulka',
-            _dpgettext(
-                'phpmyadmin',
-                'Display format',
-                'Table',
-            ),
-        );
+        self::assertSame('Tabulka', _dpgettext('phpmyadmin', 'Display format', 'Table'));
     }
 }
diff --git a/tests/LoaderTest.php b/tests/LoaderTest.php
index c00692f..36ab8c6 100644
--- a/tests/LoaderTest.php
+++ b/tests/LoaderTest.php
@@ -26,10 +26,7 @@ class LoaderTest extends TestCase
      */
     public function testListLocales(string $locale, array $expected): void
     {
-        $this->assertEquals(
-            $expected,
-            Loader::listLocales($locale),
-        );
+        self::assertSame($expected, Loader::listLocales($locale));
     }
 
     /** @return list<array{string, list<string>}> */
@@ -151,10 +148,10 @@ public function testLocaleChange(): void
         $loader->textdomain('phpmyadmin');
         $loader->bindtextdomain('phpmyadmin', __DIR__ . '/data/locale/');
         $translator = $loader->getTranslator('phpmyadmin');
-        $this->assertEquals('Typ', $translator->gettext('Type'));
+        self::assertSame('Typ', $translator->gettext('Type'));
         $loader->setlocale('be_BY');
         $translator = $loader->getTranslator('phpmyadmin');
-        $this->assertEquals('Тып', $translator->gettext('Type'));
+        self::assertSame('Тып', $translator->gettext('Type'));
     }
 
     /** @dataProvider translatorData */
@@ -162,7 +159,7 @@ public function testGetTranslator(string $domain, string $locale, string $otherd
     {
         $loader = $this->getLoader($domain, $locale);
         $translator = $loader->getTranslator($otherdomain);
-        $this->assertEquals(
+        self::assertSame(
             $expected,
             $translator->gettext('Type'),
         );
@@ -219,7 +216,7 @@ public function testInstance(): void
         $loader->bindtextdomain('phpmyadmin', __DIR__ . '/data/locale/');
 
         $translator = $loader->getTranslator();
-        $this->assertEquals(
+        self::assertSame(
             'Typ',
             $translator->gettext('Type'),
         );
@@ -227,7 +224,7 @@ public function testInstance(): void
         /* Ensure the object survives */
         $loader = Loader::getInstance();
         $translator = $loader->getTranslator();
-        $this->assertEquals(
+        self::assertSame(
             'Typ',
             $translator->gettext('Type'),
         );
@@ -237,7 +234,7 @@ public function testInstance(): void
         $loader->setlocale('be_BY');
         $loader->bindtextdomain('phpmyadmin', __DIR__ . '/data/locale/');
         $translator = $loader->getTranslator();
-        $this->assertEquals(
+        self::assertSame(
             'Тып',
             $translator->gettext('Type'),
         );
@@ -247,7 +244,7 @@ public function testDetect(): void
     {
         $GLOBALS['lang'] = 'foo';
         $loader = Loader::getInstance();
-        $this->assertEquals(
+        self::assertSame(
             'foo',
             $loader->detectlocale(),
         );
@@ -268,24 +265,24 @@ public function testDetectEnv(): void
 
         unset($GLOBALS['lang']);
         putenv('LC_ALL=baz');
-        $this->assertEquals(
+        self::assertSame(
             'baz',
             $loader->detectlocale(),
         );
         putenv('LC_ALL');
         putenv('LC_MESSAGES=bar');
-        $this->assertEquals(
+        self::assertSame(
             'bar',
             $loader->detectlocale(),
         );
         putenv('LC_MESSAGES');
         putenv('LANG=barr');
-        $this->assertEquals(
+        self::assertSame(
             'barr',
             $loader->detectlocale(),
         );
         putenv('LANG');
-        $this->assertEquals(
+        self::assertSame(
             'en',
             $loader->detectlocale(),
         );
@@ -314,6 +311,6 @@ public function testSetCacheFactory(): void
         $translator = $loader->getTranslator($domain);
 
         $actual = $translator->gettext('Type');
-        $this->assertEquals($expected, $actual);
+        self::assertSame($expected, $actual);
     }
 }
diff --git a/tests/MoFilesTest.php b/tests/MoFilesTest.php
index 3706d2b..2452cfc 100644
--- a/tests/MoFilesTest.php
+++ b/tests/MoFilesTest.php
@@ -22,12 +22,12 @@ class MoFilesTest extends TestCase
     public function testMoFileTranslate(string $filename): void
     {
         $parser = $this->getTranslator($filename);
-        $this->assertEquals(
+        self::assertSame(
             'Pole',
             $parser->gettext('Column'),
         );
         // Non existing string
-        $this->assertEquals(
+        self::assertSame(
             'Column parser',
             $parser->gettext('Column parser'),
         );
@@ -47,82 +47,27 @@ public function testMoFilePlurals(string $filename): void
             $expected0 = '%d sekund';
         }
 
-        $this->assertEquals(
-            $expected0,
-            $parser->ngettext(
-                '%d second',
-                '%d seconds',
-                0,
-            ),
-        );
-        $this->assertEquals(
-            '%d sekunda',
-            $parser->ngettext(
-                '%d second',
-                '%d seconds',
-                1,
-            ),
-        );
-        $this->assertEquals(
-            $expected2,
-            $parser->ngettext(
-                '%d second',
-                '%d seconds',
-                2,
-            ),
-        );
-        $this->assertEquals(
-            $expected0,
-            $parser->ngettext(
-                '%d second',
-                '%d seconds',
-                5,
-            ),
-        );
-        $this->assertEquals(
-            $expected0,
-            $parser->ngettext(
-                '%d second',
-                '%d seconds',
-                10,
-            ),
-        );
+        self::assertSame($expected0, $parser->ngettext('%d second', '%d seconds', 0));
+        self::assertSame('%d sekunda', $parser->ngettext('%d second', '%d seconds', 1));
+        self::assertSame($expected2, $parser->ngettext('%d second', '%d seconds', 2));
+        self::assertSame($expected0, $parser->ngettext('%d second', '%d seconds', 5));
+        self::assertSame($expected0, $parser->ngettext('%d second', '%d seconds', 10));
         // Non existing string
-        $this->assertEquals(
-            '"%d" seconds',
-            $parser->ngettext(
-                '"%d" second',
-                '"%d" seconds',
-                10,
-            ),
-        );
+        self::assertSame('"%d" seconds', $parser->ngettext('"%d" second', '"%d" seconds', 10));
     }
 
     /** @dataProvider provideMoFiles */
     public function testMoFileContext(string $filename): void
     {
         $parser = $this->getTranslator($filename);
-        $this->assertEquals(
-            'Tabulka',
-            $parser->pgettext(
-                'Display format',
-                'Table',
-            ),
-        );
+        self::assertSame('Tabulka', $parser->pgettext('Display format', 'Table'));
     }
 
     /** @dataProvider provideNotTranslatedFiles */
     public function testMoFileNotTranslated(string $filename): void
     {
         $parser = $this->getTranslator($filename);
-        $this->assertEquals(
-            '%d second',
-            $parser->ngettext(
-                '%d second',
-                '%d seconds',
-                1,
-            ),
-        );
+        self::assertSame('%d second', $parser->ngettext('%d second', '%d seconds', 1));
     }
 
     /** @return list<array{string}> */
@@ -149,40 +94,21 @@ public function testEmptyMoFile(string $file): void
         $parser = new MoParser($file);
         $translator = new Translator(new InMemoryCache($parser));
         if (basename($file) === 'magic.mo') {
-            $this->assertEquals(Translator::ERROR_BAD_MAGIC, $parser->error);
+            self::assertSame(Translator::ERROR_BAD_MAGIC, $parser->error);
         } else {
-            $this->assertEquals(Translator::ERROR_READING, $parser->error);
+            self::assertSame(Translator::ERROR_READING, $parser->error);
         }
 
-        $this->assertEquals(
-            'Table',
-            $translator->pgettext(
-                'Display format',
-                'Table',
-            ),
-        );
-        $this->assertEquals(
-            '"%d" seconds',
-            $translator->ngettext(
-                '"%d" second',
-                '"%d" seconds',
-                10,
-            ),
-        );
+        self::assertSame('Table', $translator->pgettext('Display format', 'Table'));
+        self::assertSame('"%d" seconds', $translator->ngettext('"%d" second', '"%d" seconds', 10));
     }
 
     /** @dataProvider provideMoFiles */
     public function testExists(string $file): void
     {
         $parser = $this->getTranslator($file);
-        $this->assertEquals(
-            true,
-            $parser->exists('Column'),
-        );
-        $this->assertEquals(
-            false,
-            $parser->exists('Column parser'),
-        );
+        self::assertTrue($parser->exists('Column'));
+        self::assertFalse($parser->exists('Column parser'));
     }
 
     /**
diff --git a/tests/PluralFormulaTest.php b/tests/PluralFormulaTest.php
index 0390031..a14a5c2 100644
--- a/tests/PluralFormulaTest.php
+++ b/tests/PluralFormulaTest.php
@@ -19,7 +19,7 @@ class PluralFormulaTest extends TestCase
      */
     public function testExtractPluralsForms(string $header, string $expected): void
     {
-        $this->assertEquals(
+        self::assertSame(
             $expected,
             Translator::extractPluralsForms($header),
         );
@@ -59,7 +59,7 @@ public static function pluralExtractionData(): array
     /** @dataProvider pluralCounts */
     public function testPluralCounts(string $expr, int $expected): void
     {
-        $this->assertEquals(
+        self::assertSame(
             $expected,
             Translator::extractPluralCount($expr),
         );
@@ -99,7 +99,7 @@ public static function pluralCounts(): array
     /** @dataProvider pluralExpressions */
     public function testPluralExpression(string $expr, string $expected): void
     {
-        $this->assertEquals(
+        self::assertSame(
             $expected,
             Translator::sanitizePluralExpression($expr),
         );
diff --git a/tests/PluralTest.php b/tests/PluralTest.php
index 776258e..8a82e5f 100644
--- a/tests/PluralTest.php
+++ b/tests/PluralTest.php
@@ -29,7 +29,7 @@ public function testNpgettext(int $number, string $expected): void
     {
         $parser = $this->getTranslator('');
         $result = $parser->npgettext('context', "%d pig went to the market\n", "%d pigs went to the market\n", $number);
-        $this->assertSame($expected, $result);
+        self::assertSame($expected, $result);
     }
 
     /**
@@ -60,7 +60,7 @@ public function testNgettext(): void
         $translationKey = implode(chr(0), ["%d pig went to the market\n", "%d pigs went to the market\n"]);
         $parser->setTranslation($translationKey, '');
         $result = $parser->ngettext("%d pig went to the market\n", "%d pigs went to the market\n", 1);
-        $this->assertSame('', $result);
+        self::assertSame('', $result);
     }
 
     /** @return list<array{string}> */
@@ -113,7 +113,7 @@ public function testNgettextSelectString(string $pluralForms): void
         $translationKey = implode(chr(0), ["%d pig went to the market\n", "%d pigs went to the market\n"]);
         $parser->setTranslation($translationKey, 'ok');
         $result = $parser->ngettext("%d pig went to the market\n", "%d pigs went to the market\n", 1);
-        $this->assertSame('ok', $result);
+        self::assertSame('ok', $result);
     }
 
     private function getTranslator(string $filename): Translator
diff --git a/tests/StringReaderTest.php b/tests/StringReaderTest.php
index 17dc794..1af9fe2 100644
--- a/tests/StringReaderTest.php
+++ b/tests/StringReaderTest.php
@@ -17,22 +17,22 @@ class StringReaderTest extends TestCase
     public function testReadFails(): void
     {
         $tempFile = (string) tempnam(sys_get_temp_dir(), 'phpMyAdmin_StringReaderTest');
-        $this->assertFileExists($tempFile);
+        self::assertFileExists($tempFile);
         $stringReader = new StringReader($tempFile);
         unlink($tempFile);
         $actual = $stringReader->read(-1, -1);
-        $this->assertSame('', $actual);
+        self::assertSame('', $actual);
     }
 
     public function testReadIntArray(): void
     {
         $tempFile = (string) tempnam(sys_get_temp_dir(), 'phpMyAdmin_StringReaderTest');
         file_put_contents($tempFile, "\0\0\0\0\0\0\0\0\0\0\0\0");
-        $this->assertFileExists($tempFile);
+        self::assertFileExists($tempFile);
         $stringReader = new StringReader($tempFile);
         unlink($tempFile);
         $actual = $stringReader->readintarray('V', 2, 2);
-        $this->assertSame([
+        self::assertSame([
             1 => 0,
             2 => 0,
         ], $actual);
diff --git a/tests/TranslatorTest.php b/tests/TranslatorTest.php
index 58a04b4..f890fcf 100644
--- a/tests/TranslatorTest.php
+++ b/tests/TranslatorTest.php
@@ -22,7 +22,7 @@ public function testConstructorWithFilenameParam(): void
         $expected = 'Pole';
         $translator = new Translator(__DIR__ . '/data/little.mo');
         $actual = $translator->gettext('Column');
-        $this->assertSame($expected, $actual);
+        self::assertSame($expected, $actual);
     }
 
     public function testConstructorWithNullParam(): void
@@ -30,7 +30,7 @@ public function testConstructorWithNullParam(): void
         $expected = 'Column';
         $translator = new Translator(null);
         $actual = $translator->gettext($expected);
-        $this->assertSame($expected, $actual);
+        self::assertSame($expected, $actual);
     }
 
     /**
@@ -39,7 +39,7 @@ public function testConstructorWithNullParam(): void
     public function testGettext(): void
     {
         $translator = $this->getTranslator('');
-        $this->assertEquals('Test', $translator->gettext('Test'));
+        self::assertSame('Test', $translator->gettext('Test'));
     }
 
     /**
@@ -49,7 +49,7 @@ public function testSetTranslation(): void
     {
         $translator = $this->getTranslator('');
         $translator->setTranslation('Test', 'Translation');
-        $this->assertEquals('Translation', $translator->gettext('Test'));
+        self::assertSame('Translation', $translator->gettext('Test'));
     }
 
     /**
@@ -60,12 +60,12 @@ public function testGetSetTranslations(): void
         $transTable = ['Test' => 'Translation'];
         $translator = $this->getTranslator('');
         $translator->setTranslations($transTable);
-        $this->assertEquals('Translation', $translator->gettext('Test'));
-        $this->assertSame($transTable, $translator->getTranslations());
+        self::assertSame('Translation', $translator->gettext('Test'));
+        self::assertSame($transTable, $translator->getTranslations());
         $translator = $this->getTranslator(null);
         $translator->setTranslations($transTable);
-        $this->assertSame($transTable, $translator->getTranslations());
-        $this->assertEquals('Translation', $translator->gettext('Test'));
+        self::assertSame($transTable, $translator->getTranslations());
+        self::assertSame('Translation', $translator->gettext('Test'));
         $transTable = [
             'Test' => 'Translation',
             'shouldIWriteTests' => 'as much as possible',
@@ -73,12 +73,12 @@ public function testGetSetTranslations(): void
         ];
         $translator = $this->getTranslator('');
         $translator->setTranslations($transTable);
-        $this->assertSame($transTable, $translator->getTranslations());
-        $this->assertEquals('as much as possible', $translator->gettext('shouldIWriteTests'));
+        self::assertSame($transTable, $translator->getTranslations());
+        self::assertSame('as much as possible', $translator->gettext('shouldIWriteTests'));
         $translator = $this->getTranslator(null);
         $translator->setTranslations($transTable);
-        $this->assertSame($transTable, $translator->getTranslations());
-        $this->assertEquals('it depends', $translator->gettext('is it hard'));
+        self::assertSame($transTable, $translator->getTranslations());
+        self::assertSame('it depends', $translator->gettext('is it hard'));
     }
 
     public function testGetTranslationsThrowsException(): void