Add integration tests (#3)

Add integration tests

phpunit.xml.dist

@@ -10,8 +10,11 @@
          processIsolation="false"
          stopOnFailure="false">
     <testsuites>
-        <testsuite name="Test Suite">
-            <directory>tests</directory>
+        <testsuite name="Unit tests">
+            <directory>tests/Unit</directory>
+        </testsuite>
+        <testsuite name="Integration tests">
+            <directory>tests/Integration</directory>
         </testsuite>
     </testsuites>
     <filter>

tests/Integration/IntegrationTest.php

@@ -0,0 +1,71 @@
+<?php
+
+namespace Dzava\ResourceIterator\Tests\Integration;
+
+use Dzava\ResourceIterator\PagedResourceIterator;
+use Dzava\ResourceIterator\ResourceIterator;
+use PHPUnit\Framework\TestCase;
+
+class IntegrationTest extends TestCase
+{
+    /** @var ResourceIterator $resource */
+    protected $resource;
+
+    private $firstPageResults = ['George', 'Janet', 'Emma', 'Eve', 'Charles', 'Tracey'];
+    private $secondPageResults = ['Michael', 'Lindsay', 'Tobias', 'Byron', 'George', 'Rachel'];
+    private $allResults;
+
+    protected function setUp()
+    {
+        parent::setUp();
+
+        $this->resource = $this->getPagedResourceIterator('https://reqres.in/api/users');
+
+        $this->allResults = array_merge($this->firstPageResults, $this->secondPageResults);
+    }
+
+    /** @test */
+    public function can_fetch_all_pages()
+    {
+        $items = $this->resource->toArray();
+
+        $this->assertEquals($this->allResults, $items);
+    }
+
+    /** @test */
+    public function can_limit_the_max_number_of_requests()
+    {
+        $this->resource->maxRequests(1);
+
+        $this->assertEquals($this->firstPageResults, $this->resource->toArray());
+    }
+
+    /** @test */
+    public function can_start_at_a_page_that_is_not_the_first_one()
+    {
+        $this->resource = $this->getPagedResourceIterator('https://reqres.in/api/users?page=2');
+
+        $this->assertEquals($this->secondPageResults, $this->resource->toArray());
+    }
+
+    /** @test */
+    public function does_not_fail_if_the_response_is_empty()
+    {
+        $this->resource = $this->getPagedResourceIterator('https://reqres.in/api/users?page=100');
+
+        $this->assertEmpty($this->resource->toArray());
+    }
+
+    protected function getPagedResourceIterator($url)
+    {
+        return new class($url) extends PagedResourceIterator {
+            public function toArray()
+            {
+                return array_map(function ($item) {
+                    return $item->first_name;
+                }, parent::toArray());
+            }
+        };
+    }
+
+}

tests/PagedResourceTest.php → tests/Unit/UnitTest.php

@@ -1,14 +1,14 @@
 <?php
 
-namespace Tests\Feature;
+namespace Dzava\ResourceIterator\Tests\Unit;
 
 use Dzava\ResourceIterator\PagedResourceIterator;
 use Dzava\ResourceIterator\ResourceIterator;
 use Illuminate\Support\Arr;
 use PHPUnit\Framework\TestCase;
 use stdClass;
 
-class PagedResourceTest extends TestCase
+class UnitTest extends TestCase
 {
     /** @var ResourceIterator $resource */
     protected $resource;