Testing API Platform Endpoints

Use ApiPlatform\Symfony\Bundle\Test\ApiTestCase for functional API tests.

Base Test Class

Create a base class that handles database setup and authentication:

<?php
namespace App\Tests;

use ApiPlatform\Symfony\Bundle\Test\ApiTestCase as SymfonyApiTestCase;
use ApiPlatform\Symfony\Bundle\Test\Client;

class ApiTestCase extends SymfonyApiTestCase
{
    protected function setUp(): void
    {
        parent::setUp();
        // Reset database state for each test
        $manager = static::getContainer()->get('doctrine')->getManager();
        // For MongoDB: drop and recreate
        // For ORM: use fixtures or transactions
    }

    /**
     * Creates an authenticated client with test fixtures.
     */
    public function createLoggedInClient(): Client
    {
        $manager = static::getContainer()->get('doctrine')->getManager();

        // Create user, token, and required fixtures
        $user = new User();
        // ... set up user
        $manager->persist($user);
        $manager->flush();

        // Return client with auth headers
        return static::createClient([], [
            'headers' => ['x-api-key' => 'test_token'],
        ]);
    }
}

Basic CRUD Tests

class OrderTest extends ApiTestCase
{
    public function testGetCollection(): void
    {
        $client = $this->createLoggedInClient();
        $client->request('GET', '/orders');

        $this->assertResponseIsSuccessful();
        $this->assertResponseHeaderSame('content-type', 'application/ld+json; charset=utf-8');
    }

    public function testCreate(): void
    {
        $client = $this->createLoggedInClient();
        $client->request('POST', '/orders', [
            'headers' => ['Content-Type' => 'application/ld+json'],
            'json' => ['name' => 'Test Order', 'total' => 99.99],
        ]);

        $this->assertResponseStatusCodeSame(201);
        $data = $client->getResponse()->toArray();
        $this->assertSame('Test Order', $data['name']);
    }

    public function testUpdate(): void
    {
        $client = $this->createLoggedInClient();

        // Create then update
        $client->request('POST', '/orders', [
            'headers' => ['Content-Type' => 'application/ld+json'],
            'json' => ['name' => 'Original'],
        ]);
        $order = $client->getResponse()->toArray();

        $client->request('PATCH', '/orders/' . $order['id'], [
            'headers' => ['Content-Type' => 'application/merge-patch+json'],
            'json' => ['name' => 'Updated'],
        ]);

        $this->assertResponseIsSuccessful();
        $this->assertSame('Updated', $client->getResponse()->toArray()['name']);
    }

    public function testDelete(): void
    {
        $client = $this->createLoggedInClient();
        // ... create resource first
        $client->request('DELETE', '/orders/' . $id);
        $this->assertResponseStatusCodeSame(204);
    }
}

Testing Validation

public function testCreateWithInvalidData(): void
{
    $client = $this->createLoggedInClient();
    $client->request('POST', '/orders', [
        'json' => ['email' => 'not-valid'],
    ]);

    $this->assertResponseStatusCodeSame(422);
    $this->assertJsonContains([
        'violations' => [
            ['propertyPath' => 'email', 'message' => 'This value is not a valid email address.'],
        ],
    ]);
}

Testing Authentication

public function testRequiresAuthentication(): void
{
    // No auth headers — use raw createClient
    $client = static::createClient();

    $client->request('GET', '/orders');
    $this->assertResponseStatusCodeSame(401);
}

Multi-Tenant Isolation Tests

Test that users can only access their own resources:

public function testIsolationBetweenUsers(): void
{
    $client1 = $this->createLoggedInClient();       // User 1, Org 1
    $client2 = $this->createSecondUserClient();      // User 2, Org 2

    // User 1 creates a resource
    $client1->request('POST', '/accounts', [
        'headers' => ['Content-Type' => 'application/ld+json'],
        'json' => ['address' => 'user1@example.com', 'password' => 'Pass123!'],
    ]);
    $account = $client1->getResponse()->toArray();

    // User 2 cannot read it
    $client2->request('GET', '/accounts/' . $account['id']);
    $this->assertResponseStatusCodeSame(404);

    // User 2 cannot update it
    $client2->request('PATCH', '/accounts/' . $account['id'], [
        'headers' => ['Content-Type' => 'application/merge-patch+json'],
        'json' => ['isActive' => false],
    ]);
    $this->assertResponseStatusCodeSame(404);

    // User 2 cannot delete it
    $client2->request('DELETE', '/accounts/' . $account['id']);
    $this->assertResponseStatusCodeSame(404);

    // Collections are isolated
    $client2->request('GET', '/accounts');
    $collection = $client2->getResponse()->toArray();
    $ids = array_column($collection['member'], 'id');
    $this->assertNotContains($account['id'], $ids);
}

Testing Filters

public function testFilterByStatus(): void
{
    $client = $this->createLoggedInClient();
    // ... create test data with different statuses

    $client->request('GET', '/orders?isActive=true');
    $this->assertResponseIsSuccessful();
    $data = $client->getResponse()->toArray();

    foreach ($data['member'] as $order) {
        $this->assertTrue($order['isActive']);
    }
}

Common Assertions

$this->assertResponseIsSuccessful();
$this->assertResponseStatusCodeSame(201);
$this->assertJsonContains(['name' => 'Expected']);
$this->assertMatchesResourceItemJsonSchema(Order::class);
$this->assertMatchesResourceCollectionJsonSchema(Order::class);

Resetting the Schema Between Tests (ORM)

For a clean database per test, drop and recreate the schema in setUp(). API Platform's own suite uses an internal ApiPlatform\Tests\RecreateSchemaTrait — that namespace is not autoloaded in your app, so copy the mechanism rather than importing it:

use Doctrine\ORM\Tools\SchemaTool;

protected function setUp(): void
{
    parent::setUp();

    $manager = static::getContainer()->get('doctrine')->getManager();
    $metadata = $manager->getMetadataFactory()->getAllMetadata();

    $schemaTool = new SchemaTool($manager);
    $schemaTool->dropDatabase();
    $schemaTool->createSchema($metadata);
}

For MongoDB ODM, drop the collections via $manager->getSchemaManager()->dropDocumentCollection(...) instead.

Test File Location

Place tests in tests/Functional/ following the naming convention {ResourceName}Test.php.

Laravel

Laravel uses its own HTTP test client (PHPUnit Tests\TestCase or Pest), not ApiTestCase. API Platform ships ApiPlatform\Laravel\Test\ApiTestAssertionsTrait (adds assertJsonContains(), assertArraySubset(), getIriFromResource()). Use RefreshDatabase for isolation and model factories for fixtures (not Doctrine SchemaTool/fixtures).

<?php
namespace Tests\Feature;

use ApiPlatform\Laravel\Test\ApiTestAssertionsTrait;
use App\Models\Book;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Tests\TestCase;

class BooksTest extends TestCase
{
    use RefreshDatabase, ApiTestAssertionsTrait;

    public function testCreate(): void
    {
        $response = $this->postJson('/api/books', ['isbn' => '0099740915', 'title' => 'X']);
        $response->assertStatus(201);
        $this->assertJsonContains(['title' => 'X'], $response->json());

        $book = Book::factory()->create();
        $this->getJson($this->getIriFromResource($book))->assertStatus(200);
    }
}

Key deltas: request helpers are getJson/postJson/patchJson/deleteJson; assertions are $response->assertStatus(...), $response->assertHeader(...), $this->assertDatabaseMissing(...). assertJsonContains() takes the decoded body ($response->json()). Isolation/validation(422)/auth tests use the same status-code assertions; auth uses Sanctum/actingAs(), not custom headers. Pest is the default and wraps the same trait via uses(RefreshDatabase::class, ApiTestAssertionsTrait::class).