class BundleClassTest

class BundleClassTest extends EntityKernelTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'entity_test_bundle_class',
    ];
    
    /**
     * The entity storage.
     *
     * @var \Drupal\Core\Entity\EntityStorageInterface
     */
    protected $storage;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->storage = $this->entityTypeManager
            ->getStorage('entity_test');
    }
    
    /**
     * Tests making use of a custom bundle class.
     */
    public function testEntitySubclass() : void {
        entity_test_create_bundle('bundle_class');
        // Ensure we start life with empty counters.
        $this->assertEquals(0, EntityTestBundleClass::$preCreateCount);
        $this->assertEquals(0, EntityTestBundleClass::$preDeleteCount);
        $this->assertEquals(0, EntityTestBundleClass::$postDeleteCount);
        $this->assertEquals(0, EntityTestBundleClass::$postLoadCount);
        $this->assertCount(0, EntityTestBundleClass::$postLoadEntitiesCount);
        // Verify statically created entity with bundle class returns correct class.
        $entity = EntityTestBundleClass::create();
        $this->assertInstanceOf(EntityTestBundleClass::class, $entity);
        // Verify that bundle returns bundle_class when create is called without
        // passing a bundle.
        $this->assertSame($entity->bundle(), 'bundle_class');
        // Check that both preCreate() and postCreate() were called once.
        $this->assertEquals(1, EntityTestBundleClass::$preCreateCount);
        $this->assertEquals(1, $entity->postCreateCount);
        // Verify that none of the other methods have been invoked.
        $this->assertEquals(0, EntityTestBundleClass::$preDeleteCount);
        $this->assertEquals(0, EntityTestBundleClass::$postDeleteCount);
        $this->assertEquals(0, EntityTestBundleClass::$postLoadCount);
        $this->assertCount(0, EntityTestBundleClass::$postLoadEntitiesCount);
        // Verify statically created entity with bundle class returns correct
        // bundle.
        $entity = EntityTestBundleClass::create([
            'type' => 'custom',
        ]);
        $this->assertInstanceOf(EntityTestBundleClass::class, $entity);
        $this->assertEquals('bundle_class', $entity->bundle());
        // We should have seen preCreate() a 2nd time.
        $this->assertEquals(2, EntityTestBundleClass::$preCreateCount);
        // postCreate() is specific to each entity instance, so still 1.
        $this->assertEquals(1, $entity->postCreateCount);
        // Verify that none of the other methods have been invoked.
        $this->assertEquals(0, EntityTestBundleClass::$preDeleteCount);
        $this->assertEquals(0, EntityTestBundleClass::$postDeleteCount);
        $this->assertEquals(0, EntityTestBundleClass::$postLoadCount);
        $this->assertCount(0, EntityTestBundleClass::$postLoadEntitiesCount);
        // Verify that the entity storage creates the entity using the proper class.
        $entity = $this->storage
            ->create([
            'type' => 'bundle_class',
        ]);
        $this->assertInstanceOf(EntityTestBundleClass::class, $entity);
        // We should have seen preCreate() a 3rd time.
        $this->assertEquals(3, EntityTestBundleClass::$preCreateCount);
        $this->assertEquals(1, $entity->postCreateCount);
        // Nothing else has been invoked.
        $this->assertEquals(0, EntityTestBundleClass::$preDeleteCount);
        $this->assertEquals(0, EntityTestBundleClass::$postDeleteCount);
        $this->assertEquals(0, EntityTestBundleClass::$postLoadCount);
        $this->assertCount(0, EntityTestBundleClass::$postLoadEntitiesCount);
        // Verify that loading an entity returns the proper class.
        $entity->save();
        $id = $entity->id();
        $this->storage
            ->resetCache();
        $entity = $this->storage
            ->load($id);
        $this->assertInstanceOf(EntityTestBundleClass::class, $entity);
        // Loading an existing entity shouldn't call preCreate() nor postCreate().
        $this->assertEquals(3, EntityTestBundleClass::$preCreateCount);
        $this->assertEquals(0, $entity->postCreateCount);
        // Nothing has been deleted.
        $this->assertEquals(0, EntityTestBundleClass::$preDeleteCount);
        $this->assertEquals(0, EntityTestBundleClass::$postDeleteCount);
        // We should now have seen postLoad() called once.
        $this->assertEquals(1, EntityTestBundleClass::$postLoadCount);
        // It should have been invoked with a single entity.
        $this->assertCount(1, EntityTestBundleClass::$postLoadEntitiesCount);
        $this->assertEquals(1, EntityTestBundleClass::$postLoadEntitiesCount[0]);
        // Create additional entities to test invocations during loadMultiple().
        $entity_2 = $this->storage
            ->create([
            'type' => 'bundle_class',
        ]);
        $entity_2->save();
        $this->assertEquals(4, EntityTestBundleClass::$preCreateCount);
        $entity_3 = $this->storage
            ->create([
            'type' => 'bundle_class',
        ]);
        $entity_3->save();
        $this->assertEquals(5, EntityTestBundleClass::$preCreateCount);
        // Make another bundle that does not have a bundle subclass.
        entity_test_create_bundle('entity_test');
        $entity_test_1 = $this->storage
            ->create([
            'type' => 'entity_test',
        ]);
        $entity_test_1->save();
        // EntityTestBundleClass::preCreate() should not have been called.
        $this->assertEquals(5, EntityTestBundleClass::$preCreateCount);
        $entity_test_2 = $this->storage
            ->create([
            'type' => 'entity_test',
        ]);
        $entity_test_2->save();
        // EntityTestBundleClass::preCreate() should still not have been called.
        $this->assertEquals(5, EntityTestBundleClass::$preCreateCount);
        // Try calling loadMultiple().
        $entity_ids = [
            $entity->id(),
            $entity_2->id(),
            $entity_3->id(),
            $entity_test_1->id(),
            $entity_test_2->id(),
        ];
        $entities = $this->storage
            ->loadMultiple($entity_ids);
        // postLoad() should only have been called once more so far.
        $this->assertEquals(2, EntityTestBundleClass::$postLoadCount);
        $this->assertCount(2, EntityTestBundleClass::$postLoadEntitiesCount);
        // Only 3 of the 5 entities we just loaded use the bundle class. However,
        // one of them has already been loaded and we're getting the cached entity
        // without re-invoking postLoad(). So the custom postLoad() method should
        // only have been invoked with 2 entities.
        $this->assertEquals(2, EntityTestBundleClass::$postLoadEntitiesCount[1]);
        // Reset the storage cache and try loading again.
        $this->storage
            ->resetCache();
        $entities = $this->storage
            ->loadMultiple($entity_ids);
        $this->assertEquals(3, EntityTestBundleClass::$postLoadCount);
        $this->assertCount(3, EntityTestBundleClass::$postLoadEntitiesCount);
        // This time, all 3 bundle_class entities should be included.
        $this->assertEquals(3, EntityTestBundleClass::$postLoadEntitiesCount[2]);
        // Start deleting things and count delete-related method invocations.
        $entity_test_1->delete();
        // No entity using the bundle class has yet been deleted.
        $this->assertEquals(0, EntityTestBundleClass::$preDeleteCount);
        $this->assertEquals(0, EntityTestBundleClass::$postDeleteCount);
        $entity_test_2->delete();
        $this->assertEquals(0, EntityTestBundleClass::$preDeleteCount);
        $this->assertEquals(0, EntityTestBundleClass::$postDeleteCount);
        // Start deleting entities using the bundle class.
        $entity->delete();
        $this->assertEquals(1, EntityTestBundleClass::$preDeleteCount);
        $this->assertEquals(1, EntityTestBundleClass::$postDeleteCount);
        $entity_2->delete();
        $this->assertEquals(2, EntityTestBundleClass::$preDeleteCount);
        $this->assertEquals(2, EntityTestBundleClass::$postDeleteCount);
        // Verify that getEntityClass without bundle returns the default entity
        // class.
        $entity_class = $this->storage
            ->getEntityClass(NULL);
        $this->assertEquals(EntityTest::class, $entity_class);
        // Verify that getEntityClass with a bundle returns the proper class.
        $entity_class = $this->storage
            ->getEntityClass('bundle_class');
        $this->assertEquals(EntityTestBundleClass::class, $entity_class);
        // Verify that getEntityClass with a non-existing bundle returns the entity
        // class.
        $entity_class = $this->storage
            ->getEntityClass('custom');
        $this->assertEquals(EntityTest::class, $entity_class);
    }
    
    /**
     * Tests making use of a custom bundle class for an entity without bundles.
     */
    public function testEntityNoBundleSubclass() : void {
        $this->container
            ->get('state')
            ->set('entity_test_bundle_class_enable_user_class', TRUE);
        $this->container
            ->get('kernel')
            ->rebuildContainer();
        $this->entityTypeManager
            ->clearCachedDefinitions();
        $this->drupalSetUpCurrentUser();
        $entity = User::load(1);
        $this->assertInstanceOf(EntityTestUserClass::class, $entity);
    }
    
    /**
     * Checks exception is thrown if two bundles share the same bundle class.
     *
     * @covers Drupal\Core\Entity\ContentEntityStorageBase::create
     */
    public function testAmbiguousBundleClassExceptionCreate() : void {
        $this->container
            ->get('state')
            ->set('entity_test_bundle_class_enable_ambiguous_entity_types', TRUE);
        $this->entityTypeManager
            ->clearCachedDefinitions();
        entity_test_create_bundle('bundle_class');
        entity_test_create_bundle('bundle_class_2');
        // Since we now have two bundles trying to reuse the same class, we expect
        // this to throw an exception.
        $this->expectException(AmbiguousBundleClassException::class);
        EntityTestBundleClass::create();
    }
    
    /**
     * Checks exception is thrown if two entity types share the same bundle class.
     *
     * @covers Drupal\Core\Entity\EntityTypeRepository::getEntityTypeFromClass
     */
    public function testAmbiguousBundleClassExceptionEntityTypeRepository() : void {
        $this->container
            ->get('state')
            ->set('entity_test_bundle_class_enable_ambiguous_entity_types', TRUE);
        entity_test_create_bundle('entity_test_no_label');
        entity_test_create_bundle('entity_test_no_label', NULL, 'entity_test_no_label');
        // Now that we have an entity bundle class that's shared by two entirely
        // different entity types, we expect an exception to be thrown.
        $this->expectException(AmbiguousBundleClassException::class);
        $entity_type = $this->container
            ->get('entity_type.repository')
            ->getEntityTypeFromClass(EntityTestAmbiguousBundleClass::class);
    }
    
    /**
     * Checks that no exception is thrown when two bundles share an entity class.
     *
     * @covers Drupal\Core\Entity\EntityTypeRepository::getEntityTypeFromClass
     */
    public function testNoAmbiguousBundleClassExceptionSharingEntityClass() : void {
        $shared_type_a = $this->container
            ->get('entity_type.repository')
            ->getEntityTypeFromClass(SharedEntityTestBundleClassA::class);
        $shared_type_b = $this->container
            ->get('entity_type.repository')
            ->getEntityTypeFromClass(SharedEntityTestBundleClassB::class);
        $this->assertSame('shared_type', $shared_type_a);
        $this->assertSame('shared_type', $shared_type_b);
    }
    
    /**
     * Checks exception thrown if a bundle class doesn't extend the entity class.
     */
    public function testBundleClassShouldExtendEntityClass() : void {
        $this->container
            ->get('state')
            ->set('entity_test_bundle_class_non_inheriting', TRUE);
        $this->entityTypeManager
            ->clearCachedDefinitions();
        $this->expectException(BundleClassInheritanceException::class);
        entity_test_create_bundle('bundle_class');
        $this->storage
            ->create([
            'type' => 'bundle_class',
        ]);
    }
    
    /**
     * Checks exception thrown if a bundle class doesn't exist.
     */
    public function testBundleClassShouldExist() : void {
        $this->container
            ->get('state')
            ->set('entity_test_bundle_class_does_not_exist', TRUE);
        $this->entityTypeManager
            ->clearCachedDefinitions();
        $this->expectException(MissingBundleClassException::class);
        entity_test_create_bundle('bundle_class');
        $this->storage
            ->create([
            'type' => 'bundle_class',
        ]);
    }
    
    /**
     * Tests that a module can override an entity-type class.
     *
     * Ensures a module can implement hook_entity_info_alter() and alter the
     * entity's class without needing to write to the last installed
     * definitions repository.
     */
    public function testEntityClassNotTakenFromActiveDefinitions() : void {
        $this->container
            ->get('state')
            ->set('entity_test_bundle_class_override_base_class', TRUE);
        $this->entityTypeManager
            ->clearCachedDefinitions();
        $this->assertEquals(EntityTestVariant::class, $this->entityTypeManager
            ->getStorage('entity_test')
            ->getEntityClass());
    }

}