function EntityApiTest::testLazyPreLoading

Test lazy preloading.

File

core/tests/Drupal/KernelTests/Core/Entity/EntityApiTest.php, line 149

Class

EntityApiTest

Tests basic CRUD functionality.

Namespace

Code

public function testLazyPreLoading() : void {
  $storage = $this->container
    ->get('entity_type.manager')
    ->getStorage('entity_test');
  $ids = [];
  $entity = $storage->create([
    'name' => 'test',
  ]);
  $entity->save();
  $ids[] = $entity->id();
  $entity = $storage->create([
    'name' => 'test2',
  ]);
  $entity->save();
  $ids[] = $entity->id();
  $fiber1 = new \Fiber(fn() => $storage->load($ids[0]));
  $fiber2 = new \Fiber(fn() => $storage->load($ids[1]));
  // Make sure the entity cache is empty.
  $this->container
    ->get('entity.memory_cache')
    ->reset();
  // Start Fiber 1, this should set the first entity to be loaded, without
  // actually loading it, and then suspend.
  $fiber1->start();
  $this->assertTrue($fiber1->isSuspended());
  $this->assertFalse($this->container
    ->get('entity.memory_cache')
    ->get('values:entity_test:' . $ids[0]));
  // Start Fiber 2, this should set the first entity to be loaded, without
  // actually loading it, and then suspend.
  $fiber2->start();
  $this->assertTrue($fiber2->isSuspended());
  $this->assertFalse($this->container
    ->get('entity.memory_cache')
    ->get('values:entity_test:' . $ids[1]));
  $fiber2->resume();
  $this->assertTrue($fiber2->isTerminated());
  $this->assertSame($fiber2->getReturn()
    ->id(), $ids[1]);
  // Now both entities should be loaded.
  $this->assertNotFalse($this->container
    ->get('entity.memory_cache')
    ->get('values:entity_test:' . $ids[0]));
  $this->assertNotFalse($this->container
    ->get('entity.memory_cache')
    ->get('values:entity_test:' . $ids[1]));
  $fiber1->resume();
  $this->assertTrue($fiber1->isTerminated());
  $this->assertSame($fiber1->getReturn()
    ->id(), $ids[0]);
}