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class BackendChainImplementationUnitTest in Zircon Profile 8

Same name and namespace in other branches
  1. 8.0 core/tests/Drupal/Tests/Core/Cache/BackendChainImplementationUnitTest.php \Drupal\Tests\Core\Cache\BackendChainImplementationUnitTest

Unit test of backend chain implementation specifics.

@group Cache

Hierarchy

Expanded class hierarchy of BackendChainImplementationUnitTest

File

core/tests/Drupal/Tests/Core/Cache/BackendChainImplementationUnitTest.php, line 20
Contains \Drupal\Tests\Core\Cache\BackendChainImplementationUnitTest.

Namespace

Drupal\Tests\Core\Cache
View source 
class BackendChainImplementationUnitTest extends UnitTestCase {

  /**
   * Chain that will be heavily tested.
   *
   * @var \Drupal\Core\Cache\BackendChain
   */
  protected $chain;

  /**
   * First backend in the chain.
   *
   * @var \Drupal\Core\Cache\CacheBackendInterface
   */
  protected $firstBackend;

  /**
   * Second backend in the chain.
   *
   * @var \Drupal\Core\Cache\CacheBackendInterface
   */
  protected $secondBackend;

  /**
   * Third backend in the chain.
   *
   * @var \Drupal\Core\Cache\CacheBackendInterface
   */
  protected $thirdBackend;
  protected function setUp() {
    parent::setUp();

    // Set up three memory backends to be used in the chain.
    $this->firstBackend = new MemoryBackend('foo');
    $this->secondBackend = new MemoryBackend('bar');
    $this->thirdBackend = new MemoryBackend('baz');

    // Set an initial fixed dataset for all testing. The next three data
    // collections will test two edge cases (last backend has the data, and
    // first backend has the data) and will test a normal use case (middle
    // backend has the data). We should have a complete unit test with those.
    // Note that in all cases, when the same key is set on more than one
    // backend, the values are voluntarily different, this ensures in which
    // backend we actually fetched the key when doing get calls.
    // Set a key present on all backends (for delete).
    $this->firstBackend
      ->set('t123', 1231);
    $this->secondBackend
      ->set('t123', 1232);
    $this->thirdBackend
      ->set('t123', 1233);

    // Set a key present on the second and the third (for get), those two will
    // be different, this will ensure from where we get the key.
    $this->secondBackend
      ->set('t23', 232);
    $this->thirdBackend
      ->set('t23', 233);

    // Set a key on only the third, we will ensure propagation using this one.
    $this->thirdBackend
      ->set('t3', 33);

    // Create the chain.
    $this->chain = new BackendChain('foobarbaz');
    $this->chain
      ->appendBackend($this->firstBackend)
      ->appendBackend($this->secondBackend)
      ->appendBackend($this->thirdBackend);
  }

  /**
   * Test the get feature.
   */
  public function testGet() {
    $cached = $this->chain
      ->get('t123');
    $this
      ->assertNotSame(FALSE, $cached, 'Got key that is on all backends');
    $this
      ->assertSame(1231, $cached->data, 'Got the key from the backend 1');
    $cached = $this->chain
      ->get('t23');
    $this
      ->assertNotSame(FALSE, $cached, 'Got key that is on backends 2 and 3');
    $this
      ->assertSame(232, $cached->data, 'Got the key from the backend 2');
    $cached = $this->chain
      ->get('t3');
    $this
      ->assertNotSame(FALSE, $cached, 'Got key that is on the backend 3');
    $this
      ->assertSame(33, $cached->data, 'Got the key from the backend 3');
  }

  /**
   * Test the get multiple feature.
   */
  public function testGetMultiple() {
    $cids = array(
      't123',
      't23',
      't3',
      't4',
    );
    $ret = $this->chain
      ->getMultiple($cids);
    $this
      ->assertSame($ret['t123']->data, 1231, 'Got key 123 and value is from the first backend');
    $this
      ->assertSame($ret['t23']->data, 232, 'Got key 23 and value is from the second backend');
    $this
      ->assertSame($ret['t3']->data, 33, 'Got key 3 and value is from the third backend');
    $this
      ->assertFalse(array_key_exists('t4', $ret), "Didn't get the nonexistent key");
    $this
      ->assertFalse(in_array('t123', $cids), "Existing key 123 has been removed from &\$cids");
    $this
      ->assertFalse(in_array('t23', $cids), "Existing key 23 has been removed from &\$cids");
    $this
      ->assertFalse(in_array('t3', $cids), "Existing key 3 has been removed from &\$cids");
    $this
      ->assertTrue(in_array('t4', $cids), "Non existing key 4 is still in &\$cids");
  }

  /**
   * Test that set will propagate.
   */
  public function testSet() {
    $this->chain
      ->set('test', 123);
    $cached = $this->firstBackend
      ->get('test');
    $this
      ->assertNotSame(FALSE, $cached, 'Test key is in the first backend');
    $this
      ->assertSame(123, $cached->data, 'Test key has the right value');
    $cached = $this->secondBackend
      ->get('test');
    $this
      ->assertNotSame(FALSE, $cached, 'Test key is in the second backend');
    $this
      ->assertSame(123, $cached->data, 'Test key has the right value');
    $cached = $this->thirdBackend
      ->get('test');
    $this
      ->assertNotSame(FALSE, $cached, 'Test key is in the third backend');
    $this
      ->assertSame(123, $cached->data, 'Test key has the right value');
  }

  /**
   * Test that delete will propagate.
   */
  public function testDelete() {
    $this->chain
      ->set('test', 5);
    $cached = $this->firstBackend
      ->get('test');
    $this
      ->assertNotSame(FALSE, $cached, 'Test key has been added to the first backend');
    $cached = $this->secondBackend
      ->get('test');
    $this
      ->assertNotSame(FALSE, $cached, 'Test key has been added to the first backend');
    $cached = $this->thirdBackend
      ->get('test');
    $this
      ->assertNotSame(FALSE, $cached, 'Test key has been added to the first backend');
    $this->chain
      ->delete('test');
    $cached = $this->firstBackend
      ->get('test');
    $this
      ->assertSame(FALSE, $cached, 'Test key is removed from the first backend');
    $cached = $this->secondBackend
      ->get('test');
    $this
      ->assertSame(FALSE, $cached, 'Test key is removed from the second backend');
    $cached = $this->thirdBackend
      ->get('test');
    $this
      ->assertSame(FALSE, $cached, 'Test key is removed from the third backend');
  }

  /**
   * Ensure get values propagation to previous backends.
   */
  public function testGetHasPropagated() {
    $this->chain
      ->get('t23');
    $cached = $this->firstBackend
      ->get('t23');
    $this
      ->assertNotSame(FALSE, $cached, 'Test 2 has been propagated to the first backend');
    $this->chain
      ->get('t3');
    $cached = $this->firstBackend
      ->get('t3');
    $this
      ->assertNotSame(FALSE, $cached, 'Test 3 has been propagated to the first backend');
    $cached = $this->secondBackend
      ->get('t3');
    $this
      ->assertNotSame(FALSE, $cached, 'Test 3 has been propagated to the second backend');
  }

  /**
   * Ensure get multiple values propagation to previous backends.
   */
  public function testGetMultipleHasPropagated() {
    $cids = array(
      't3',
      't23',
    );
    $this->chain
      ->getMultiple($cids);
    $cached = $this->firstBackend
      ->get('t3');
    $this
      ->assertNotSame(FALSE, $cached, 'Test 3 has been propagated to the first backend');
    $this
      ->assertSame(33, $cached->data, 'And value has been kept');
    $cached = $this->secondBackend
      ->get('t3');
    $this
      ->assertNotSame(FALSE, $cached, 'Test 3 has been propagated to the second backend');
    $this
      ->assertSame(33, $cached->data, 'And value has been kept');
    $cached = $this->firstBackend
      ->get('t23');
    $this
      ->assertNotSame(FALSE, $cached, 'Test 2 has been propagated to the first backend');
    $this
      ->assertSame(232, $cached->data, 'And value has been kept');
  }

  /**
   * Test that the delete all operation is propagated to all backends in the chain.
   */
  public function testDeleteAllPropagation() {

    // Set both expiring and permanent keys.
    $this->chain
      ->set('test1', 1, Cache::PERMANENT);
    $this->chain
      ->set('test2', 3, time() + 1000);
    $this->chain
      ->deleteAll();
    $this
      ->assertFalse($this->firstBackend
      ->get('test1'), 'First key has been deleted in first backend.');
    $this
      ->assertFalse($this->firstBackend
      ->get('test2'), 'Second key has been deleted in first backend.');
    $this
      ->assertFalse($this->secondBackend
      ->get('test1'), 'First key has been deleted in second backend.');
    $this
      ->assertFalse($this->secondBackend
      ->get('test2'), 'Second key has been deleted in second backend.');
    $this
      ->assertFalse($this->thirdBackend
      ->get('test1'), 'First key has been deleted in third backend.');
    $this
      ->assertFalse($this->thirdBackend
      ->get('test2'), 'Second key has been deleted in third backend.');
  }

  /**
   * Test that the delete tags operation is propagated to all backends
   * in the chain.
   */
  public function testDeleteTagsPropagation() {

    // Create two cache entries with the same tag and tag value.
    $this->chain
      ->set('test_cid_clear1', 'foo', Cache::PERMANENT, array(
      'test_tag:2',
    ));
    $this->chain
      ->set('test_cid_clear2', 'foo', Cache::PERMANENT, array(
      'test_tag:2',
    ));
    $this
      ->assertNotSame(FALSE, $this->firstBackend
      ->get('test_cid_clear1') && $this->firstBackend
      ->get('test_cid_clear2') && $this->secondBackend
      ->get('test_cid_clear1') && $this->secondBackend
      ->get('test_cid_clear2') && $this->thirdBackend
      ->get('test_cid_clear1') && $this->thirdBackend
      ->get('test_cid_clear2'), 'Two cache items were created in all backends.');

    // Invalidate test_tag of value 1. This should invalidate both entries.
    $this->chain
      ->invalidateTags(array(
      'test_tag:2',
    ));
    $this
      ->assertSame(FALSE, $this->firstBackend
      ->get('test_cid_clear1') && $this->firstBackend
      ->get('test_cid_clear2') && $this->secondBackend
      ->get('test_cid_clear1') && $this->secondBackend
      ->get('test_cid_clear2') && $this->thirdBackend
      ->get('test_cid_clear1') && $this->thirdBackend
      ->get('test_cid_clear2'), 'Two caches removed from all backends after clearing a cache tag.');

    // Create two cache entries with the same tag and an array tag value.
    $this->chain
      ->set('test_cid_clear1', 'foo', Cache::PERMANENT, array(
      'test_tag:1',
    ));
    $this->chain
      ->set('test_cid_clear2', 'foo', Cache::PERMANENT, array(
      'test_tag:1',
    ));
    $this
      ->assertNotSame(FALSE, $this->firstBackend
      ->get('test_cid_clear1') && $this->firstBackend
      ->get('test_cid_clear2') && $this->secondBackend
      ->get('test_cid_clear1') && $this->secondBackend
      ->get('test_cid_clear2') && $this->thirdBackend
      ->get('test_cid_clear1') && $this->thirdBackend
      ->get('test_cid_clear2'), 'Two cache items were created in all backends.');

    // Invalidate test_tag of value 1. This should invalidate both entries.
    $this->chain
      ->invalidateTags(array(
      'test_tag:1',
    ));
    $this
      ->assertSame(FALSE, $this->firstBackend
      ->get('test_cid_clear1') && $this->firstBackend
      ->get('test_cid_clear2') && $this->secondBackend
      ->get('test_cid_clear1') && $this->secondBackend
      ->get('test_cid_clear2') && $this->thirdBackend
      ->get('test_cid_clear1') && $this->thirdBackend
      ->get('test_cid_clear2'), 'Two caches removed from all backends after clearing a cache tag.');

    // Create three cache entries with a mix of tags and tag values.
    $this->chain
      ->set('test_cid_clear1', 'foo', Cache::PERMANENT, array(
      'test_tag:1',
    ));
    $this->chain
      ->set('test_cid_clear2', 'foo', Cache::PERMANENT, array(
      'test_tag:2',
    ));
    $this->chain
      ->set('test_cid_clear3', 'foo', Cache::PERMANENT, array(
      'test_tag_foo:3',
    ));
    $this
      ->assertNotSame(FALSE, $this->firstBackend
      ->get('test_cid_clear1') && $this->firstBackend
      ->get('test_cid_clear2') && $this->firstBackend
      ->get('test_cid_clear3') && $this->secondBackend
      ->get('test_cid_clear1') && $this->secondBackend
      ->get('test_cid_clear2') && $this->secondBackend
      ->get('test_cid_clear3') && $this->thirdBackend
      ->get('test_cid_clear1') && $this->thirdBackend
      ->get('test_cid_clear2') && $this->thirdBackend
      ->get('test_cid_clear3'), 'Three cached items were created in all backends.');
    $this->chain
      ->invalidateTags(array(
      'test_tag_foo:3',
    ));
    $this
      ->assertNotSame(FALSE, $this->firstBackend
      ->get('test_cid_clear1') && $this->firstBackend
      ->get('test_cid_clear2') && $this->secondBackend
      ->get('test_cid_clear1') && $this->secondBackend
      ->get('test_cid_clear2') && $this->thirdBackend
      ->get('test_cid_clear1') && $this->thirdBackend
      ->get('test_cid_clear2'), 'Cached items not matching the tag were not cleared from any of the backends.');
    $this
      ->assertSame(FALSE, $this->firstBackend
      ->get('test_cid_clear3') && $this->secondBackend
      ->get('test_cid_clear3') && $this->thirdBackend
      ->get('test_cid_clear3'), 'Cached item matching the tag was removed from all backends.');
  }

  /**
   * Test that removing bin propagates to all backends.
   */
  public function testRemoveBin() {
    $chain = new BackendChain('foo');
    for ($i = 0; $i < 3; $i++) {
      $backend = $this
        ->getMock('Drupal\\Core\\Cache\\CacheBackendInterface');
      $backend
        ->expects($this
        ->once())
        ->method('removeBin');
      $chain
        ->appendBackend($backend);
    }
    $chain
      ->removeBin();
  }

}

Members

Namesort descending Modifiers Type Description Overrides
BackendChainImplementationUnitTest::$chain protected property Chain that will be heavily tested.
BackendChainImplementationUnitTest::$firstBackend protected property First backend in the chain.
BackendChainImplementationUnitTest::$secondBackend protected property Second backend in the chain.
BackendChainImplementationUnitTest::$thirdBackend protected property Third backend in the chain.
BackendChainImplementationUnitTest::setUp protected function Overrides UnitTestCase::setUp
BackendChainImplementationUnitTest::testDelete public function Test that delete will propagate.
BackendChainImplementationUnitTest::testDeleteAllPropagation public function Test that the delete all operation is propagated to all backends in the chain.
BackendChainImplementationUnitTest::testDeleteTagsPropagation public function Test that the delete tags operation is propagated to all backends in the chain.
BackendChainImplementationUnitTest::testGet public function Test the get feature.
BackendChainImplementationUnitTest::testGetHasPropagated public function Ensure get values propagation to previous backends.
BackendChainImplementationUnitTest::testGetMultiple public function Test the get multiple feature.
BackendChainImplementationUnitTest::testGetMultipleHasPropagated public function Ensure get multiple values propagation to previous backends.
BackendChainImplementationUnitTest::testRemoveBin public function Test that removing bin propagates to all backends.
BackendChainImplementationUnitTest::testSet public function Test that set will propagate.
UnitTestCase::$randomGenerator protected property The random generator.
UnitTestCase::$root protected property The app root.
UnitTestCase::assertArrayEquals protected function Asserts if two arrays are equal by sorting them first.
UnitTestCase::getBlockMockWithMachineName protected function Mocks a block with a block plugin.
UnitTestCase::getClassResolverStub protected function Returns a stub class resolver.
UnitTestCase::getConfigFactoryStub public function Returns a stub config factory that behaves according to the passed in array.
UnitTestCase::getConfigStorageStub public function Returns a stub config storage that returns the supplied configuration.
UnitTestCase::getContainerWithCacheTagsInvalidator protected function Sets up a container with a cache tags invalidator.
UnitTestCase::getRandomGenerator protected function Gets the random generator for the utility methods.
UnitTestCase::getStringTranslationStub public function Returns a stub translation manager that just returns the passed string.
UnitTestCase::randomMachineName public function Generates a unique random string containing letters and numbers.