public function BackendChainImplementationUnitTest::testDeleteTagsPropagation

Test that the delete tags operation is propagated to all backends in the chain.

File

drupal/core/tests/Drupal/Tests/Core/Cache/BackendChainImplementationUnitTest.php, line 238

Definition of Drupal\Tests\Core\Cache\BackendChainImplementationUnitTest.

Class

BackendChainImplementationUnitTest

Tests implementation-specific functionality of the BackendChain backend.

Namespace

Code

public function testDeleteTagsPropagation() {

  // Create two cache entries with the same tag and tag value.
  $this->chain
    ->set('test_cid_clear1', 'foo', CacheBackendInterface::CACHE_PERMANENT, array(
    'test_tag' => 2,
  ));
  $this->chain
    ->set('test_cid_clear2', 'foo', CacheBackendInterface::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
    ->deleteTags(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', CacheBackendInterface::CACHE_PERMANENT, array(
    'test_tag' => array(
      1,
    ),
  ));
  $this->chain
    ->set('test_cid_clear2', 'foo', CacheBackendInterface::CACHE_PERMANENT, array(
    'test_tag' => array(
      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
    ->deleteTags(array(
    'test_tag' => array(
      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', CacheBackendInterface::CACHE_PERMANENT, array(
    'test_tag' => array(
      1,
    ),
  ));
  $this->chain
    ->set('test_cid_clear2', 'foo', CacheBackendInterface::CACHE_PERMANENT, array(
    'test_tag' => array(
      2,
    ),
  ));
  $this->chain
    ->set('test_cid_clear3', 'foo', CacheBackendInterface::CACHE_PERMANENT, array(
    'test_tag_foo' => array(
      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
    ->deleteTags(array(
    'test_tag_foo' => array(
      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.');
}