public function CacheDecoratorTest::testCachedDefinitions

Tests that discovered definitions are properly cached.

This comes in addition to DiscoveryTestBase::testDiscoveryInterface(), that test the basic discovery behavior.

File

drupal/core/modules/system/lib/Drupal/system/Tests/Plugin/CacheDecoratorTest.php, line 83

Contains \Drupal\system\Tests\Plugin\CacheDecoratorTest.

Class

CacheDecoratorTest

Tests \Drupal\Core\Plugin\Discovery\CacheDecorator behavior.

Namespace

Code

public function testCachedDefinitions() {
  $cache = cache($this->cacheBin);

  // Check that nothing is cached initially.
  $cached = $cache
    ->get($this->cacheKey);
  $this
    ->assertIdentical($cached, FALSE, 'Cache is empty.');

  // Get the definitions once, and check that they are present in the cache.
  $definitions = $this->discovery
    ->getDefinitions();
  $this
    ->assertIdentical($definitions, $this->expectedDefinitions, 'Definitions are correctly retrieved.');
  $cached = $cache
    ->get($this->cacheKey);
  $this
    ->assertIdentical($cached->data, $this->expectedDefinitions, 'Definitions are cached.');

  // Check that the definitions are also cached in memory. Since the
  // CacheDecorator::definitions property is protected, this is tested "from
  // the outside" by wiping the cache entry, getting the definitions, and
  // checking that the cache entry was not regenerated (thus showing that
  // defintions were not fetched from the decorated discovery).
  $cache
    ->delete($this->cacheKey);
  $definitions = $this->discovery
    ->getDefinitions();
  $cached = $cache
    ->get($this->cacheKey);
  $this
    ->assertIdentical($cached, FALSE, 'Cache is empty.');
  $this
    ->assertIdentical($definitions, $this->expectedDefinitions, 'Definitions are cached in memory.');
}