function GenericCacheBackendUnitTestBase::testInvalidate

@covers \Drupal\Core\Cache\ApcuBackend::getMultiple
@covers \Drupal\Core\Cache\BackendChain::getMultiple
@covers \Drupal\Core\Cache\ChainedFastBackend::getMultiple
@covers \Drupal\Core\Cache\DatabaseBackend::getMultiple
@covers \Drupal\Core\Cache\MemoryBackend::getMultiple
@covers \Drupal\Core\Cache\PhpBackend::getMultiple
@covers \Drupal\Core\Cache\ApcuBackend::invalidateMultiple
@covers \Drupal\Core\Cache\BackendChain::invalidateMultiple
@covers \Drupal\Core\Cache\ChainedFastBackend::invalidateMultiple
@covers \Drupal\Core\Cache\DatabaseBackend::invalidateMultiple
@covers \Drupal\Core\Cache\MemoryBackend::invalidateMultiple
@covers \Drupal\Core\Cache\PhpBackend::invalidateMultiple

File

core/tests/Drupal/KernelTests/Core/Cache/GenericCacheBackendUnitTestBase.php, line 541

Class

GenericCacheBackendUnitTestBase

Tests any cache backend.

Namespace

Code

public function testInvalidate() : void {
  $backend = $this->getCacheBackend();
  $backend->set('test1', 1);
  $backend->set('test2', 2);
  $backend->set('test3', 2);
  $backend->set('test4', 2);
  $reference = [
    'test1',
    'test2',
    'test3',
    'test4',
  ];
  $cids = $reference;
  $ret = $backend->getMultiple($cids);
  $this->assertCount(4, $ret, 'Four items returned.');
  $backend->invalidate('test1');
  $backend->invalidateMultiple([
    'test2',
    'test3',
  ]);
  $cids = $reference;
  $ret = $backend->getMultiple($cids);
  $this->assertCount(1, $ret, 'Only one item element returned.');
  $cids = $reference;
  $ret = $backend->getMultiple($cids, TRUE);
  $this->assertCount(4, $ret, 'Four items returned.');
  // Calling invalidateMultiple() with an empty array should not cause an
  // error.
  $this->assertNull($backend->invalidateMultiple([]));
}