function GenericCacheBackendUnitTestBase::testInvalidate

Test Drupal\Core\Cache\CacheBackendInterface::invalidate() and Drupal\Core\Cache\CacheBackendInterface::invalidateMultiple().

File

core/tests/Drupal/KernelTests/Core/Cache/GenericCacheBackendUnitTestBase.php, line 499

Class

GenericCacheBackendUnitTestBase

Tests any cache backend.

Namespace

Code

public function testInvalidate() {
    $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([]));
}