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([]));
}