function BackendChainImplementationUnitTest::testDeleteTagsPropagation

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

File

core/tests/Drupal/Tests/Core/Cache/BackendChainImplementationUnitTest.php, line 215

Class

BackendChainImplementationUnitTest

Unit test of backend chain implementation specifics.

Namespace

Code

public function testDeleteTagsPropagation() {
    // Create two cache entries with the same tag and tag value.
    $this->chain
        ->set('test_cid_clear1', 'foo', Cache::PERMANENT, [
        'test_tag:2',
    ]);
    $this->chain
        ->set('test_cid_clear2', 'foo', Cache::PERMANENT, [
        '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
        ->invalidateTags([
        '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', Cache::PERMANENT, [
        'test_tag:1',
    ]);
    $this->chain
        ->set('test_cid_clear2', 'foo', Cache::PERMANENT, [
        'test_tag: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
        ->invalidateTags([
        'test_tag: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', Cache::PERMANENT, [
        'test_tag:1',
    ]);
    $this->chain
        ->set('test_cid_clear2', 'foo', Cache::PERMANENT, [
        'test_tag:2',
    ]);
    $this->chain
        ->set('test_cid_clear3', 'foo', Cache::PERMANENT, [
        'test_tag_foo: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
        ->invalidateTags([
        'test_tag_foo: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.');
}