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| Current File : //var/www/html1/rrr/web/core/tests/Drupal/Tests/Core/Cache/BackendChainImplementationUnitTest.php |
<?php
namespace Drupal\Tests\Core\Cache;
use Drupal\Core\Cache\BackendChain;
use Drupal\Core\Cache\Cache;
use Drupal\Core\Cache\MemoryBackend;
use Drupal\Tests\UnitTestCase;
/**
* Unit test of backend chain implementation specifics.
*
* @group Cache
* @coversDefaultClass \Drupal\Core\Cache\BackendChain
*/
class BackendChainImplementationUnitTest extends UnitTestCase {
/**
* Chain that will be heavily tested.
*
* @var \Drupal\Core\Cache\BackendChain
*/
protected $chain;
/**
* First backend in the chain.
*
* @var \Drupal\Core\Cache\CacheBackendInterface
*/
protected $firstBackend;
/**
* Second backend in the chain.
*
* @var \Drupal\Core\Cache\CacheBackendInterface
*/
protected $secondBackend;
/**
* Third backend in the chain.
*
* @var \Drupal\Core\Cache\CacheBackendInterface
*/
protected $thirdBackend;
protected function setUp(): void {
parent::setUp();
// Set up three memory backends to be used in the chain.
$this->firstBackend = new MemoryBackend();
$this->secondBackend = new MemoryBackend();
$this->thirdBackend = new MemoryBackend();
// Set an initial fixed dataset for all testing. The next three data
// collections will test two edge cases (last backend has the data, and
// first backend has the data) and will test a normal use case (middle
// backend has the data). We should have a complete unit test with those.
// Note that in all cases, when the same key is set on more than one
// backend, the values are voluntarily different, this ensures in which
// backend we actually fetched the key when doing get calls.
// Set a key present on all backends (for delete).
$this->firstBackend->set('t123', 1231);
$this->secondBackend->set('t123', 1232);
$this->thirdBackend->set('t123', 1233);
// Set a key present on the second and the third (for get), those two will
// be different, this will ensure from where we get the key.
$this->secondBackend->set('t23', 232);
$this->thirdBackend->set('t23', 233);
// Set a key on only the third, we will ensure propagation using this one.
$this->thirdBackend->set('t3', 33);
// Create the chain.
$this->chain = new BackendChain();
$this->chain
->appendBackend($this->firstBackend)
->appendBackend($this->secondBackend)
->appendBackend($this->thirdBackend);
}
/**
* Test the get feature.
*/
public function testGet() {
$cached = $this->chain->get('t123');
$this->assertNotFalse($cached, 'Got key that is on all backends');
$this->assertSame(1231, $cached->data, 'Got the key from the backend 1');
$cached = $this->chain->get('t23');
$this->assertNotFalse($cached, 'Got key that is on backends 2 and 3');
$this->assertSame(232, $cached->data, 'Got the key from the backend 2');
$cached = $this->chain->get('t3');
$this->assertNotFalse($cached, 'Got key that is on the backend 3');
$this->assertSame(33, $cached->data, 'Got the key from the backend 3');
}
/**
* Test the get multiple feature.
*/
public function testGetMultiple() {
$cids = ['t123', 't23', 't3', 't4'];
$ret = $this->chain->getMultiple($cids);
$this->assertSame($ret['t123']->data, 1231, 'Got key 123 and value is from the first backend');
$this->assertSame($ret['t23']->data, 232, 'Got key 23 and value is from the second backend');
$this->assertSame($ret['t3']->data, 33, 'Got key 3 and value is from the third backend');
$this->assertArrayNotHasKey('t4', $ret);
$this->assertNotContains('t123', $cids, "Existing key 123 has been removed from &\$cids");
$this->assertNotContains('t23', $cids, "Existing key 23 has been removed from &\$cids");
$this->assertNotContains('t3', $cids, "Existing key 3 has been removed from &\$cids");
$this->assertContains('t4', $cids, "Non existing key 4 is still in &\$cids");
}
/**
* Test that set will propagate.
*/
public function testSet() {
$this->chain->set('test', 123);
$cached = $this->firstBackend->get('test');
$this->assertNotFalse($cached, 'Test key is in the first backend');
$this->assertSame(123, $cached->data, 'Test key has the right value');
$cached = $this->secondBackend->get('test');
$this->assertNotFalse($cached, 'Test key is in the second backend');
$this->assertSame(123, $cached->data, 'Test key has the right value');
$cached = $this->thirdBackend->get('test');
$this->assertNotFalse($cached, 'Test key is in the third backend');
$this->assertSame(123, $cached->data, 'Test key has the right value');
}
/**
* Test that delete will propagate.
*/
public function testDelete() {
$this->chain->set('test', 5);
$cached = $this->firstBackend->get('test');
$this->assertNotFalse($cached, 'Test key has been added to the first backend');
$cached = $this->secondBackend->get('test');
$this->assertNotFalse($cached, 'Test key has been added to the first backend');
$cached = $this->thirdBackend->get('test');
$this->assertNotFalse($cached, 'Test key has been added to the first backend');
$this->chain->delete('test');
$cached = $this->firstBackend->get('test');
$this->assertFalse($cached, 'Test key is removed from the first backend');
$cached = $this->secondBackend->get('test');
$this->assertFalse($cached, 'Test key is removed from the second backend');
$cached = $this->thirdBackend->get('test');
$this->assertFalse($cached, 'Test key is removed from the third backend');
}
/**
* Ensure get values propagation to previous backends.
*/
public function testGetHasPropagated() {
$this->chain->get('t23');
$cached = $this->firstBackend->get('t23');
$this->assertNotFalse($cached, 'Test 2 has been propagated to the first backend');
$this->chain->get('t3');
$cached = $this->firstBackend->get('t3');
$this->assertNotFalse($cached, 'Test 3 has been propagated to the first backend');
$cached = $this->secondBackend->get('t3');
$this->assertNotFalse($cached, 'Test 3 has been propagated to the second backend');
}
/**
* Ensure get multiple values propagation to previous backends.
*/
public function testGetMultipleHasPropagated() {
$cids = ['t3', 't23'];
$this->chain->getMultiple($cids);
$cached = $this->firstBackend->get('t3');
$this->assertNotFalse($cached, 'Test 3 has been propagated to the first backend');
$this->assertSame(33, $cached->data, 'And value has been kept');
$cached = $this->secondBackend->get('t3');
$this->assertNotFalse($cached, 'Test 3 has been propagated to the second backend');
$this->assertSame(33, $cached->data, 'And value has been kept');
$cached = $this->firstBackend->get('t23');
$this->assertNotFalse($cached, 'Test 2 has been propagated to the first backend');
$this->assertSame(232, $cached->data, 'And value has been kept');
}
/**
* Test that the delete all operation is propagated to all backends in the chain.
*/
public function testDeleteAllPropagation() {
// Set both expiring and permanent keys.
$this->chain->set('test1', 1, Cache::PERMANENT);
$this->chain->set('test2', 3, time() + 1000);
$this->chain->deleteAll();
$this->assertFalse($this->firstBackend->get('test1'), 'First key has been deleted in first backend.');
$this->assertFalse($this->firstBackend->get('test2'), 'Second key has been deleted in first backend.');
$this->assertFalse($this->secondBackend->get('test1'), 'First key has been deleted in second backend.');
$this->assertFalse($this->secondBackend->get('test2'), 'Second key has been deleted in second backend.');
$this->assertFalse($this->thirdBackend->get('test1'), 'First key has been deleted in third backend.');
$this->assertFalse($this->thirdBackend->get('test2'), 'Second key has been deleted in third backend.');
}
/**
* Test that the delete tags operation is propagated to all backends
* in the chain.
*/
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']);
$this->assertNotFalse($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']);
$this->assertFalse($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']);
$this->assertNotFalse($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']);
$this->assertFalse($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']);
$this->assertNotFalse($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']);
$this->assertNotFalse($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.');
$this->assertFalse($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.');
}
/**
* Test that removing bin propagates to all backends.
*/
public function testRemoveBin() {
$chain = new BackendChain();
for ($i = 0; $i < 3; $i++) {
$backend = $this->createMock('Drupal\Core\Cache\CacheBackendInterface');
$backend->expects($this->once())->method('removeBin');
$chain->appendBackend($backend);
}
$chain->removeBin();
}
}