protected function BackendChainImplementationUnitTest::setUp in Drupal 10
Same name and namespace in other branches
- 8 core/tests/Drupal/Tests/Core/Cache/BackendChainImplementationUnitTest.php \Drupal\Tests\Core\Cache\BackendChainImplementationUnitTest::setUp()
- 9 core/tests/Drupal/Tests/Core/Cache/BackendChainImplementationUnitTest.php \Drupal\Tests\Core\Cache\BackendChainImplementationUnitTest::setUp()
Overrides UnitTestCase::setUp
File
- core/
tests/ Drupal/ Tests/ Core/ Cache/ BackendChainImplementationUnitTest.php, line 46
Class
- BackendChainImplementationUnitTest
- Unit test of backend chain implementation specifics.
Namespace
Drupal\Tests\Core\CacheCode
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);
}