abstract class ConfigStorageTestBase in Drupal 10

Base class for testing storage operations.

All configuration storages are expected to behave identically in terms of reading, writing, listing, deleting, as well as error handling.

Therefore, storage tests use an uncommon test case class structure; the base class defines the test method(s) to execute, which are identical for all storages. The storage specific test case classes supply the necessary helper methods to interact with the raw/native storage directly.

Hierarchy

• class \Drupal\KernelTests\Core\Config\Storage\ConfigStorageTestBase extends \Drupal\KernelTests\KernelTestBase

File

core/tests/Drupal/KernelTests/Core/Config/Storage/ConfigStorageTestBase.php, line 19

Namespace

Drupal\KernelTests\Core\Config\Storage

abstract class ConfigStorageTestBase extends KernelTestBase {

  /**
   * @var \Drupal\Core\Config\StorageInterface
   */
  protected $storage;

  /**
   * @var \Drupal\Core\Config\StorageInterface
   */
  protected $invalidStorage;

  /**
   * Tests storage CRUD operations.
   *
   * @todo Coverage: Trigger PDOExceptions / Database exceptions.
   */
  public function testCRUD() {
    $name = 'config_test.storage';

    // Checking whether a non-existing name exists returns FALSE.
    $this
      ->assertFalse($this->storage
      ->exists($name));

    // Reading a non-existing name returns FALSE.
    $data = $this->storage
      ->read($name);
    $this
      ->assertFalse($data);

    // Writing data returns TRUE and the data has been written.
    $data = [
      'foo' => 'bar',
    ];
    $result = $this->storage
      ->write($name, $data);
    $this
      ->assertTrue($result);
    $raw_data = $this
      ->read($name);
    $this
      ->assertSame($data, $raw_data);

    // Checking whether an existing name exists returns TRUE.
    $this
      ->assertTrue($this->storage
      ->exists($name));

    // Writing the identical data again still returns TRUE.
    $result = $this->storage
      ->write($name, $data);
    $this
      ->assertTrue($result);

    // Listing all names returns all.
    $names = $this->storage
      ->listAll();
    $this
      ->assertContains('system.performance', $names);
    $this
      ->assertContains($name, $names);

    // Listing all names with prefix returns names with that prefix only.
    $names = $this->storage
      ->listAll('config_test.');
    $this
      ->assertNotContains('system.performance', $names);
    $this
      ->assertContains($name, $names);

    // Rename the configuration storage object.
    $new_name = 'config_test.storage_rename';
    $this->storage
      ->rename($name, $new_name);
    $raw_data = $this
      ->read($new_name);
    $this
      ->assertSame($data, $raw_data);

    // Rename it back so further tests work.
    $this->storage
      ->rename($new_name, $name);

    // Deleting an existing name returns TRUE.
    $result = $this->storage
      ->delete($name);
    $this
      ->assertTrue($result);

    // Deleting a non-existing name returns FALSE.
    $result = $this->storage
      ->delete($name);
    $this
      ->assertFalse($result);

    // Deleting all names with prefix deletes the appropriate data and returns
    // TRUE.
    $files = [
      'config_test.test.biff',
      'config_test.test.bang',
      'config_test.test.pow',
    ];
    foreach ($files as $name) {
      $this->storage
        ->write($name, $data);
    }

    // Test that deleting a prefix that returns no configuration returns FALSE
    // because nothing is deleted.
    $this
      ->assertFalse($this->storage
      ->deleteAll('some_thing_that_cannot_exist'));
    $result = $this->storage
      ->deleteAll('config_test.');
    $names = $this->storage
      ->listAll('config_test.');
    $this
      ->assertTrue($result);
    $this
      ->assertSame([], $names);

    // Test renaming an object that does not exist returns FALSE.
    $this
      ->assertFalse($this->storage
      ->rename('config_test.storage_does_not_exist', 'config_test.storage_does_not_exist_rename'));

    // Test renaming to an object that already returns FALSE.
    $data = [
      'foo' => 'bar',
    ];
    $this
      ->assertTrue($this->storage
      ->write($name, $data));
    $this
      ->assertFalse($this->storage
      ->rename('config_test.storage_does_not_exist', $name));
  }

  /**
   * Tests an invalid storage.
   */
  public function testInvalidStorage() {
    $name = 'config_test.storage';

    // Write something to the valid storage to prove that the storages do not
    // pollute one another.
    $data = [
      'foo' => 'bar',
    ];
    $result = $this->storage
      ->write($name, $data);
    $this
      ->assertTrue($result);
    $raw_data = $this
      ->read($name);
    $this
      ->assertSame($data, $raw_data);

    // Reading from a non-existing storage bin returns FALSE.
    $result = $this->invalidStorage
      ->read($name);
    $this
      ->assertFalse($result);

    // Deleting from a non-existing storage bin throws an exception.
    try {
      $this->invalidStorage
        ->delete($name);
      $this
        ->fail('Exception not thrown upon deleting from a non-existing storage bin.');
    } catch (\Exception $e) {

      // An exception occurred as expected; just continue.
    }

    // Listing on a non-existing storage bin returns an empty array.
    $result = $this->invalidStorage
      ->listAll();
    $this
      ->assertSame([], $result);

    // Getting all collections on a non-existing storage bin return an empty
    // array.
    $this
      ->assertSame([], $this->invalidStorage
      ->getAllCollectionNames());

    // Writing to a non-existing storage bin creates the bin.
    $this->invalidStorage
      ->write($name, [
      'foo' => 'bar',
    ]);
    $result = $this->invalidStorage
      ->read($name);
    $this
      ->assertSame([
      'foo' => 'bar',
    ], $result);
  }

  /**
   * Tests storage writing and reading data preserving data type.
   */
  public function testDataTypes() {
    $name = 'config_test.types';
    $data = [
      'array' => [],
      'boolean' => TRUE,
      'exp' => 1.2E+34,
      'float' => 3.14159,
      'hex' => 0xc,
      'int' => 99,
      'octal' => 0775,
      'string' => 'string',
      'string_int' => '1',
    ];
    $result = $this->storage
      ->write($name, $data);
    $this
      ->assertTrue($result);
    $read_data = $this->storage
      ->read($name);
    $this
      ->assertSame($data, $read_data);
  }

  /**
   * Tests that the storage supports collections.
   */
  public function testCollection() {
    $name = 'config_test.storage';
    $data = [
      'foo' => 'bar',
    ];
    $result = $this->storage
      ->write($name, $data);
    $this
      ->assertTrue($result);
    $this
      ->assertSame($data, $this->storage
      ->read($name));

    // Create configuration in a new collection.
    $new_storage = $this->storage
      ->createCollection('collection.sub.new');
    $this
      ->assertFalse($new_storage
      ->exists($name));
    $this
      ->assertEquals([], $new_storage
      ->listAll());
    $this
      ->assertFalse($new_storage
      ->delete($name));
    $this
      ->assertFalse($new_storage
      ->deleteAll('config_test.'));
    $this
      ->assertFalse($new_storage
      ->deleteAll());
    $this
      ->assertFalse($new_storage
      ->rename($name, 'config_test.another_name'));
    $new_storage
      ->write($name, $data);
    $this
      ->assertTrue($result);
    $this
      ->assertSame($data, $new_storage
      ->read($name));
    $this
      ->assertEquals([
      $name,
    ], $new_storage
      ->listAll());
    $this
      ->assertTrue($new_storage
      ->exists($name));
    $new_data = [
      'foo' => 'baz',
    ];
    $new_storage
      ->write($name, $new_data);
    $this
      ->assertTrue($result);
    $this
      ->assertSame($new_data, $new_storage
      ->read($name));

    // Create configuration in another collection.
    $another_storage = $this->storage
      ->createCollection('collection.sub.another');
    $this
      ->assertFalse($another_storage
      ->exists($name));
    $this
      ->assertEquals([], $another_storage
      ->listAll());
    $another_storage
      ->write($name, $new_data);
    $this
      ->assertTrue($result);
    $this
      ->assertSame($new_data, $another_storage
      ->read($name));
    $this
      ->assertEquals([
      $name,
    ], $another_storage
      ->listAll());
    $this
      ->assertTrue($another_storage
      ->exists($name));

    // Create configuration in yet another collection.
    $alt_storage = $this->storage
      ->createCollection('alternate');
    $alt_storage
      ->write($name, $new_data);
    $this
      ->assertTrue($result);
    $this
      ->assertSame($new_data, $alt_storage
      ->read($name));

    // Switch back to the collection-less mode and check the data still exists
    // add has not been touched.
    $this
      ->assertSame($data, $this->storage
      ->read($name));

    // Check that the getAllCollectionNames() method works.
    $this
      ->assertSame([
      'alternate',
      'collection.sub.another',
      'collection.sub.new',
    ], $this->storage
      ->getAllCollectionNames());

    // Check that the collections are removed when they are empty.
    $alt_storage
      ->delete($name);
    $this
      ->assertSame([
      'collection.sub.another',
      'collection.sub.new',
    ], $this->storage
      ->getAllCollectionNames());

    // Create configuration in collection called 'collection'. This ensures that
    // FileStorage's collection storage works regardless of its use of
    // subdirectories.
    $parent_storage = $this->storage
      ->createCollection('collection');
    $this
      ->assertFalse($parent_storage
      ->exists($name));
    $this
      ->assertEquals([], $parent_storage
      ->listAll());
    $parent_storage
      ->write($name, $new_data);
    $this
      ->assertTrue($result);
    $this
      ->assertSame($new_data, $parent_storage
      ->read($name));
    $this
      ->assertEquals([
      $name,
    ], $parent_storage
      ->listAll());
    $this
      ->assertTrue($parent_storage
      ->exists($name));
    $this
      ->assertSame([
      'collection',
      'collection.sub.another',
      'collection.sub.new',
    ], $this->storage
      ->getAllCollectionNames());
    $parent_storage
      ->deleteAll();
    $this
      ->assertSame([
      'collection.sub.another',
      'collection.sub.new',
    ], $this->storage
      ->getAllCollectionNames());

    // Test operations on a collection emptied through deletion.
    $this
      ->assertFalse($parent_storage
      ->exists($name));
    $this
      ->assertEquals([], $parent_storage
      ->listAll());
    $this
      ->assertFalse($parent_storage
      ->delete($name));
    $this
      ->assertFalse($parent_storage
      ->deleteAll('config_test.'));
    $this
      ->assertFalse($parent_storage
      ->deleteAll());
    $this
      ->assertFalse($parent_storage
      ->rename($name, 'config_test.another_name'));

    // Check that the having an empty collection-less storage does not break
    // anything. Before deleting check that the previous delete did not affect
    // data in another collection.
    $this
      ->assertSame($data, $this->storage
      ->read($name));
    $this->storage
      ->delete($name);
    $this
      ->assertSame([
      'collection.sub.another',
      'collection.sub.new',
    ], $this->storage
      ->getAllCollectionNames());
  }
  protected abstract function read($name);
  protected abstract function insert($name, $data);
  protected abstract function update($name, $data);
  protected abstract function delete($name);

}