class FileCacheTest

class FileCacheTest extends TestCase {
  
  /**
   * FileCache object used for the tests.
   *
   * @var \Drupal\Component\FileCache\FileCacheInterface
   */
  protected $fileCache;
  
  /**
   * Static FileCache object used for verification of tests.
   *
   * @var \Drupal\Component\FileCache\FileCacheBackendInterface
   */
  protected $staticFileCache;
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $this->fileCache = new FileCache('prefix', 'test', '\\Drupal\\Tests\\Component\\FileCache\\StaticFileCacheBackend', [
      'bin' => 'llama',
    ]);
    $this->staticFileCache = new StaticFileCacheBackend([
      'bin' => 'llama',
    ]);
  }
  
  /**
   * @covers ::get
   * @covers ::__construct
   */
  public function testGet() {
    // Test a cache miss.
    $result = $this->fileCache
      ->get(__DIR__ . DIRECTORY_SEPARATOR . 'Fixtures' . DIRECTORY_SEPARATOR . 'no-llama-42.yml');
    $this->assertNull($result);
    // Test a cache hit.
    $filename = __DIR__ . DIRECTORY_SEPARATOR . 'Fixtures' . DIRECTORY_SEPARATOR . 'llama-42.txt';
    $realpath = realpath($filename);
    $cid = 'prefix:test:' . $realpath;
    $data = [
      'mtime' => filemtime($realpath),
      'filepath' => $realpath,
      'data' => 42,
    ];
    $this->staticFileCache
      ->store($cid, $data);
    $result = $this->fileCache
      ->get($filename);
    $this->assertEquals(42, $result);
    // Cleanup static caches.
    $this->fileCache
      ->delete($filename);
  }
  
  /**
   * @covers ::getMultiple
   */
  public function testGetMultiple() {
    // Test a cache miss.
    $result = $this->fileCache
      ->getMultiple([
      __DIR__ . DIRECTORY_SEPARATOR . 'Fixtures' . DIRECTORY_SEPARATOR . 'no-llama-42.yml',
    ]);
    $this->assertEmpty($result);
    // Test a cache hit.
    $filename = __DIR__ . DIRECTORY_SEPARATOR . 'Fixtures' . DIRECTORY_SEPARATOR . 'llama-42.txt';
    $realpath = realpath($filename);
    $cid = 'prefix:test:' . $realpath;
    $data = [
      'mtime' => filemtime($realpath),
      'filepath' => $realpath,
      'data' => 42,
    ];
    $this->staticFileCache
      ->store($cid, $data);
    $result = $this->fileCache
      ->getMultiple([
      $filename,
    ]);
    $this->assertEquals([
      $filename => 42,
    ], $result);
    // Test a static cache hit.
    $file2 = __DIR__ . DIRECTORY_SEPARATOR . 'Fixtures' . DIRECTORY_SEPARATOR . 'llama-23.txt';
    $this->fileCache
      ->set($file2, 23);
    $result = $this->fileCache
      ->getMultiple([
      $filename,
      $file2,
    ]);
    $this->assertEquals([
      $filename => 42,
      $file2 => 23,
    ], $result);
    // Cleanup static caches.
    $this->fileCache
      ->delete($filename);
    $this->fileCache
      ->delete($file2);
  }
  
  /**
   * @covers ::set
   */
  public function testSet() {
    $filename = __DIR__ . DIRECTORY_SEPARATOR . 'Fixtures' . DIRECTORY_SEPARATOR . 'llama-23.txt';
    $realpath = realpath($filename);
    $cid = 'prefix:test:' . $realpath;
    $data = [
      'mtime' => filemtime($realpath),
      'filepath' => $realpath,
      'data' => 23,
    ];
    $this->fileCache
      ->set($filename, 23);
    $result = $this->staticFileCache
      ->fetch([
      $cid,
    ]);
    $this->assertEquals([
      $cid => $data,
    ], $result);
    // Cleanup static caches.
    $this->fileCache
      ->delete($filename);
  }
  
  /**
   * @covers ::delete
   */
  public function testDelete() {
    $filename = __DIR__ . DIRECTORY_SEPARATOR . 'Fixtures' . DIRECTORY_SEPARATOR . 'llama-23.txt';
    $realpath = realpath($filename);
    $cid = 'prefix:test:' . $realpath;
    $this->fileCache
      ->set($filename, 23);
    // Ensure data is removed after deletion.
    $this->fileCache
      ->delete($filename);
    $result = $this->staticFileCache
      ->fetch([
      $cid,
    ]);
    $this->assertEquals([], $result);
    $result = $this->fileCache
      ->get($filename);
    $this->assertNull($result);
  }

}