class StoreTest

class StoreTest extends \PHPUnit_Framework_TestCase {
  protected $request;
  protected $response;
  protected $store;
  protected function setUp() {
    if (!class_exists('Symfony\\Component\\HttpFoundation\\Request')) {
      $this
        ->markTestSkipped('The "HttpFoundation" component is not available');
    }
    $this->request = Request::create('/');
    $this->response = new Response('hello world', 200, array());
    HttpCacheTestCase::clearDirectory(sys_get_temp_dir() . '/http_cache');
    $this->store = new Store(sys_get_temp_dir() . '/http_cache');
  }
  protected function tearDown() {
    $this->store = null;
    $this->request = null;
    $this->response = null;
    HttpCacheTestCase::clearDirectory(sys_get_temp_dir() . '/http_cache');
  }
  public function testReadsAnEmptyArrayWithReadWhenNothingCachedAtKey() {
    $this
      ->assertEmpty($this
      ->getStoreMetadata('/nothing'));
  }
  public function testUnlockFileThatDoesExist() {
    $cacheKey = $this
      ->storeSimpleEntry();
    $this->store
      ->lock($this->request);
    $this
      ->assertTrue($this->store
      ->unlock($this->request));
  }
  public function testUnlockFileThatDoesNotExist() {
    $this
      ->assertFalse($this->store
      ->unlock($this->request));
  }
  public function testRemovesEntriesForKeyWithPurge() {
    $request = Request::create('/foo');
    $this->store
      ->write($request, new Response('foo'));
    $metadata = $this
      ->getStoreMetadata($request);
    $this
      ->assertNotEmpty($metadata);
    $this
      ->assertTrue($this->store
      ->purge('/foo'));
    $this
      ->assertEmpty($this
      ->getStoreMetadata($request));

    // cached content should be kept after purging
    $path = $this->store
      ->getPath($metadata[0][1]['x-content-digest'][0]);
    $this
      ->assertTrue(is_file($path));
    $this
      ->assertFalse($this->store
      ->purge('/bar'));
  }
  public function testStoresACacheEntry() {
    $cacheKey = $this
      ->storeSimpleEntry();
    $this
      ->assertNotEmpty($this
      ->getStoreMetadata($cacheKey));
  }
  public function testSetsTheXContentDigestResponseHeaderBeforeStoring() {
    $cacheKey = $this
      ->storeSimpleEntry();
    $entries = $this
      ->getStoreMetadata($cacheKey);
    list($req, $res) = $entries[0];
    $this
      ->assertEquals('ena94a8fe5ccb19ba61c4c0873d391e987982fbbd3', $res['x-content-digest'][0]);
  }
  public function testFindsAStoredEntryWithLookup() {
    $this
      ->storeSimpleEntry();
    $response = $this->store
      ->lookup($this->request);
    $this
      ->assertNotNull($response);
    $this
      ->assertInstanceOf('Symfony\\Component\\HttpFoundation\\Response', $response);
  }
  public function testDoesNotFindAnEntryWithLookupWhenNoneExists() {
    $request = Request::create('/test', 'get', array(), array(), array(), array(
      'HTTP_FOO' => 'Foo',
      'HTTP_BAR' => 'Bar',
    ));
    $this
      ->assertNull($this->store
      ->lookup($request));
  }
  public function testCanonizesUrlsForCacheKeys() {
    $this
      ->storeSimpleEntry($path = '/test?x=y&p=q');
    $hitsReq = Request::create($path);
    $missReq = Request::create('/test?p=x');
    $this
      ->assertNotNull($this->store
      ->lookup($hitsReq));
    $this
      ->assertNull($this->store
      ->lookup($missReq));
  }
  public function testDoesNotFindAnEntryWithLookupWhenTheBodyDoesNotExist() {
    $this
      ->storeSimpleEntry();
    $this
      ->assertNotNull($this->response->headers
      ->get('X-Content-Digest'));
    $path = $this
      ->getStorePath($this->response->headers
      ->get('X-Content-Digest'));
    @unlink($path);
    $this
      ->assertNull($this->store
      ->lookup($this->request));
  }
  public function testRestoresResponseHeadersProperlyWithLookup() {
    $this
      ->storeSimpleEntry();
    $response = $this->store
      ->lookup($this->request);
    $this
      ->assertEquals($response->headers
      ->all(), array_merge(array(
      'content-length' => 4,
      'x-body-file' => array(
        $this
          ->getStorePath($response->headers
          ->get('X-Content-Digest')),
      ),
    ), $this->response->headers
      ->all()));
  }
  public function testRestoresResponseContentFromEntityStoreWithLookup() {
    $this
      ->storeSimpleEntry();
    $response = $this->store
      ->lookup($this->request);
    $this
      ->assertEquals($this
      ->getStorePath('en' . sha1('test')), $response
      ->getContent());
  }
  public function testInvalidatesMetaAndEntityStoreEntriesWithInvalidate() {
    $this
      ->storeSimpleEntry();
    $this->store
      ->invalidate($this->request);
    $response = $this->store
      ->lookup($this->request);
    $this
      ->assertInstanceOf('Symfony\\Component\\HttpFoundation\\Response', $response);
    $this
      ->assertFalse($response
      ->isFresh());
  }
  public function testSucceedsQuietlyWhenInvalidateCalledWithNoMatchingEntries() {
    $req = Request::create('/test');
    $this->store
      ->invalidate($req);
    $this
      ->assertNull($this->store
      ->lookup($this->request));
  }
  public function testDoesNotReturnEntriesThatVaryWithLookup() {
    $req1 = Request::create('/test', 'get', array(), array(), array(), array(
      'HTTP_FOO' => 'Foo',
      'HTTP_BAR' => 'Bar',
    ));
    $req2 = Request::create('/test', 'get', array(), array(), array(), array(
      'HTTP_FOO' => 'Bling',
      'HTTP_BAR' => 'Bam',
    ));
    $res = new Response('test', 200, array(
      'Vary' => 'Foo Bar',
    ));
    $this->store
      ->write($req1, $res);
    $this
      ->assertNull($this->store
      ->lookup($req2));
  }
  public function testStoresMultipleResponsesForEachVaryCombination() {
    $req1 = Request::create('/test', 'get', array(), array(), array(), array(
      'HTTP_FOO' => 'Foo',
      'HTTP_BAR' => 'Bar',
    ));
    $res1 = new Response('test 1', 200, array(
      'Vary' => 'Foo Bar',
    ));
    $key = $this->store
      ->write($req1, $res1);
    $req2 = Request::create('/test', 'get', array(), array(), array(), array(
      'HTTP_FOO' => 'Bling',
      'HTTP_BAR' => 'Bam',
    ));
    $res2 = new Response('test 2', 200, array(
      'Vary' => 'Foo Bar',
    ));
    $this->store
      ->write($req2, $res2);
    $req3 = Request::create('/test', 'get', array(), array(), array(), array(
      'HTTP_FOO' => 'Baz',
      'HTTP_BAR' => 'Boom',
    ));
    $res3 = new Response('test 3', 200, array(
      'Vary' => 'Foo Bar',
    ));
    $this->store
      ->write($req3, $res3);
    $this
      ->assertEquals($this
      ->getStorePath('en' . sha1('test 3')), $this->store
      ->lookup($req3)
      ->getContent());
    $this
      ->assertEquals($this
      ->getStorePath('en' . sha1('test 2')), $this->store
      ->lookup($req2)
      ->getContent());
    $this
      ->assertEquals($this
      ->getStorePath('en' . sha1('test 1')), $this->store
      ->lookup($req1)
      ->getContent());
    $this
      ->assertCount(3, $this
      ->getStoreMetadata($key));
  }
  public function testOverwritesNonVaryingResponseWithStore() {
    $req1 = Request::create('/test', 'get', array(), array(), array(), array(
      'HTTP_FOO' => 'Foo',
      'HTTP_BAR' => 'Bar',
    ));
    $res1 = new Response('test 1', 200, array(
      'Vary' => 'Foo Bar',
    ));
    $key = $this->store
      ->write($req1, $res1);
    $this
      ->assertEquals($this
      ->getStorePath('en' . sha1('test 1')), $this->store
      ->lookup($req1)
      ->getContent());
    $req2 = Request::create('/test', 'get', array(), array(), array(), array(
      'HTTP_FOO' => 'Bling',
      'HTTP_BAR' => 'Bam',
    ));
    $res2 = new Response('test 2', 200, array(
      'Vary' => 'Foo Bar',
    ));
    $this->store
      ->write($req2, $res2);
    $this
      ->assertEquals($this
      ->getStorePath('en' . sha1('test 2')), $this->store
      ->lookup($req2)
      ->getContent());
    $req3 = Request::create('/test', 'get', array(), array(), array(), array(
      'HTTP_FOO' => 'Foo',
      'HTTP_BAR' => 'Bar',
    ));
    $res3 = new Response('test 3', 200, array(
      'Vary' => 'Foo Bar',
    ));
    $key = $this->store
      ->write($req3, $res3);
    $this
      ->assertEquals($this
      ->getStorePath('en' . sha1('test 3')), $this->store
      ->lookup($req3)
      ->getContent());
    $this
      ->assertCount(2, $this
      ->getStoreMetadata($key));
  }
  public function testLocking() {
    $req = Request::create('/test', 'get', array(), array(), array(), array(
      'HTTP_FOO' => 'Foo',
      'HTTP_BAR' => 'Bar',
    ));
    $this
      ->assertTrue($this->store
      ->lock($req));
    $path = $this->store
      ->lock($req);
    $this
      ->assertTrue($this->store
      ->isLocked($req));
    $this->store
      ->unlock($req);
    $this
      ->assertFalse($this->store
      ->isLocked($req));
  }
  protected function storeSimpleEntry($path = null, $headers = array()) {
    if (null === $path) {
      $path = '/test';
    }
    $this->request = Request::create($path, 'get', array(), array(), array(), $headers);
    $this->response = new Response('test', 200, array(
      'Cache-Control' => 'max-age=420',
    ));
    return $this->store
      ->write($this->request, $this->response);
  }
  protected function getStoreMetadata($key) {
    $r = new \ReflectionObject($this->store);
    $m = $r
      ->getMethod('getMetadata');
    $m
      ->setAccessible(true);
    if ($key instanceof Request) {
      $m1 = $r
        ->getMethod('getCacheKey');
      $m1
        ->setAccessible(true);
      $key = $m1
        ->invoke($this->store, $key);
    }
    return $m
      ->invoke($this->store, $key);
  }
  protected function getStorePath($key) {
    $r = new \ReflectionObject($this->store);
    $m = $r
      ->getMethod('getPath');
    $m
      ->setAccessible(true);
    return $m
      ->invoke($this->store, $key);
  }

}