class HandlerTest

class HandlerTest extends ViewTestBase {
  use CommentTestTrait;
  
  /**
   * Views used by this test.
   *
   * @var array
   */
  public static $testViews = [
    'test_view',
    'test_view_handler_weight',
    'test_handler_relationships',
    'test_handler_test_access',
    'test_filter_in_operator_ui',
  ];
  
  /**
   * Modules to enable.
   *
   * @var array
   */
  public static $modules = [
    'views_ui',
    'comment',
    'node',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  protected function setUp($import_test_views = TRUE) {
    parent::setUp($import_test_views);
    $this->drupalCreateContentType([
      'type' => 'page',
    ]);
    $this->addDefaultCommentField('node', 'page');
    $this->enableViewsTestModule();
  }
  
  /**
   * {@inheritdoc}
   */
  protected function viewsData() {
    $data = parent::viewsData();
    // Override the name handler to be able to call placeholder() from outside.
    $data['views_test_data']['name']['field']['id'] = 'test_field';
    // Setup one field with an access callback and one with an access callback
    // and arguments.
    $data['views_test_data']['access_callback'] = $data['views_test_data']['id'];
    $data['views_test_data']['access_callback_arguments'] = $data['views_test_data']['id'];
    foreach (ViewExecutable::getHandlerTypes() as $type => $info) {
      if (isset($data['views_test_data']['access_callback'][$type]['id'])) {
        $data['views_test_data']['access_callback'][$type]['access callback'] = 'views_test_data_handler_test_access_callback';
        $data['views_test_data']['access_callback_arguments'][$type]['access callback'] = 'views_test_data_handler_test_access_callback_argument';
        $data['views_test_data']['access_callback_arguments'][$type]['access arguments'] = [
          TRUE,
        ];
      }
    }
    return $data;
  }
  
  /**
   * Tests the breakString method.
   */
  public function testBreakString() {
    // Check defaults.
    $this->assertEqual((object) [
      'value' => [],
      'operator' => NULL,
    ], HandlerBase::breakString(''));
    // Test ors
    $handler = HandlerBase::breakString('word1 word2+word');
    $this->assertEqualValue([
      'word1',
      'word2',
      'word',
    ], $handler);
    $this->assertEqual('or', $handler->operator);
    $handler = HandlerBase::breakString('word1+word2+word');
    $this->assertEqualValue([
      'word1',
      'word2',
      'word',
    ], $handler);
    $this->assertEqual('or', $handler->operator);
    $handler = HandlerBase::breakString('word1 word2 word');
    $this->assertEqualValue([
      'word1',
      'word2',
      'word',
    ], $handler);
    $this->assertEqual('or', $handler->operator);
    $handler = HandlerBase::breakString('word-1+word-2+word');
    $this->assertEqualValue([
      'word-1',
      'word-2',
      'word',
    ], $handler);
    $this->assertEqual('or', $handler->operator);
    $handler = HandlerBase::breakString('wõrd1+wõrd2+wõrd');
    $this->assertEqualValue([
      'wõrd1',
      'wõrd2',
      'wõrd',
    ], $handler);
    $this->assertEqual('or', $handler->operator);
    // Test ands.
    $handler = HandlerBase::breakString('word1,word2,word');
    $this->assertEqualValue([
      'word1',
      'word2',
      'word',
    ], $handler);
    $this->assertEqual('and', $handler->operator);
    $handler = HandlerBase::breakString('word1 word2,word');
    $this->assertEqualValue([
      'word1 word2',
      'word',
    ], $handler);
    $this->assertEqual('and', $handler->operator);
    $handler = HandlerBase::breakString('word1,word2 word');
    $this->assertEqualValue([
      'word1',
      'word2 word',
    ], $handler);
    $this->assertEqual('and', $handler->operator);
    $handler = HandlerBase::breakString('word-1,word-2,word');
    $this->assertEqualValue([
      'word-1',
      'word-2',
      'word',
    ], $handler);
    $this->assertEqual('and', $handler->operator);
    $handler = HandlerBase::breakString('wõrd1,wõrd2,wõrd');
    $this->assertEqualValue([
      'wõrd1',
      'wõrd2',
      'wõrd',
    ], $handler);
    $this->assertEqual('and', $handler->operator);
    // Test a single word
    $handler = HandlerBase::breakString('word');
    $this->assertEqualValue([
      'word',
    ], $handler);
    $this->assertEqual('and', $handler->operator);
    $s1 = $this->randomMachineName();
    // Generate three random numbers which can be used below;
    $n1 = rand(0, 100);
    $n2 = rand(0, 100);
    $n3 = rand(0, 100);
    // Test "or"s.
    $handlerBase = HandlerBase::breakString("{$s1} {$n2}+{$n3}");
    $this->assertEqualValue([
      $s1,
      $n2,
      $n3,
    ], $handlerBase);
    $this->assertEqual('or', $handlerBase->operator);
    $handlerBase = HandlerBase::breakString("{$s1}+{$n2}+{$n3}");
    $this->assertEqualValue([
      $s1,
      $n2,
      $n3,
    ], $handlerBase);
    $this->assertEqual('or', $handlerBase->operator);
    $handlerBase = HandlerBase::breakString("{$s1} {$n2} {$n3}");
    $this->assertEqualValue([
      $s1,
      $n2,
      $n3,
    ], $handlerBase);
    $this->assertEqual('or', $handlerBase->operator);
    $handlerBase = HandlerBase::breakString("{$s1} {$n2}++{$n3}");
    $this->assertEqualValue([
      $s1,
      $n2,
      $n3,
    ], $handlerBase);
    $this->assertEqual('or', $handlerBase->operator);
    // Test "and"s.
    $handlerBase = HandlerBase::breakString("{$s1},{$n2},{$n3}");
    $this->assertEqualValue([
      $s1,
      $n2,
      $n3,
    ], $handlerBase);
    $this->assertEqual('and', $handlerBase->operator);
    $handlerBase = HandlerBase::breakString("{$s1},,{$n2},{$n3}");
    $this->assertEqualValue([
      $s1,
      $n2,
      $n3,
    ], $handlerBase);
    $this->assertEqual('and', $handlerBase->operator);
    // Enforce int values.
    $handlerBase = HandlerBase::breakString("{$n1},{$n2},{$n3}", TRUE);
    $this->assertEqualValue([
      $n1,
      $n2,
      $n3,
    ], $handlerBase);
    $this->assertEqual('and', $handlerBase->operator);
    $handlerBase = HandlerBase::breakString("{$n1}+{$n2}+{$n3}", TRUE);
    $this->assertEqualValue([
      $n1,
      $n2,
      $n3,
    ], $handlerBase);
    $this->assertEqual('or', $handlerBase->operator);
    $handlerBase = HandlerBase::breakString("{$s1},{$n2},{$n3}", TRUE);
    $this->assertEqualValue([
      (int) $s1,
      $n2,
      $n3,
    ], $handlerBase);
    $this->assertEqual('and', $handlerBase->operator);
    $handlerBase = HandlerBase::breakString("{$s1}+{$n2}+{$n3}", TRUE);
    $this->assertEqualValue([
      (int) $s1,
      $n2,
      $n3,
    ], $handlerBase);
    $this->assertEqual('or', $handlerBase->operator);
    // Generate three random decimals which can be used below;
    $d1 = rand(0, 10) / 10;
    $d2 = rand(0, 10) / 10;
    $d3 = rand(0, 10) / 10;
    // Test "or"s.
    $handlerBase = HandlerBase::breakString("{$s1} {$d1}+{$d2}");
    $this->assertEqualValue([
      $s1,
      $d1,
      $d2,
    ], $handlerBase);
    $this->assertEqual('or', $handlerBase->operator);
    $handlerBase = HandlerBase::breakString("{$s1}+{$d1}+{$d3}");
    $this->assertEqualValue([
      $s1,
      $d1,
      $d3,
    ], $handlerBase);
    $this->assertEqual('or', $handlerBase->operator);
    $handlerBase = HandlerBase::breakString("{$s1} {$d2} {$d3}");
    $this->assertEqualValue([
      $s1,
      $d2,
      $d3,
    ], $handlerBase);
    $this->assertEqual('or', $handlerBase->operator);
    $handlerBase = HandlerBase::breakString("{$s1} {$d2}++{$d3}");
    $this->assertEqualValue([
      $s1,
      $d2,
      $d3,
    ], $handlerBase);
    $this->assertEqual('or', $handlerBase->operator);
    // Test "and"s.
    $handlerBase = HandlerBase::breakString("{$s1},{$d2},{$d3}");
    $this->assertEqualValue([
      $s1,
      $d2,
      $d3,
    ], $handlerBase);
    $this->assertEqual('and', $handlerBase->operator);
    $handlerBase = HandlerBase::breakString("{$s1},,{$d2},{$d3}");
    $this->assertEqualValue([
      $s1,
      $d2,
      $d3,
    ], $handlerBase);
    $this->assertEqual('and', $handlerBase->operator);
  }
  
  /**
   * Tests the order of handlers is the same before and after saving.
   */
  public function testHandlerWeights() {
    $handler_types = [
      'fields',
      'filters',
      'sorts',
    ];
    $view = Views::getView('test_view_handler_weight');
    $view->initDisplay();
    // Store the order of handlers before saving the view.
    $original_order = [];
    foreach ($handler_types as $type) {
      $original_order[$type] = array_keys($view->display_handler
        ->getOption($type));
    }
    // Save the view and see if our filters are in the same order.
    $view->save();
    $view = views::getView('test_view_handler_weight');
    $view->initDisplay();
    foreach ($handler_types as $type) {
      $loaded_order = array_keys($view->display_handler
        ->getOption($type));
      $this->assertIdentical($original_order[$type], $loaded_order);
    }
  }
  
  /**
   * Check to see if a value is the same as the value on a certain handler.
   *
   * @param $expected
   *   The expected value to check.
   * @param \Drupal\views\Plugin\views\ViewsHandlerInterface $handler
   *   The handler that has the $handler->value property to compare with first.
   * @param string $message
   *   The message to display along with the assertion.
   * @param string $group
   *   The type of assertion - examples are "Browser", "PHP".
   *
   * @return bool
   *   TRUE if the assertion succeeded, FALSE otherwise.
   */
  protected function assertEqualValue($expected, $handler, $message = '', $group = 'Other') {
    if (empty($message)) {
      $message = t('Comparing @first and @second', [
        '@first' => implode(',', $expected),
        '@second' => implode(',', $handler->value),
      ]);
    }
    return $this->assert($expected == $handler->value, $message, $group);
  }
  
  /**
   * Tests the relationship ui for field/filter/argument/relationship.
   */
  public function testRelationshipUI() {
    $views_admin = $this->drupalCreateUser([
      'administer views',
    ]);
    $this->drupalLogin($views_admin);
    // Make sure the link to the field options exists.
    $handler_options_path = 'admin/structure/views/nojs/handler/test_handler_relationships/default/field/title';
    $view_edit_path = 'admin/structure/views/view/test_handler_relationships/edit';
    $this->drupalGet($view_edit_path);
    $this->assertLinkByHref($handler_options_path);
    // The test view has a relationship to node_revision so the field should
    // show a relationship selection.
    $this->drupalGet($handler_options_path);
    $relationship_name = 'options[relationship]';
    $this->assertFieldByName($relationship_name);
    // Check for available options.
    $fields = $this->getSession()
      ->getPage()
      ->findAll('named_exact', [
      'field',
      $relationship_name,
    ]);
    $options = [];
    foreach ($fields as $field) {
      $items = $field->findAll('css', 'option');
      foreach ($items as $item) {
        $options[] = $item->getAttribute('value');
      }
    }
    $expected_options = [
      'none',
      'nid',
    ];
    $this->assertEqual($options, $expected_options);
    // Remove the relationship and make sure no relationship option appears.
    $this->drupalPostForm('admin/structure/views/nojs/handler/test_handler_relationships/default/relationship/nid', [], t('Remove'));
    $this->drupalGet($handler_options_path);
    $this->assertNoFieldByName($relationship_name, NULL, 'Make sure that no relationship option is available');
    // Create a view of comments with node relationship.
    View::create([
      'base_table' => 'comment_field_data',
      'id' => 'test_get_entity_type',
    ])->save();
    $this->drupalPostForm('admin/structure/views/nojs/add-handler/test_get_entity_type/default/relationship', [
      'name[comment_field_data.node]' => 'comment_field_data.node',
    ], t('Add and configure relationships'));
    $this->drupalPostForm(NULL, [], t('Apply'));
    // Add a content type filter.
    $this->drupalPostForm('admin/structure/views/nojs/add-handler/test_get_entity_type/default/filter', [
      'name[node_field_data.type]' => 'node_field_data.type',
    ], t('Add and configure filter criteria'));
    $this->assertOptionSelected('edit-options-relationship', 'node');
    $this->drupalPostForm(NULL, [
      'options[value][page]' => 'page',
    ], t('Apply'));
    // Check content type filter options.
    $this->drupalGet('admin/structure/views/nojs/handler/test_get_entity_type/default/filter/type');
    $this->assertOptionSelected('edit-options-relationship', 'node');
    $this->assertFieldChecked('edit-options-value-page');
  }
  
  /**
   * Tests the relationship method on the base class.
   */
  public function testSetRelationship() {
    $view = Views::getView('test_handler_relationships');
    $view->setDisplay();
    // Setup a broken relationship.
    $view->addHandler('default', 'relationship', $this->randomMachineName(), $this->randomMachineName(), [], 'broken_relationship');
    // Setup a valid relationship.
    $view->addHandler('default', 'relationship', 'comment_field_data', 'node', [
      'relationship' => 'cid',
    ], 'valid_relationship');
    $view->initHandlers();
    $field = $view->field['title'];
    $field->options['relationship'] = NULL;
    $field->setRelationship();
    $this->assertNull($field->relationship, 'Make sure that an empty relationship does not create a relationship on the field.');
    $field->options['relationship'] = $this->randomMachineName();
    $field->setRelationship();
    $this->assertNull($field->relationship, 'Make sure that a random relationship does not create a relationship on the field.');
    $field->options['relationship'] = 'broken_relationship';
    $field->setRelationship();
    $this->assertNull($field->relationship, 'Make sure that a broken relationship does not create a relationship on the field.');
    $field->options['relationship'] = 'valid_relationship';
    $field->setRelationship();
    $this->assertFalse(!empty($field->relationship), 'Make sure that the relationship alias was not set without building a views query before.');
    // Remove the invalid relationship.
    unset($view->relationship['broken_relationship']);
    $view->build();
    $field->setRelationship();
    $this->assertEqual($field->relationship, $view->relationship['valid_relationship']->alias, 'Make sure that a valid relationship does create the right relationship query alias.');
  }
  
  /**
   * Tests the placeholder function.
   *
   * @see \Drupal\views\Plugin\views\HandlerBase::placeholder()
   */
  public function testPlaceholder() {
    $view = Views::getView('test_view');
    $view->initHandlers();
    $view->initQuery();
    $handler = $view->field['name'];
    $table = $handler->table;
    $field = $handler->field;
    $string = ':' . $table . '_' . $field;
    // Make sure the placeholder variables are like expected.
    $this->assertEqual($handler->getPlaceholder(), $string);
    $this->assertEqual($handler->getPlaceholder(), $string . 1);
    $this->assertEqual($handler->getPlaceholder(), $string . 2);
    // Set another table/field combination and make sure there are new
    // placeholders.
    $table = $handler->table = $this->randomMachineName();
    $field = $handler->field = $this->randomMachineName();
    $string = ':' . $table . '_' . $field;
    // Make sure the placeholder variables are like expected.
    $this->assertEqual($handler->getPlaceholder(), $string);
    $this->assertEqual($handler->getPlaceholder(), $string . 1);
    $this->assertEqual($handler->getPlaceholder(), $string . 2);
  }
  
  /**
   * Tests access to a handler.
   *
   * @see views_test_data_handler_test_access_callback
   */
  public function testAccess() {
    $view = Views::getView('test_handler_test_access');
    $views_data = $this->viewsData();
    $views_data = $views_data['views_test_data'];
    // Enable access to callback only field and deny for callback + arguments.
    $this->config('views_test_data.tests')
      ->set('handler_access_callback', TRUE)
      ->save();
    $this->config('views_test_data.tests')
      ->set('handler_access_callback_argument', FALSE)
      ->save();
    $view->initDisplay();
    $view->initHandlers();
    foreach ($views_data['access_callback'] as $type => $info) {
      if (!in_array($type, [
        'title',
        'help',
      ])) {
        $this->assertInstanceOf(HandlerBase::class, $view->field['access_callback']);
        $this->assertFalse(isset($view->field['access_callback_arguments']), 'Make sure the user got no access to the access_callback_arguments field ');
      }
    }
    // Enable access to the callback + argument handlers and deny for callback.
    $this->config('views_test_data.tests')
      ->set('handler_access_callback', FALSE)
      ->save();
    $this->config('views_test_data.tests')
      ->set('handler_access_callback_argument', TRUE)
      ->save();
    $view->destroy();
    $view->initDisplay();
    $view->initHandlers();
    foreach ($views_data['access_callback'] as $type => $info) {
      if (!in_array($type, [
        'title',
        'help',
      ])) {
        $this->assertFalse(isset($view->field['access_callback']), 'Make sure the user got no access to the access_callback field ');
        $this->assertInstanceOf(HandlerBase::class, $view->field['access_callback_arguments']);
      }
    }
  }

}