class PagerTest

1. 8.x drupal/core/modules/views/lib/Drupal/views/Tests/Plugin/PagerTest.php \Drupal\views\Tests\Plugin\PagerTest
2. 8.x drupal/core/modules/system/lib/Drupal/system/Tests/Pager/PagerTest.php \Drupal\system\Tests\Pager\PagerTest

class PagerTest extends PluginTestBase {

  /**
   * Views used by this test.
   *
   * @var array
   */
  public static $testViews = array(
    'test_store_pager_settings',
    'test_pager_none',
    'test_pager_some',
    'test_pager_full',
    'test_view_pager_full_zero_items_per_page',
    'test_view',
  );

  /**
   * Modules to enable.
   *
   * @var array
   */
  public static $modules = array(
    'views_ui',
  );
  public static function getInfo() {
    return array(
      'name' => 'Pager',
      'description' => 'Test the pluggable pager system.',
      'group' => 'Views Plugins',
    );
  }

  /**
   * Pagers was sometimes not stored.
   *
   * @see http://drupal.org/node/652712
   */
  public function testStorePagerSettings() {
    $admin_user = $this
      ->drupalCreateUser(array(
      'administer views',
      'administer site configuration',
    ));
    $this
      ->drupalLogin($admin_user);

    // Test behaviour described in http://drupal.org/node/652712#comment-2354918.
    $this
      ->drupalGet('admin/structure/views/view/test_view/edit');
    $edit = array(
      'pager[type]' => 'full',
    );
    $this
      ->drupalPost('admin/structure/views/nojs/display/test_view/default/pager', $edit, t('Apply'));
    $edit = array(
      'pager_options[items_per_page]' => 20,
    );
    $this
      ->drupalPost('admin/structure/views/nojs/display/test_view/default/pager_options', $edit, t('Apply'));
    $this
      ->assertText('20 items');

    // Change type and check whether the type is new type is stored.
    $edit = array();
    $edit = array(
      'pager[type]' => 'mini',
    );
    $this
      ->drupalPost('admin/structure/views/nojs/display/test_view/default/pager', $edit, t('Apply'));
    $this
      ->drupalGet('admin/structure/views/view/test_view/edit');
    $this
      ->assertText('Mini', 'Changed pager plugin, should change some text');

    // Test behaviour described in http://drupal.org/node/652712#comment-2354400
    $view = views_get_view('test_store_pager_settings');

    // Make it editable in the admin interface.
    $view
      ->save();
    $this
      ->drupalGet('admin/structure/views/view/test_store_pager_settings/edit');
    $edit = array();
    $edit = array(
      'pager[type]' => 'full',
    );
    $this
      ->drupalPost('admin/structure/views/nojs/display/test_store_pager_settings/default/pager', $edit, t('Apply'));
    $this
      ->drupalGet('admin/structure/views/view/test_store_pager_settings/edit');
    $this
      ->assertText('Full');
    $edit = array(
      'pager_options[items_per_page]' => 20,
    );
    $this
      ->drupalPost('admin/structure/views/nojs/display/test_store_pager_settings/default/pager_options', $edit, t('Apply'));
    $this
      ->assertText('20 items');

    // add new display and test the settings again, by override it.
    $edit = array();

    // Add a display and override the pager settings.
    $this
      ->drupalPost('admin/structure/views/view/test_store_pager_settings/edit', $edit, t('Add Page'));
    $edit = array(
      'override[dropdown]' => 'page_1',
    );
    $this
      ->drupalPost('admin/structure/views/nojs/display/test_store_pager_settings/page_1/pager', $edit, t('Apply'));
    $edit = array(
      'pager[type]' => 'mini',
    );
    $this
      ->drupalPost('admin/structure/views/nojs/display/test_store_pager_settings/page_1/pager', $edit, t('Apply'));
    $this
      ->drupalGet('admin/structure/views/view/test_store_pager_settings/edit');
    $this
      ->assertText('Mini', 'Changed pager plugin, should change some text');
    $edit = array(
      'pager_options[items_per_page]' => 10,
    );
    $this
      ->drupalPost('admin/structure/views/nojs/display/test_store_pager_settings/default/pager_options', $edit, t('Apply'));
    $this
      ->assertText('10 items', 'The default value has been changed.');
    $this
      ->drupalGet('admin/structure/views/view/test_store_pager_settings/edit/page_1');
    $this
      ->assertText('20 items', 'The original value remains unchanged.');
  }

  /**
   * Tests the none-pager-query.
   */
  public function testNoLimit() {

    // Create 11 nodes and make sure that everyone is returned.
    // We create 11 nodes, because the default pager plugin had 10 items per page.
    for ($i = 0; $i < 11; $i++) {
      $this
        ->drupalCreateNode();
    }
    $view = views_get_view('test_pager_none');
    $this
      ->executeView($view);
    $this
      ->assertEqual(count($view->result), 11, 'Make sure that every item is returned in the result');

    // Setup and test a offset.
    $view = views_get_view('test_pager_none');
    $view
      ->setDisplay();
    $pager = array(
      'type' => 'none',
      'options' => array(
        'offset' => 3,
      ),
    );
    $view->display_handler
      ->setOption('pager', $pager);
    $this
      ->executeView($view);
    $this
      ->assertEqual(count($view->result), 8, 'Make sure that every item beside the first three is returned in the result');

    // Check some public functions.
    $this
      ->assertFalse($view->pager
      ->usePager());
    $this
      ->assertFalse($view->pager
      ->useCountQuery());
    $this
      ->assertEqual($view->pager
      ->getItemsPerPage(), 0);
  }
  public function testViewTotalRowsWithoutPager() {
    for ($i = 0; $i < 23; $i++) {
      $this
        ->drupalCreateNode();
    }
    $view = views_get_view('test_pager_none');
    $view->get_total_rows = TRUE;
    $this
      ->executeView($view);
    $this
      ->assertEqual($view->total_rows, 23, "'total_rows' is calculated when pager type is 'none' and 'get_total_rows' is TRUE.");
  }

  /**
   * Tests the some pager plugin.
   */
  public function testLimit() {

    // Create 11 nodes and make sure that everyone is returned.
    // We create 11 nodes, because the default pager plugin had 10 items per page.
    for ($i = 0; $i < 11; $i++) {
      $this
        ->drupalCreateNode();
    }
    $view = views_get_view('test_pager_some');
    $this
      ->executeView($view);
    $this
      ->assertEqual(count($view->result), 5, 'Make sure that only a certain count of items is returned');

    // Setup and test a offset.
    $view = views_get_view('test_pager_some');
    $view
      ->setDisplay();
    $pager = array(
      'type' => 'none',
      'options' => array(
        'offset' => 8,
        'items_per_page' => 5,
      ),
    );
    $view->display_handler
      ->setOption('pager', $pager);
    $this
      ->executeView($view);
    $this
      ->assertEqual(count($view->result), 3, 'Make sure that only a certain count of items is returned');

    // Check some public functions.
    $this
      ->assertFalse($view->pager
      ->usePager());
    $this
      ->assertFalse($view->pager
      ->useCountQuery());
  }

  /**
   * Tests the normal pager.
   */
  public function testNormalPager() {

    // Create 11 nodes and make sure that everyone is returned.
    // We create 11 nodes, because the default pager plugin had 10 items per page.
    for ($i = 0; $i < 11; $i++) {
      $this
        ->drupalCreateNode();
    }
    $view = views_get_view('test_pager_full');
    $this
      ->executeView($view);
    $this
      ->assertEqual(count($view->result), 5, 'Make sure that only a certain count of items is returned');

    // Setup and test a offset.
    $view = views_get_view('test_pager_full');
    $view
      ->setDisplay();
    $pager = array(
      'type' => 'full',
      'options' => array(
        'offset' => 8,
        'items_per_page' => 5,
      ),
    );
    $view->display_handler
      ->setOption('pager', $pager);
    $this
      ->executeView($view);
    $this
      ->assertEqual(count($view->result), 3, 'Make sure that only a certain count of items is returned');

    // Test items per page = 0
    $view = views_get_view('test_view_pager_full_zero_items_per_page');
    $this
      ->executeView($view);
    $this
      ->assertEqual(count($view->result), 11, 'All items are return');

    // TODO test number of pages.
    // Test items per page = 0.
    // Setup and test a offset.
    $view = views_get_view('test_pager_full');
    $view
      ->setDisplay();
    $pager = array(
      'type' => 'full',
      'options' => array(
        'offset' => 0,
        'items_per_page' => 0,
      ),
    );
    $view->display_handler
      ->setOption('pager', $pager);
    $this
      ->executeView($view);
    $this
      ->assertEqual($view->pager
      ->getItemsPerPage(), 0);
    $this
      ->assertEqual(count($view->result), 11);
  }

  /**
   * Tests rendering with NULL pager.
   */
  public function testRenderNullPager() {

    // Create 11 nodes and make sure that everyone is returned.
    // We create 11 nodes, because the default pager plugin had 10 items per page.
    for ($i = 0; $i < 11; $i++) {
      $this
        ->drupalCreateNode();
    }
    $view = views_get_view('test_pager_full');
    $this
      ->executeView($view);

    // Force the value again here.
    $view
      ->setAjaxEnabled(TRUE);
    $view->pager = NULL;
    $output = $view
      ->render();
    $output = drupal_render($output);
    $this
      ->assertEqual(preg_match('/<ul class="pager">/', $output), 0, t('The pager is not rendered.'));
  }

  /**
   * Test the api functions on the view object.
   */
  function testPagerApi() {
    $view = views_get_view('test_pager_full');
    $view
      ->setDisplay();

    // On the first round don't initialize the pager.
    $this
      ->assertEqual($view
      ->getItemsPerPage(), NULL, 'If the pager is not initialized and no manual override there is no items per page.');
    $rand_number = rand(1, 5);
    $view
      ->setItemsPerPage($rand_number);
    $this
      ->assertEqual($view
      ->getItemsPerPage(), $rand_number, 'Make sure getItemsPerPage uses the settings of setItemsPerPage.');
    $this
      ->assertEqual($view
      ->getOffset(), NULL, 'If the pager is not initialized and no manual override there is no offset.');
    $rand_number = rand(1, 5);
    $view
      ->setOffset($rand_number);
    $this
      ->assertEqual($view
      ->getOffset(), $rand_number, 'Make sure getOffset uses the settings of setOffset.');
    $this
      ->assertEqual($view
      ->getCurrentPage(), NULL, 'If the pager is not initialized and no manual override there is no current page.');
    $rand_number = rand(1, 5);
    $view
      ->setCurrentPage($rand_number);
    $this
      ->assertEqual($view
      ->getCurrentPage(), $rand_number, 'Make sure getCurrentPage uses the settings of set_current_page.');
    $view
      ->destroy();

    // On this round enable the pager.
    $view
      ->initDisplay();
    $view
      ->initQuery();
    $view
      ->initPager();
    $this
      ->assertEqual($view
      ->getItemsPerPage(), 5, 'Per default the view has 5 items per page.');
    $rand_number = rand(1, 5);
    $view
      ->setItemsPerPage($rand_number);
    $rand_number = rand(6, 11);
    $view->pager
      ->setItemsPerPage($rand_number);
    $this
      ->assertEqual($view
      ->getItemsPerPage(), $rand_number, 'Make sure getItemsPerPage uses the settings of setItemsPerPage.');
    $this
      ->assertEqual($view
      ->getOffset(), 0, 'Per default a view has a 0 offset.');
    $rand_number = rand(1, 5);
    $view
      ->setOffset($rand_number);
    $rand_number = rand(6, 11);
    $view->pager
      ->setOffset($rand_number);
    $this
      ->assertEqual($view
      ->getOffset(), $rand_number, 'Make sure getOffset uses the settings of setOffset.');
    $this
      ->assertEqual($view
      ->getCurrentPage(), 0, 'Per default the current page is 0.');
    $rand_number = rand(1, 5);
    $view
      ->setCurrentPage($rand_number);
    $rand_number = rand(6, 11);
    $view->pager
      ->setCurrentPage($rand_number);
    $this
      ->assertEqual($view
      ->getCurrentPage(), $rand_number, 'Make sure getCurrentPage uses the settings of set_current_page.');

    // Set an invalid page and make sure the method takes care about it.
    $view
      ->setCurrentPage(-1);
    $this
      ->assertEqual($view
      ->getCurrentPage(), 0, 'Make sure setCurrentPage always sets a valid page number.');
  }

}