function NodeEntityViewModeAlterTest::testNodeViewModeChange

Create a "Basic page" node and verify its consistency in the database.

File

core/modules/node/tests/src/Functional/NodeEntityViewModeAlterTest.php, line 36

Class

NodeEntityViewModeAlterTest

Tests changing view modes for nodes.

Namespace

Code

public function testNodeViewModeChange() : void {
  $web_user = $this->drupalCreateUser([
    'create page content',
    'edit own page content',
  ]);
  $this->drupalLogin($web_user);
  $display = \Drupal::service('entity_display.repository')->getViewDisplay('node', 'page', 'teaser');
  $display_options = $display->getComponent('body');
  $display_options['settings']['trim_length'] = 25;
  $display->setComponent('body', $display_options)
    ->save();
  // Create a node.
  $edit = [];
  $edit['title[0][value]'] = $this->randomMachineName(8);
  $edit['body[0][value]'] = 'Data that should appear only in the body for the node.';
  $this->drupalGet('node/add/page');
  $this->submitForm($edit, 'Save');
  $node = $this->drupalGetNodeByTitle($edit['title[0][value]']);
  // Set the flag to alter the view mode and view the node.
  \Drupal::state()->set('node_test_change_view_mode', 'teaser');
  Cache::invalidateTags([
    'rendered',
  ]);
  $this->drupalGet('node/' . $node->id());
  // Check that teaser mode is viewed. Should be trimmed to 25.
  $this->assertSession()
    ->pageTextContains('Data that should appear');
  $this->assertSession()
    ->pageTextNotContains(' only in the body for the node.');
  // Test that the correct build mode has been set.
  $build = $this->buildEntityView($node);
  $this->assertEquals('teaser', $build['#view_mode'], 'The view mode has correctly been set to teaser.');
}