function DevelToolbarTest::testCacheHeaders

Tests cache metadata headers.

File

tests/src/Functional/DevelToolbarTest.php, line 112

Class

DevelToolbarTest

Tests devel toolbar module functionality.

Namespace

Code

public function testCacheHeaders() : void {
    // Disable user toolbar tab so we can test properly if the devel toolbar
    // implementation interferes with the page cacheability.
    \Drupal::service('module_installer')->install([
        'toolbar_disable_user_toolbar',
    ]);
    // The menu is not loaded for users without the adequate permission,
    // so no cache tags for configuration are added.
    $this->drupalLogin($this->toolbarUser);
    $this->assertSession()
        ->responseHeaderNotContains('X-Drupal-Cache-Tags', 'config:devel.toolbar.settings');
    $this->assertSession()
        ->responseHeaderNotContains('X-Drupal-Cache-Tags', 'config:system.menu.devel');
    // Make sure that the configuration cache tags are present for users with
    // the adequate permission.
    $this->drupalLogin($this->develUser);
    $this->assertSession()
        ->responseHeaderContains('X-Drupal-Cache-Tags', 'config:devel.toolbar.settings');
    $this->assertSession()
        ->responseHeaderContains('X-Drupal-Cache-Tags', 'config:system.menu.devel');
    // The Devel toolbar implementation should not interfere with the page
    // cacheability, so you expect a MISS value in the X-Drupal-Dynamic-Cache
    // header the first time.
    $this->assertSession()
        ->responseHeaderContains('X-Drupal-Dynamic-Cache', 'MISS');
    // Triggers a page reload and verify that the page is served from the
    // cache.
    $this->drupalGet('');
    $this->assertSession()
        ->responseHeaderContains('X-Drupal-Dynamic-Cache', 'HIT');
}