function CacheContextOptimizationTest::testUserPermissionCacheContextOptimization

Ensures that 'user.permissions' cache context is able to define cache tags.

File

core/tests/Drupal/KernelTests/Core/Cache/CacheContextOptimizationTest.php, line 37

Class

CacheContextOptimizationTest

Tests the cache context optimization.

Namespace

Code

public function testUserPermissionCacheContextOptimization() : void {
    $user1 = $this->createUser();
    $this->assertEquals(1, $user1->id());
    $authenticated_user = $this->createUser([
        'administer permissions',
    ]);
    $role = $authenticated_user->getRoles()[1];
    $test_element = [
        '#cache' => [
            'keys' => [
                'test',
            ],
            'contexts' => [
                'user',
                'user.permissions',
            ],
        ],
    ];
    \Drupal::service('account_switcher')->switchTo($authenticated_user);
    $element = $test_element;
    $element['#markup'] = 'content for authenticated users';
    $output = \Drupal::service('renderer')->renderRoot($element);
    $this->assertEquals('content for authenticated users', $output);
    // Verify that the render caching is working so that other tests can be
    // trusted.
    $element = $test_element;
    $element['#markup'] = 'this should not be visible';
    $output = \Drupal::service('renderer')->renderRoot($element);
    $this->assertEquals('content for authenticated users', $output);
    // Even though the cache contexts have been optimized to only include 'user'
    // cache context, the element should have been changed because
    // 'user.permissions' cache context defined a cache tags for permission
    // changes, which should have bubbled up for the element when it was
    // optimized away.
    Role::load($role)->revokePermission('administer permissions')
        ->save();
    $element = $test_element;
    $element['#markup'] = 'this should be visible';
    $output = \Drupal::service('renderer')->renderRoot($element);
    $this->assertEquals('this should be visible', $output);
}