function PageCacheTest::testPageCache

Tests cache headers.

File

core/modules/page_cache/tests/src/Functional/PageCacheTest.php, line 251

Class

PageCacheTest

Enables the page cache and tests it with various HTTP requests.

Namespace

Code

public function testPageCache() {
    $config = $this->config('system.performance');
    $config->set('cache.page.max_age', 300);
    $config->save();
    // Fill the cache.
    $this->drupalGet('system-test/set-header', [
        'query' => [
            'name' => 'Foo',
            'value' => 'bar',
        ],
    ]);
    $this->assertEqual($this->drupalGetHeader('X-Drupal-Cache'), 'MISS', 'Page was not cached.');
    $this->assertContains('cookie', explode(',', strtolower($this->drupalGetHeader('Vary'))), 'Vary header was sent.', TRUE);
    // Symfony's Response logic determines a specific order for the subvalues
    // of the Cache-Control header, even if they are explicitly passed in to
    // the response header bag in a different order.
    $this->assertEqual($this->drupalGetHeader('Cache-Control'), 'max-age=300, public', 'Cache-Control header was sent.');
    $this->assertEqual($this->drupalGetHeader('Expires'), 'Sun, 19 Nov 1978 05:00:00 GMT', 'Expires header was sent.');
    $this->assertEqual($this->drupalGetHeader('Foo'), 'bar', 'Custom header was sent.');
    // Check cache.
    $this->drupalGet('system-test/set-header', [
        'query' => [
            'name' => 'Foo',
            'value' => 'bar',
        ],
    ]);
    $this->assertEqual($this->drupalGetHeader('X-Drupal-Cache'), 'HIT', 'Page was cached.');
    $this->assertContains('cookie', explode(',', strtolower($this->drupalGetHeader('Vary'))), 'Vary header was sent.', TRUE);
    $this->assertEqual($this->drupalGetHeader('Cache-Control'), 'max-age=300, public', 'Cache-Control header was sent.');
    $this->assertEqual($this->drupalGetHeader('Expires'), 'Sun, 19 Nov 1978 05:00:00 GMT', 'Expires header was sent.');
    $this->assertEqual($this->drupalGetHeader('Foo'), 'bar', 'Custom header was sent.');
    // Check replacing default headers.
    $this->drupalGet('system-test/set-header', [
        'query' => [
            'name' => 'Expires',
            'value' => 'Fri, 19 Nov 2008 05:00:00 GMT',
        ],
    ]);
    $this->assertEqual($this->drupalGetHeader('Expires'), 'Fri, 19 Nov 2008 05:00:00 GMT', 'Default header was replaced.');
    $this->drupalGet('system-test/set-header', [
        'query' => [
            'name' => 'Vary',
            'value' => 'User-Agent',
        ],
    ]);
    $this->assertContains('user-agent', explode(',', strtolower($this->drupalGetHeader('Vary'))), 'Default header was replaced.');
    // Check that authenticated users bypass the cache.
    $user = $this->drupalCreateUser();
    $this->drupalLogin($user);
    $this->drupalGet('system-test/set-header', [
        'query' => [
            'name' => 'Foo',
            'value' => 'bar',
        ],
    ]);
    $this->assertNull($this->drupalGetHeader('X-Drupal-Cache'), 'Caching was bypassed.');
    $this->assertStringNotContainsString('cookie', $this->drupalGetHeader('Vary'), 'Vary: Cookie header was not sent.', TRUE);
    $this->assertEqual($this->drupalGetHeader('Cache-Control'), 'must-revalidate, no-cache, private', 'Cache-Control header was sent.');
    $this->assertEqual($this->drupalGetHeader('Expires'), 'Sun, 19 Nov 1978 05:00:00 GMT', 'Expires header was sent.');
    $this->assertEqual($this->drupalGetHeader('Foo'), 'bar', 'Custom header was sent.');
    // Until bubbling of max-age up to the response is supported, verify that
    // a custom #cache max-age set on an element does not affect page max-age.
    $this->drupalLogout();
    $this->drupalGet('system-test/cache_maxage_page');
    $this->assertEqual($this->drupalGetHeader('Cache-Control'), 'max-age=300, public');
}