function PlaceholderGeneratorTest::testRenderPlaceholdersDifferentSortedContextsTags

Tests the creation of an element with a #lazy_builder callback.

Between two renders neither the cache contexts nor tags sort should change. A placeholder should generate the same hash, so it is not rendered twice.

@covers ::createPlaceholder

File

core/tests/Drupal/Tests/Core/Render/PlaceholderGeneratorTest.php, line 50

Class

PlaceholderGeneratorTest

@coversDefaultClass \Drupal\Core\Render\PlaceholderGenerator @group Render

Namespace

Code

public function testRenderPlaceholdersDifferentSortedContextsTags() : void {
    $contexts_1 = [
        'user',
        'foo',
    ];
    $contexts_2 = [
        'foo',
        'user',
    ];
    $tags_1 = [
        'current-temperature',
        'foo',
    ];
    $tags_2 = [
        'foo',
        'current-temperature',
    ];
    $test_element = [
        '#cache' => [
            'max-age' => Cache::PERMANENT,
        ],
        '#lazy_builder' => [
            'Drupal\\Tests\\Core\\Render\\PlaceholdersTest::callback',
            [
                'foo' => TRUE,
            ],
        ],
    ];
    $test_element['#cache']['contexts'] = $contexts_1;
    $test_element['#cache']['tags'] = $tags_1;
    $placeholder_element1 = $this->placeholderGenerator
        ->createPlaceholder($test_element);
    $test_element['#cache']['contexts'] = $contexts_2;
    $test_element['#cache']['tags'] = $tags_1;
    $placeholder_element2 = $this->placeholderGenerator
        ->createPlaceholder($test_element);
    $test_element['#cache']['contexts'] = $contexts_1;
    $test_element['#cache']['tags'] = $tags_2;
    $placeholder_element3 = $this->placeholderGenerator
        ->createPlaceholder($test_element);
    // Verify placeholder and specially hash are same with different contexts
    // order.
    $this->assertSame((string) $placeholder_element1['#markup'], (string) $placeholder_element2['#markup']);
    // Verify placeholder and specially hash are same with different tags order.
    $this->assertSame((string) $placeholder_element1['#markup'], (string) $placeholder_element3['#markup']);
}