Same name in other branches

1. 9 core/tests/Drupal/Tests/Core/Render/BubbleableMetadataTest.php \Drupal\Tests\Core\Render\BubbleableMetadataTest::testMerge()
2. 8.9.x core/tests/Drupal/Tests/Core/Render/BubbleableMetadataTest.php \Drupal\Tests\Core\Render\BubbleableMetadataTest::testMerge()
3. 11.x core/tests/Drupal/Tests/Core/Render/BubbleableMetadataTest.php \Drupal\Tests\Core\Render\BubbleableMetadataTest::testMerge()

@covers ::merge @dataProvider providerTestMerge

This only tests at a high level, because it reuses existing logic. Detailed tests exist for the existing logic:

See also

\Drupal\Tests\Core\Cache\CacheTest::testMergeTags()

\Drupal\Tests\Core\Cache\CacheTest::testMergeMaxAges()

\Drupal\Tests\Core\Cache\CacheContextsTest

\Drupal\Tests\Core\Render\RendererPlaceholdersTest

testMergeAttachmentsLibraryMerging()

testMergeAttachmentsFeedMerging()

testMergeAttachmentsHtmlHeadMerging()

testMergeAttachmentsHtmlHeadLinkMerging()

testMergeAttachmentsHttpHeaderMerging()

File

core/tests/Drupal/Tests/Core/Render/BubbleableMetadataTest.php, line 36

Class

BubbleableMetadataTest

@coversDefaultClass \Drupal\Core\Render\BubbleableMetadata @group Render

Namespace

Drupal\Tests\Core\Render

Code

public function testMerge(BubbleableMetadata $a, CacheableMetadata $b, BubbleableMetadata $expected) : void {
    // Verify that if the second operand is a CacheableMetadata object, not a
    // BubbleableMetadata object, that BubbleableMetadata::merge() doesn't
    // attempt to merge assets.
    if (!$b instanceof BubbleableMetadata) {
        $renderer = $this->getMockBuilder('Drupal\\Core\\Render\\Renderer')
            ->disableOriginalConstructor()
            ->getMock();
    }
    else {
        $renderer = $this->getMockBuilder('Drupal\\Core\\Render\\Renderer')
            ->disableOriginalConstructor()
            ->onlyMethods([])
            ->getMock();
    }
    $cache_contexts_manager = $this->getMockBuilder('Drupal\\Core\\Cache\\Context\\CacheContextsManager')
        ->disableOriginalConstructor()
        ->getMock();
    $cache_contexts_manager->method('assertValidTokens')
        ->willReturn(TRUE);
    $container = new ContainerBuilder();
    $container->set('cache_contexts_manager', $cache_contexts_manager);
    $container->set('renderer', $renderer);
    \Drupal::setContainer($container);
    $this->assertEqualsCanonicalizing($expected, $a->merge($b));
}

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