function RendererPlaceholdersTest::testRenderLazyBuilderPreview

Tests the creation of an element with a lazy_builder_preview.

@covers ::render @covers ::doRender @covers \Drupal\Core\Render\RenderCache::get @covers ::replacePlaceholders

File

core/tests/Drupal/Tests/Core/Render/RendererPlaceholdersTest.php, line 1060

Class

RendererPlaceholdersTest

@coversDefaultClass \Drupal\Core\Render\Renderer @covers \Drupal\Core\Render\RenderCache @covers \Drupal\Core\Render\PlaceholderingRenderCache @group Render

Namespace

Code

public function testRenderLazyBuilderPreview() : void {
    $this->setUpRequest();
    $this->setupMemoryCache();
    $this->renderCache = new TestPlaceholderingRenderCache($this->requestStack, $this->cacheFactory, $this->cacheContextsManager, $this->placeholderGenerator);
    $this->renderer = new Renderer($this->callableResolver, $this->themeManager, $this->elementInfo, $this->placeholderGenerator, $this->renderCache, $this->requestStack, $this->rendererConfig);
    $this->cacheContextsManager
        ->expects($this->any())
        ->method('convertTokensToKeys')
        ->willReturnArgument(0);
    $this->callableResolver
        ->expects($this->any())
        ->method('getCallableFromDefinition')
        ->willReturnArgument(0);
    $test_element = $this->generatePlaceholderWithLazyBuilderPreview();
    $element1 = $element2 = $test_element;
    // Render the element twice so that it is in the render cache.
    $result = $this->renderer
        ->renderRoot($element1);
    $result = $this->renderer
        ->renderRoot($element2);
    $placeholder_string = (string) $this->renderCache->placeholderElements[0]['#markup'];
    $this->assertSame($this->renderCache->placeholderElements[0]['#attached']['placeholders'][$placeholder_string]['#preview'], [
        '#markup' => 'Lazy Builder Preview',
    ]);
}