only in patch2: unchanged: --- a/core/tests/Drupal/KernelTests/Core/Render/RenderTest.php +++ b/core/tests/Drupal/KernelTests/Core/Render/RenderTest.php @@ -16,7 +16,7 @@ class RenderTest extends KernelTestBase { * * @var array */ - public static $modules = array('system', 'common_test'); + public static $modules = array('system', 'common_test', 'theme_test'); /** * Tests theme preprocess functions being able to attach assets. @@ -44,6 +44,23 @@ function testDrupalRenderThemePreprocessAttached() { } /** + * Ensures that render array children are processed correctly. + */ + public function testRenderChildren() { + // Ensure that #prefix and #suffix is only being printed once since that is + // the behaviour the caller code expects. + $build = [ + '#type' => 'container', + '#theme' => 'theme_test_render_element_children', + '#prefix' => 'kangaroo', + '#suffix' => 'kitten', + ]; + $this->render($build); + $this->removeWhiteSpace(); + $this->assertNoRaw('
kangarookitten
'); + } + + /** * Tests that we get an exception when we try to attach an illegal type. */ public function testProcessAttached() { only in patch2: unchanged: --- a/core/tests/Drupal/Tests/Core/Render/RendererTest.php +++ b/core/tests/Drupal/Tests/Core/Render/RendererTest.php @@ -363,6 +363,25 @@ public function providerTestRenderBasic() { }; $data[] = [$build, 'baz', $setup_code]; + // #theme is implemented but #render_children is TRUE. In this case the + // calling code is expecting only the children to be rendered. #prefix and + // #suffix should not be inherited for the children. + $build = [ + '#theme' => 'common_test_foo', + '#children' => '', + '#prefix' => 'kangaroo', + '#suffix' => 'unicorn', + '#render_children' => TRUE, + 'child' => [ + '#markup' => 'kitten', + ], + ]; + $setup_code = function() { + $this->themeManager->expects($this->never()) + ->method('render'); + }; + $data[] = [$build, 'kitten', $setup_code]; + return $data; }