function BigPipeInterfacePreviewThemeSuggestionsTest::testBigPipeThemeHookSuggestions

Tests template suggestions from big_pipe_theme_suggestions_big_pipe_interface_preview().

File

core/modules/big_pipe/tests/src/Kernel/BigPipeInterfacePreviewThemeSuggestionsTest.php, line 63

Class

BigPipeInterfacePreviewThemeSuggestionsTest

Tests the big_pipe_theme_suggestions_big_pipe_interface_preview() function.

Namespace

Code

public function testBigPipeThemeHookSuggestions() : void {
  $entity = $this->controller
    ->create([
    'id' => 'test_block1',
    'theme' => 'stark',
    'plugin' => 'system_powered_by_block',
  ]);
  $entity->save();
  // Test the rendering of a block.
  $block = Block::load('test_block1');
  // Using the BlockViewBuilder we will be able to get a lovely
  // #lazy_builder callback assigned.
  $build = $this->blockViewBuilder
    ->view($block);
  $variables = [];
  // In turn this is what createBigPipeJsPlaceholder() uses to
  // build the BigPipe JS placeholder render array which is used as input
  // for big_pipe_theme_suggestions_big_pipe_interface_preview().
  $variables['callback'] = $build['#lazy_builder'][0];
  $variables['arguments'] = $build['#lazy_builder'][1];
  $suggestions = big_pipe_theme_suggestions_big_pipe_interface_preview($variables);
  $suggested_id = preg_replace('/[^a-zA-Z0-9]/', '_', $block->id());
  $this->assertSame([
    'big_pipe_interface_preview__block',
    'big_pipe_interface_preview__block__' . $suggested_id,
    'big_pipe_interface_preview__block__full',
  ], $suggestions);
}