function RendererPlaceholdersTest::testNonScalarLazyBuilderCallbackContext

Tests non scalar lazy builder callback context.

@legacy-covers ::render @legacy-covers ::doRender

File

core/tests/Drupal/Tests/Core/Render/RendererPlaceholdersTest.php, line 895

Class

RendererPlaceholdersTest

Tests Drupal\Core\Render\Renderer.

Namespace

Code

public function testNonScalarLazyBuilderCallbackContext() : void {
  $element = [];
  $element['#lazy_builder'] = [
    '\\Drupal\\Tests\\Core\\Render\\PlaceholdersTest::callback',
    [
      'string' => 'foo',
      'bool' => TRUE,
      'int' => 1337,
      'float' => 3.14,
      'null' => NULL,
      // Array is not one of the scalar types.
'array' => [
        'hi!',
      ],
    ],
  ];
  $this->expectException(\AssertionError::class);
  $this->expectExceptionMessage("A #lazy_builder callback's context may only contain scalar values or NULL.");
  $this->renderer
    ->renderRoot($element);
}