@@ -1047,6 +1049,50 @@ public function testRenderChildrenPlaceholdersDifferentArguments() {
$this->assertSame($element['#attached']['drupalSettings'],$expected_js_settings,'#attached is modified; both the original JavaScript setting and the ones added by each #lazy_builder callback exist.');
}
/**
* Tests the creation of an element with a lazy_builder_preview.