public function testOnRemoveParentRemoveChild() { $configuration = new Configuration(eVersion::V_2_2_10()); $parent_name = 'source1'; $child_name = 'source2'; $parent = $configuration->addSource($parent_name); $child = $configuration->addSource($child_name, $parent_name); $parent->delete(); static::assertTrue($child->isDeleted()); }