private function setMockTagsService()
{
$mockTagsService = $this->getMockBuilder(TagsService::class)->disableOriginalConstructor()->setMethods(['getAllTagGroups', 'saveTagGroup', 'deleteTagGroupById'])->getMock();
$mockTagsService->expects($this->any())->method('getAllTagGroups')->with('handle')->willReturn([]);
$this->setComponent(Craft::app(), 'tags', $mockTagsService);
return $mockTagsService;
}