public void TestDeleteTopics() { List <string> listTopicId = new List <string>(); listTopicId.Add("da8f7af6sffa5af67asf7"); listTopicId.Add("da8f7af6sffa5af67asf3"); mockTopicService.Setup(x => x.DeleteMany(listTopicId)).Returns(true); var topicController = new TopicController(mockTopicService.Object); IActionResult isDelete = topicController.DeleteTopics(listTopicId); var type = isDelete.GetType(); Assert.AreEqual(type.Name, "OkObjectResult"); }