public void GetTest_Fail() { //Arrange var riskService = new RiskEvaluationService(new CuttimeRangeInfoEntity() { StartTime = new DateTime(2018, 10, 08, 10, 30, 00), EndTime = new DateTime(2018, 10, 08, 18, 30, 00), }); string uid = null; bool?expected = false; //Actual bool?actual = null; try { riskService.Get(uid); } catch (NotImplementedException e) { actual = false; } //Assert Assert.AreEqual(expected, actual); }