public async Task ChangeEmailStatusFromClose_Test() { var emailServiceMock = new Mock <IEmailService>().Object; var concreteMailServiceMock = new Mock <IConcreteMailService>().Object; var searchServiceMock = new Mock <ISearchService>().Object; var encodeDecodeServiceMock = new Mock <IEncodeDecodeService>().Object; var controller = new EmailController(emailServiceMock, concreteMailServiceMock, searchServiceMock, encodeDecodeServiceMock); var setEmailStatusFromCloseToNew = "3 TestGmailId"; var result = await controller.ChangeEmailStatusFromClose(setEmailStatusFromCloseToNew); Assert.IsInstanceOfType(result, typeof(JsonResult)); }