public void Initialize_OnNavigated_GetsUserProfile() { //Arrange var user = new User { UserName = "******" }; jiraServiceMock.Setup(x => x.GetUserProfileAsync(It.IsAny <string>())).Returns(Task.FromResult(user)); //Act userProfileViewModel.Initialize(); //Assert Assert.IsTrue(userProfileViewModel.IsDataLoaded); Assert.IsNotNull(userProfileViewModel.User); }