public async void Test_GivenAUser_WhenSetEmail_ThenResponseIsNotAltered() { userStoreMock.Setup(mock => mock.SetEmailAsync(It.IsAny <CognitoUser>(), It.IsAny <string>(), It.IsAny <CancellationToken>())).Returns(Task.FromResult(0)).Verifiable(); userStoreMock.Setup(mock => mock.UpdateAsync(It.IsAny <CognitoUser>(), It.IsAny <CancellationToken>())).Returns(Task.FromResult(IdentityResult.Success)).Verifiable(); var output = await userManager.SetEmailAsync(GetCognitoUser(), "*****@*****.**").ConfigureAwait(false); Assert.Equal(IdentityResult.Success, output); userStoreMock.Verify(); }