Mock testing CognitoUser instance

[WajahatAliAbid]

Is there a way to mock test CognitoUser instance using moq, from my understanding the method StartWithAdminNoSrpAuthAsync isn't virtual so it cannot be mocked. How can we mock this functionality?

var cognitoUser = new Mock<CognitoUser>(It.IsAny<string>(), It.IsAny<string>(), userPool.Object, Mock.Of<IAmazonCognitoIdentityProvider>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<Dictionary<string, string>>());
cognitoUser.Setup(x=> x.StartWithAdminNoSrpAuthAsync(Mock.Of<InitiateAdminNoSrpAuthRequest>())).ReturnsAsync(It.IsAny<AuthFlowResponse>());

Error screenshot

[klaytaybai]

Hi @WajahatAliAbid, thanks for the feedback. I agree that it would be nice if this was supported more simply. You should be able to mock it if you write a subclass to wrap around the CognitoUser class. You can then just return the invocations of the base methods and mock on the new class and its methods.

        public virtual new Task<AuthFlowResponse> StartWithAdminNoSrpAuthAsync(InitiateAdminNoSrpAuthRequest adminAuthRequest)
        {
            return base.StartWithAdminNoSrpAuthAsync(adminAuthRequest);
        }

[WajahatAliAbid]

Hi @klaytaybai
I tested it with using a custom subclass of CognitoUser

public class CustomCognitoUser : CognitoUser
    {
        public CustomCognitoUser(string userID, string clientID, CognitoUserPool pool, IAmazonCognitoIdentityProvider provider, string? clientSecret = null, string? status = null, string? username = null, Dictionary<string, string>? attributes = null) : base(userID, clientID, pool, provider, clientSecret, status, username, attributes)
        {
        }
        public virtual new Task<AuthFlowResponse> StartWithAdminNoSrpAuthAsync(InitiateAdminNoSrpAuthRequest adminAuthRequest)
        {
            return base.StartWithAdminNoSrpAuthAsync(adminAuthRequest);
        }
    }

This issue has been resolved. Thanks for your feedback. I'm looking forward to future releases of aws-aspnet-cognito-identity-provider with support for mocking without writing a wrapper class for it.

[WajahatAliAbid]

@klaytaybai can you look at this PR please?

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