Hi, I'm new to Azure IoT Hubs and Azure Functions and also new to Unit Testing. Is there any way to do an unit test for azure function using xUnit where I could mock my ServiceClient and RegistryManager objects?

Hello @Muhammad Guruh Ajinugroho , both classes do not implement a base class or interface: public class RegistryManager : IDisposable public class ServiceClient : IDisposable It works with the Factory method design pattern, not with constructors. Thus, writing unit tests will be hard. Although still in preview, please check out Microsoft Azure IoT SDKs for .NET v2 Preview Release It seems this new V2 version better suites your needs: Additionally, all clients can be created using a constructor; factory methods are mostly gone. This enables easier discovery of client initialization as well as unit test mocking. If the response helped, do "Accept Answer". If it doesn't work, please let us know the progress. All community members with similar issues will benefit by doing so. Your contribution is highly appreciated.

Create an Unit Test for Azure IoT Hub Function with xUnit and Moq

Accepted answer

Sander van de Velde | MVP 32,556 Reputation points MVP

2023-02-15T00:40:45.0966667+00:00
Hello @Muhammad Guruh Ajinugroho ,

both classes do not implement a base class or interface:

public class RegistryManager : IDisposable public class ServiceClient : IDisposable

It works with the Factory method design pattern, not with constructors.

Thus, writing unit tests will be hard.

Although still in preview, please check out Microsoft Azure IoT SDKs for .NET v2 Preview Release

It seems this new V2 version better suites your needs:

Additionally, all clients can be created using a constructor; factory methods are mostly gone. This enables easier discovery of client initialization as well as unit test mocking.

If the response helped, do "Accept Answer". If it doesn't work, please let us know the progress. All community members with similar issues will benefit by doing so. Your contribution is highly appreciated.
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Muhammad Guruh Ajinugroho 100 Reputation points

2023-02-15T15:09:38.81+00:00

Is there any documentations/guides/cases on how we could do the unit test mocking with the SDKs v2 for the RegistryManager and ServiceClient yet?

Sander van de Velde | MVP 32,556 Reputation points MVP

2023-02-15T22:57:54.73+00:00

Hello @Muhammad Guruh Ajinugroho ,

unfortunately, there is no documentation specifically.

You can check out the GitHub repo for more details. You can drop an issue with this as a request.

LeelaRajeshSayana-MSFT 15,241 Reputation points Microsoft Employee

2023-03-13T20:26:16.4466667+00:00

@Muhammad Guruh Ajinugroho We still have not heard back from you. Just wanted to check if the above information was helpful? If it answers your query, please do click Accept Answer and Yes for this answer, as it might be beneficial to other community members reading this thread. And, if you have any further query do let us know. Thank you

Muhammad Guruh Ajinugroho 100 Reputation points

2023-04-13T09:26:19.39+00:00

Hi @LeelaRajeshSayana-MSFT Thanks for the ping. Currently I was able to do the mock unit test but decided to skip for both ServiceClient and RegistryManager because it was out of the test scope. Sorry for the delayed response. I'll close this ticket and accept the answer.
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Create an Unit Test for Azure IoT Hub Function with xUnit and Moq

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