I am building an SDK using kotlin multiplatform fo...

# mockk

[Vivek Mittal]

I am building an SDK using kotlin multiplatform for iOS and Android. Most if not all of my code is in commonMain.

Trying to use MocKK library for mocking. Running the tests I am seeing some issues. If I run tests on Android target/task it all works, same is the case on using ./gradlew test

If I select iosSimulatorArm64 as target/task, I get test event was not received.
If I run ./gradlew allTest I get build failed with error - no matching variant of io.mockkMocKK1.11.0.

I have io.mockkMocKK1.11.0 in iosXXXTest, AndroidUnitTest & io.mockkmockk common1.10.0 in commonTest.

Is this not supported?

[Adam S]

MockK only supports JVM targets

[Vivek Mittal]

Anything in pipeline?
Any alternates, you would suggest?

[Adam S]

I haven’t seen any significant change in MockK functionality for a few years. Maybe there’s something planned, but I haven’t heard about it. The build config is structured so implementing another target would be possible, but it would be a lot of work.

There are a couple of other mocking libraries I’ve got my eye on, but I haven’t used.

• https://github.com/bitPogo/kmock
• https://github.com/mockative/mockative
The last time I checked I found they’re a little more limited than MockK - they require that the mocked instances are interfaces

[Vivek Mittal]

Mocked instance as interface is no issue. I am concerned more about running tests on both the targets. I have had issues with mockmp before I explored MocKK.

[Adam S]

oh I haven’t looked at MockMP yet. What problems did you find?

[Vivek Mittal]

It uses Google KSP which doesn't support common code or common testing

[Adam S]

ah well, I think the same is true for both KMock and Mockative

[Vivek Mittal]

I wonder when we would have better libraries for kmm