Hey everyone, I'm planning to add unit and integration testing to my KMP Project (Android and iOS), ...

# multiplatform

[Vaibhav Jaiswal]

Hey everyone, I'm planning to add unit and integration testing to my KMP Project (Android and iOS), which has Multi-module architecture, uses Ktor, Coroutines, Flows, Koin, Decompose etc

As I am new to testing
Can you all suggest me which testing frameworks and library I must be using..
Kotlin Test vs Kotest and any other must have libraries for testing

[François]

At least, Kotest plugin doesn’t support KMP module.
The IntelliJ Kotest plugin does not support running common, native or JS tests from the IDE. You will need to use the gradle check task.

[François]

it’s working but the dev experience is not optimal

[François]

Kotlin Test is working fine and you can complete with code overage https://github.com/Kotlin/kotlinx-kover (only test targeting the JVM)

[François]

For testing coroutine https://github.com/cashapp/turbine is also a good tool

[Vaibhav Jaiswal]

Thanks a lot for these

Is Kotlin Test similar to Kotest in terms of functionality?
Any Pros and Cons ?

[François]

Kotlin Test is basically JUnit testing

[François]

Kotest can do more complex scenario, BDD and more

[Vaibhav Jaiswal]

I see, and In Kotlin-Test all these complex scenarios needs to be done manually?

[François]

kind of yes, https://kotlinlang.org/api/latest/kotlin.test/

[Vaibhav Jaiswal]

Thanks, I'll check these out

[François]

you need to complete with other tools like turbine or https://kotlinlang.org/api/kotlinx.coroutines/kotlinx-coroutines-test/

[Vaibhav Jaiswal]

Is there anything apart from running test via IDE that Kotest cannot do, which Kotlin-Test can?

[François]

Kotest-Test give basic testing capabilities (Annotation/Assertion and other small tools), it’s a lightweight JUnit.

[François]

Kotest better integration with third party libs, different writing way to make test and a lot of stuff.

[Vaibhav Jaiswal]

Yeah, I was going through the extensions, non-deterministic testing in Kotest, It looks quite handy in a lot of scenarios

[François]

Yes sure, it has a lot of builtin tools.
Kotlin-Test need more external dependencies, it depends on what your code uses.

[François]

For more tools, you can search inside this list https://github.com/AAkira/Kotlin-Multiplatform-Libraries?tab=readme-ov-file#test

[Vaibhav Jaiswal]

Thanks a lot

[Hristijan]

+1 for kotlin test