Hello. What is the standard way to write unit test...

# kotlin-native

[Dmitry Kandalov]

Hello. What is the standard way to write unit tests for kotlin native code? I can see that assertEquals() works in main but not sure how to run tests with CLion test runner (or gradle or cmake).

[thevery]

check https://github.com/JetBrains/kotlin-mpp-example/pull/1 for iOS (and OSX)

[Dmitry Kandalov]

From what I can see the CalculatorTest runs on jvm, not native. And I’m trying to run tests in kotlin native without jvm (or multiplatform).

[thevery]

this pullrequest is exactly about running native (non-jvm) tests

[thevery]

see also https://github.com/JetBrains/kotlin-native/issues/1620#issuecomment-391602982

[gildor]

This is how you can configure Gradle plugin to run native tests
https://github.com/gildor/knel/blob/master/native/build.gradle.kts#L10-L22

just put your tests to src/test/kotlin dir.
Also this config works with tests from common module

[Dmitry Kandalov]

@gildor I got it working eventually, thank you. The only problem is that it seems tests can’t depend on main program without introducing a library.

[thevery]

Same here ^

[thevery]

Afair you can't use enableMultiplatform=true in program, only in library/framework

[Konstantin Petrukhnov]

Any suggestions to testing kotlin code(crossplatform) inside Swift app (as it behave sometimes differently in ios/jvm)?

[Konstantin Petrukhnov]

library imported as pod

[thevery]

@Konstantin Petrukhnov native-test binary should be enough I think, otherwise you have to copy-paste tests

[Konstantin Petrukhnov]

@thevery any link with explanation?

[thevery]

@Konstantin Petrukhnov explanation for what?

[Konstantin Petrukhnov]

"native-test binary "

[nicola.de.fiorenze]

Here https://github.com/defio/KotlinNativeExperiments I've setup the unit tests also into the common module adding

testCompile "org.jetbrains.kotlin:kotlin-test-common:$kotlin_version" 
testCompile "org.jetbrains.kotlin:kotlin-test-annotations-common:$kotlin_version"

in the common module build.gradle file

After this, to run them,

testCompile "org.jetbrains.kotlin:kotlin-test-junit:$kotlin_version"
testCompile "org.jetbrains.kotlin:kotlin-test:$kotlin_version"

into the build.gradle of the android module and

konanArtifacts {
    
    //... STUFF ...

    program('NativeTest') {
        srcDir 'src/test/kotlin'
        commonSourceSet 'test'
        libraries {
            artifact 'NativeLib'
        }
        extraOpts '-tr'
    }
}

task test(dependsOn: 'compileKonanNativeTestIos_x64', type: Exec) {
    def textExecutable = tasks["compileKonanNativeTestIos_x64"].artifactPath
    commandLine("xcrun", "simctl", "spawn", "iPhone 8", textExecutable)
}

into the build.gradle of the iOS module.
To run the tests ./gradlew :kotlinLibrary:android:test or ./gradlew :kotlinLibrary:ios:test 😉

Here the full description: https://github.com/defio/KotlinNativeExperiments#unit-tests-in-the-common-module

[thevery]

@Konstantin Petrukhnov https://github.com/JetBrains/kotlin-mpp-example/pull/1

[thevery]

first comment in this thread actually)

[Dmitry Kandalov]

A bit unrelated to the thread but does anyone have Kotlin Native tests working from CLion (i.e. using IDE test runner)?