การจัดวาง Test: commonTest และส่วนที่เกี่ยวข้อง

Just like your main code, tests live in their own source sets, mirroring commonMain, androidMain and iosMain.

commonTest holds tests that run on every platform. Write a test once and verify your shared logic everywhere. ✅

Common tests use the multiplatform kotlin.test library, which gives you assertions that work on all targets.

A common test reads like any unit test, using a portable assertEquals to check shared behavior.

Need a JVM-only test? Put it in androidUnitTest, where you can use JUnit and Android-specific helpers.

iOS-specific tests live in iosTest. They run on the simulator using Kotlin/Native's test runner.

A test in commonTest executes on both the Android and iOS test tasks, catching platform differences early.

From the terminal, a single Gradle task runs the JVM-side tests, including the common ones.

Another task runs the same shared tests on the iOS simulator target, confirming parity.

Testing shared logic in commonTest means one suite guards both apps, so a fix is proven on every platform at once.

Mirror your main sets: common logic gets common tests, platform code gets platform tests. The structure stays predictable.

Pick the right test home.

Tests mirror the source sets: commonTest for shared, androidUnitTest and iosTest for platform-specific checks.