ClassCastException in wasmJs tests with Kotlin 2.2.20 #111
Description
Bug Report
Several wasmJs test cases crash with ClassCastException: Cannot cast null to [Type]: target type is non-nullable when using Mokkery 2.10.0. This issue only affects wasmJs target, not regular JS target.
Reproduction
Repository: https://github.com/CXwudi/realworld-compose-http4k-example-app/tree/de6f349d6a437faf9387de36f6707cbb47b58438
Steps to reproduce:
- Revert Mokkery version from 3.0.0-Beta2 to 2.10.0 in
build-src/libs.versions.toml:
pluginDep-mokkery = "dev.mokkery:mokkery-gradle:2.10.0"- Run tests in
conduit-frontendfolder:
./gradlew :frontend-decompose-logic:wasmJsBrowserTest --debug > log.logStack Trace
ClassCastException: Cannot cast null to UserUpdateDto: target type is non-nullable
at kotlin.createJsError(C:/Users/<user>/AppData/Local/Temp/_karma_webpack_286865/commons.js:13727)
at <conduit-frontend:frontend-decompose-logic_test>.kotlin.createJsError__externalAdapter(C:/Users/<user>/AppData/Local/Temp/_karma_webpack_286865/25f752483807ee4a5a0f.wasm)
at <conduit-frontend:frontend-decompose-logic_test>.kotlin.wasm.internal.THROW_CCE_WITH_INFO(C:/Users/<user>/AppData/Local/Temp/_karma_webpack_286865/25f752483807ee4a5a0f.wasm)
at slambda.invoke(C:/Users/<user>/AppData/Local/Temp/_karma_webpack_286865/25f752483807ee4a5a0f.wasm)
at slambda.invoke(C:/Users/<user>/AppData/Local/Temp/_karma_webpack_286865/25f752483807ee4a5a0f.wasm)
Environment
- Mokkery: 2.10.0 → 3.0.0-Beta2 (fixed)
- Kotlin: 2.2.20
- Platform: Windows 10, ChromeHeadless 129.0.0.0
Notes
- Only 5 test cases affected in wasmJs target
- Same tests pass in regular JS target
- Fixed by upgrading to 3.0.0-Beta2