This ticket tracks classes that are lacking in test coverage. All of this code has been stable for a long time, but it's a good way to get familiar with the Arrow codebase.

If you're looking to contribute to Arrow, and want a small piece of work writing some tests is a good way to get started. If you're not sure if a function, or code branch, is missing coverage in a certain file you can run ./gradlew koverHtmlReport and open the resulting report.

Or feel free to pick any of the items listed below and add missing tests for the .kt file.

Arrow Core

• currying.kt missing tests for almost all functions in progress by @lgtout
• [Either.kt]](https://github.com/arrow-kt/arrow/blob/main/arrow-libs/core/arrow-core/src/commonMain/kotlin/arrow/core/Either.kt) only has 50% coverage in progress by @poseidon2060
• [Ior.kt]](https://github.com/arrow-kt/arrow/blob/main/arrow-libs/core/arrow-core/src/commonMain/kotlin/arrow/core/Ior.kt) only has 70% coverage in progress by @gutiory
• [Iterable.kt]](https://github.com/arrow-kt/arrow/blob/main/arrow-libs/core/arrow-core/src/commonMain/kotlin/arrow/core/Iterable.kt) only has 50% coverage.
• [MapKt.kt]](https://github.com/arrow-kt/arrow/blob/main/arrow-libs/core/arrow-core/src/commonMain/kotlin/arrow/core/Iterable.kt) only has 16% coverage.
• [NonEmptyList.kt]](https://github.com/arrow-kt/arrow/blob/main/arrow-libs/core/arrow-core/src/commonMain/kotlin/arrow/core/NonEmptyList.kt) only has 50% coverage. @l2hyunwoo
• [Option.kt]](https://github.com/arrow-kt/arrow/blob/main/arrow-libs/core/arrow-core/src/commonMain/kotlin/arrow/core/NonEmptyList.kt) only has 75% coverage in progress by @swdevsm
• [partials.kt]](https://github.com/arrow-kt/arrow/blob/main/arrow-libs/core/arrow-core/src/commonMain/kotlin/arrow/core/partials.kt) only has 2,4% coverage.
• Missing tests for utilities TupleX.kt