Add exhaustive tests for JsonValue and JsonKey usage in value class

[k163377]

SSIA

[Copilot]

Pull Request Overview

This PR adds comprehensive tests for serialization behavior of Kotlin inline value classes using Jackson’s @JsonValue and @JsonKey annotations.

• Introduces JsonValue tests for various primitive and object inline classes, covering direct and property-wrapped serialization, including nullability.
• Introduces JsonKey tests for map key serialization using inline classes, covering primitive and object types, including null handling.

Reviewed Changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
src/test/kotlin/.../jsonValue/TwoUnitPrimitiveTest.kt	Tests @JsonValue on two-unit Long value classes
src/test/kotlin/.../jsonValue/PrimitiveTest.kt	Tests @JsonValue on single-unit Int value classes
src/test/kotlin/.../jsonValue/NullablePrimitiveTest.kt	Tests @JsonValue on nullable Int value classes
src/test/kotlin/.../jsonValue/NullableObjectTest.kt	Tests @JsonValue on nullable String value classes
src/test/kotlin/.../jsonValue/NonNullObjectTest.kt	Tests @JsonValue on non-null String value classes
src/test/kotlin/.../jsonKey/TwoUnitPrimitiveTest.kt	Tests @JsonKey on two-unit Long keys in maps
src/test/kotlin/.../jsonKey/PrimitiveTest.kt	Tests @JsonKey on single-unit Int keys in maps
src/test/kotlin/.../jsonKey/NullablePrimitiveTest.kt	Tests @JsonKey on nullable Int keys in maps
src/test/kotlin/.../jsonKey/NullableObjectTest.kt	Tests @JsonKey on nullable String keys in maps
src/test/kotlin/.../jsonKey/NonNullObjectTest.kt	Tests @JsonKey on non-null String keys in maps

Comments suppressed due to low confidence (3)

src/test/kotlin/io/github/projectmapk/jackson/module/kogera/zIntegration/ser/valueClass/jsonKey/NullablePrimitiveTest.kt:17

• [nitpick] The test method name test is too generic; consider renaming it to reflect its scenario, e.g., nullablePrimitiveKeySerializesCorrectly.

fun test() {

src/test/kotlin/io/github/projectmapk/jackson/module/kogera/zIntegration/ser/valueClass/jsonKey/NullableObjectTest.kt:17

• [nitpick] Consider renaming this test method to something more descriptive (e.g., nullableObjectKeyModifiedValue) for better clarity.

fun test() {

src/test/kotlin/io/github/projectmapk/jackson/module/kogera/zIntegration/ser/valueClass/jsonKey/PrimitiveTest.kt:29

• Consider adding a test that asserts the expected exception when @JsonKey returns null, ensuring the library surfaces the error as intended.

// The case of returning null as a key is unnecessary because it will result in an error