Move tests from serialization and functions completely to kotlin.test

arrow-libs/core/arrow-core-serialization/build.gradle.kts

@@ -4,7 +4,8 @@ plugins {
   id(libs.plugins.kotlin.multiplatform.get().pluginId)
   alias(libs.plugins.arrowGradleConfig.kotlin)
   alias(libs.plugins.arrowGradleConfig.publish)
-  alias(libs.plugins.kotest.multiplatform)
+  alias(libs.plugins.kotlinx.kover)
+  alias(libs.plugins.spotless)
   id(libs.plugins.kotlinx.serialization.get().pluginId)
 }
 
@@ -25,17 +26,10 @@ kotlin {
         implementation(libs.kotlinx.serializationJson)
         implementation(libs.kotlin.test)
         implementation(libs.coroutines.test)
-        implementation(libs.kotest.frameworkEngine)
         implementation(libs.kotest.assertionsCore)
         implementation(libs.kotest.property)
       }
     }
-
-    jvmTest {
-      dependencies {
-        runtimeOnly(libs.kotest.runnerJUnit5)
-      }
-    }
   }
 
   jvm {

arrow-libs/core/arrow-core-serialization/src/commonTest/kotlin/arrow/core/serialization/BackAgainTest.kt

@@ -13,17 +13,18 @@ import arrow.core.Ior
 import arrow.core.NonEmptyList
 import arrow.core.NonEmptySet
 import arrow.core.Option
-import io.kotest.core.spec.style.StringSpec
+import io.kotest.matchers.shouldBe
 import io.kotest.property.Arb
 import io.kotest.property.checkAll
+import io.kotest.property.arbitrary.int
+import io.kotest.property.arbitrary.map
+import io.kotest.property.arbitrary.string
+import kotlin.test.Test
+import kotlinx.coroutines.test.runTest
 import kotlinx.serialization.UseSerializers
 import kotlinx.serialization.json.Json
 import kotlinx.serialization.json.encodeToJsonElement
 import kotlinx.serialization.json.decodeFromJsonElement
-import io.kotest.matchers.shouldBe
-import io.kotest.property.arbitrary.int
-import io.kotest.property.arbitrary.map
-import io.kotest.property.arbitrary.string
 import kotlinx.serialization.Serializable
 
 /*
@@ -46,24 +47,28 @@ data class NonEmptyListInside<A>(val thing: NonEmptyList<A>)
 @Serializable
 data class NonEmptySetInside<A>(val thing: NonEmptySet<A>)
 
-inline fun <reified T> StringSpec.backAgain(generator: Arb<T>) {
-  "there and back again, ${T::class.simpleName}" {
+inline fun <reified T> backAgain(generator: Arb<T>) =
+  runTest {
     checkAll(generator) { e ->
       val result = Json.encodeToJsonElement<T>(e)
       val back = Json.decodeFromJsonElement<T>(result)
       back shouldBe e
     }
   }
-}
 
 /**
  * Checks that the result of serializing a value into JSON,
  * and then deserializing it, gives back the original.
  */
-class BackAgainTest : StringSpec({
-  backAgain(Arb.either(Arb.string(), Arb.int()).map(::EitherInside))
-  backAgain(Arb.ior(Arb.string(), Arb.int()).map(::IorInside))
-  backAgain(Arb.option(Arb.string()).map(::OptionInside))
-  backAgain(Arb.nonEmptyList(Arb.int()).map(::NonEmptyListInside))
-  backAgain(Arb.nonEmptySet(Arb.int()).map(::NonEmptySetInside))
-})
+class BackAgainTest {
+  @Test fun backAgainEither() =
+    backAgain(Arb.either(Arb.string(), Arb.int()).map(::EitherInside))
+  @Test fun backAgainIor() =
+    backAgain(Arb.ior(Arb.string(), Arb.int()).map(::IorInside))
+  @Test fun backAgainOption() =
+    backAgain(Arb.option(Arb.string()).map(::OptionInside))
+  @Test fun backAgainNonEmptyList() =
+    backAgain(Arb.nonEmptyList(Arb.int()).map(::NonEmptyListInside))
+  @Test fun backAgainNonEmptySet() =
+    backAgain(Arb.nonEmptySet(Arb.int()).map(::NonEmptySetInside))
+}

arrow-libs/core/arrow-core/build.gradle.kts

@@ -32,7 +32,6 @@ kotlin {
     commonTest {
       dependencies {
         implementation(projects.arrowFxCoroutines)
-        implementation(projects.arrowFunctions)
         implementation(libs.kotlin.test)
         implementation(libs.coroutines.test)
         implementation(libs.kotest.frameworkEngine)

arrow-libs/core/arrow-core/src/commonMain/kotlin/arrow/core/Either.kt

@@ -32,13 +32,15 @@ public typealias EitherNel<E, A> = Either<NonEmptyList<E>, A>
  * all becomes even more unwieldy when we try to compose exception-throwing procedures.
  *
  * ```kotlin
- * import arrow.core.andThen
- *
  * //sampleStart
  * val throwsSomeStuff: (Int) -> Double = {x -> x.toDouble()}
  * val throwsOtherThings: (Double) -> String = {x -> x.toString()}
  * val moreThrowing: (String) -> List<String> = {x -> listOf(x)}
- * val magic = throwsSomeStuff.andThen(throwsOtherThings).andThen(moreThrowing)
+ * val magic: (Int) -> List<String> = { x ->
+ *   val y = throwsSomeStuff(x)
+ *   val z = throwsOtherThings(y)
+ *   moreThrowing(z)
+ * }
  * //sampleEnd
  * fun main() {
  *  println ("magic = $magic")