Update Kotlin dependencies: Kotest, JUnit5 & Arrow

.editorconfig

@@ -0,0 +1,2 @@
+[*.{kt,kts}]
+max_line_length=120

.gitignore

@@ -1,5 +1,4 @@
 out
 gradle
 .gradle
-.kotlintest
 build

build.gradle.kts

@@ -1,27 +1,24 @@
-val arrowVersion by extra { "0.10.0" }
+val arrowVersion = "1.0.1"
+val kotestVersion = "5.3.0"
 
 plugins {
-    kotlin("jvm") version "1.3.30"
+    kotlin("jvm") version "1.6.21"
 }
 
 repositories {
-    jcenter()
     mavenCentral()
     maven(url = "https://dl.bintray.com/arrow-kt/arrow-kt/")
 }
 
 dependencies {
     implementation(kotlin("stdlib"))
 
-    compile("io.arrow-kt:arrow-core:$arrowVersion")
-    compile("io.arrow-kt:arrow-syntax:$arrowVersion")
-    compile("io.arrow-kt:arrow-optics:$arrowVersion")
+    implementation(platform("io.arrow-kt:arrow-stack:$arrowVersion"))
+    implementation("io.arrow-kt:arrow-core")
+    implementation("io.kotest:kotest-runner-junit5-jvm:$kotestVersion")
 
-    testCompile("io.kotlintest:kotlintest-runner-junit5:3.3.2")
-    testCompile("junit:junit:4.12")
+    testImplementation(kotlin("test"))
 }
-tasks {
-    test {
-        useJUnitPlatform()
-    }
+tasks.withType<Test>().configureEach {
+    useJUnitPlatform()
 }

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.2.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.4.2-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

src/main/kotlin/ft/typesafety/OptionalExercises.kt

@@ -1,6 +1,9 @@
 package ft.typesafety
 
+import arrow.core.None
 import arrow.core.Option
+import arrow.core.Option.Companion.fromNullable
+import arrow.core.Some
 
 /**
  * Use pattern matching and recursion.  No vars, no loops, no overriding.

src/test/kotlin/ft/higherorder/FoldingExercisesTest.kt

@@ -14,8 +14,8 @@ import ft.higherorder.FoldingExercises.sum
 import ft.recursion.Nil
 import ft.recursion.FunList
 import ft.recursion.Cons
-import io.kotlintest.specs.StringSpec
-import io.kotlintest.shouldBe
+import io.kotest.core.spec.style.StringSpec
+import io.kotest.matchers.shouldBe
 
 class FoldingExercisesTest : StringSpec({
 

src/test/kotlin/ft/recursion/RecursionExercisesTest.kt

@@ -11,8 +11,8 @@ import ft.recursion.RecursionExercises.flatten
 import ft.recursion.RecursionExercises.flatMap
 import ft.recursion.RecursionExercises.maximum
 import ft.recursion.RecursionExercises.reverse
-import io.kotlintest.specs.StringSpec
-import io.kotlintest.shouldBe
+import io.kotest.core.spec.style.StringSpec
+import io.kotest.matchers.shouldBe
 
 class RecursionExercisesTest : StringSpec({
   "10 + 34 = 44" {

src/test/kotlin/ft/typesafety/OptionalExercises1Test.kt

@@ -5,8 +5,8 @@ import arrow.core.Some
 import ft.typesafety.OptionalExercises1.getFromConfig
 import ft.typesafety.OptionalExercises1.lengthOfHost
 import ft.typesafety.OptionalExercises1.portPlus1000
-import io.kotlintest.shouldBe
-import io.kotlintest.specs.StringSpec
+import io.kotest.core.spec.style.StringSpec
+import io.kotest.matchers.shouldBe
 
 class OptionalExercises1Test : StringSpec({
 

src/test/kotlin/ft/typesafety/OptionalExercises2Test.kt

@@ -2,8 +2,8 @@ package ft.typesafety
 
 import ft.typesafety.OptionalExercises2.connectToSquareupHostsOnly
 import ft.typesafety.OptionalExercises2.getEnvForHost
-import io.kotlintest.shouldBe
-import io.kotlintest.specs.StringSpec
+import io.kotest.core.spec.style.StringSpec
+import io.kotest.matchers.shouldBe
 
 class OptionalExercises2Test : StringSpec({
 

src/test/kotlin/ft/typesafety/OptionalExercises3Test.kt

@@ -1,5 +1,6 @@
 package ft.typesafety
 
+import arrow.core.curried
 import ft.typesafety.OptionalExercises3.Just
 import ft.typesafety.OptionalExercises3.Maybe
 import ft.typesafety.OptionalExercises3.Nothing
@@ -12,9 +13,8 @@ import ft.typesafety.OptionalExercises3.sequence
 import ft.typesafety.OptionalExercises3.orElse
 import ft.typesafety.OptionalExercises3.fold
 import ft.typesafety.OptionalExercises3.map
-import io.kotlintest.shouldBe
-import io.kotlintest.specs.StringSpec
-import arrow.syntax.function.curried
+import io.kotest.core.spec.style.StringSpec
+import io.kotest.matchers.shouldBe
 
 class OptionalExercises3Test : StringSpec({