Update minJdk to11 (kotest#4749)

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Author: sksamuel

buildSrc/src/main/kotlin/kotest-jvm-conventions.gradle.kts

@@ -34,13 +34,13 @@ fun VersionCatalog.findJvmVersion(name: String): Provider<JavaLanguageVersion> =
 
 
 /** The minimum Java version that Kotest supports. */
-val jvmMinTargetVersion = versionCatalog.findJvmVersion("jvmMinTarget")
+val jvmMinTargetVersion: Provider<JavaLanguageVersion> = versionCatalog.findJvmVersion("jvmMinTarget")
 
 /** The minimum Java version that Kotest supports. */
-val jvmMaxTargetVersion = versionCatalog.findJvmVersion("jvmMaxTarget")
+val jvmMaxTargetVersion: Provider<JavaLanguageVersion> = versionCatalog.findJvmVersion("jvmMaxTarget")
 
 /** The Java version used for compilation. */
-val jvmCompilerVersion = versionCatalog.findJvmVersion("jvmCompiler")
+val jvmCompilerVersion: Provider<JavaLanguageVersion> = versionCatalog.findJvmVersion("jvmCompiler")
 
 
 //region configure Java compiler

buildSrc/src/main/kotlin/utils/JavaToolchains.kt

@@ -3,18 +3,15 @@ package utils
 import org.gradle.api.provider.Provider
 import org.gradle.jvm.toolchain.JavaLanguageVersion
 import org.jetbrains.kotlin.gradle.dsl.JvmTarget
-import org.jetbrains.kotlin.gradle.dsl.KotlinCommonCompilerOptions
 import org.jetbrains.kotlin.gradle.dsl.KotlinJvmCompilerOptions
 
 /** Convert a Gradle [JavaLanguageVersion] to a Kotlin [JvmTarget]. */
 internal fun JavaLanguageVersion.jvmTarget(): JvmTarget {
-   val version = asInt()
-   val target = if (version <= 8) "1.$version" else "$version"
-   return JvmTarget.fromTarget(target)
+   return JvmTarget.fromTarget(asInt().toString())
 }
 
 internal fun Provider<JavaLanguageVersion>.jvmTarget(): Provider<JvmTarget> =
-   map { it.jvmTarget() }
+   map { JvmTarget.fromTarget(it.asInt().toString()) }
 
 internal fun Provider<JavaLanguageVersion>.asInt(): Provider<Int> =
    map { it.asInt() }

gradle/libs.versions.toml

@@ -32,7 +32,7 @@ arrow = "2.0.1"
 
 ### Java compilation ###
 # Kotest's minimum supported Java version.
-jvmMinTarget = "8"
+jvmMinTarget = "11"
 # Kotest's maximum supported Java version. (Must be >= jvmMinTarget.)
 jvmMaxTarget = "21"
 # JDK used to compile Kotest. (Must be >= jvmMaxTarget.)

kotest-extensions/build.gradle.kts

@@ -7,15 +7,15 @@ kotlin {
 
    sourceSets {
 
-      val jvmMain by getting {
+      jvmMain {
          dependencies {
             implementation(kotlin("reflect"))
             implementation(projects.kotestFramework.kotestFrameworkEngine)
             implementation(projects.kotestCommon)
          }
       }
 
-      val jvmTest by getting {
+      jvmTest {
          dependencies {
             implementation(projects.kotestAssertions.kotestAssertionsCore)
             implementation(libs.kotlinx.coroutines.core)
@@ -24,18 +24,3 @@ kotlin {
       }
    }
 }
-
-tasks.withType<Test>().configureEach {
-   jvmArgumentProviders.add(CommandLineArgumentProvider {
-      val javaLauncher = javaLauncher.orNull
-      buildList {
-         if (javaLauncher != null && javaLauncher.metadata.languageVersion >= JavaLanguageVersion.of(9)) {
-            // --add-opens is only available in Java 9+
-            add("--add-opens=java.base/java.util=ALL-UNNAMED")
-            add("--add-opens=java.base/java.lang=ALL-UNNAMED")
-            // have to manually allow security.manager in Java 9+ https://github.com/kotest/kotest/issues/3841
-            add("-Djava.security.manager=allow")
-         }
-      }
-   })
-}

kotest-framework/kotest-framework-multiplatform-plugin-gradle/build.gradle.kts

@@ -87,13 +87,13 @@ gradlePlugin {
 tasks.withType<KotlinCompile>().configureEach {
    kotlin {
       compilerOptions {
-         jvmTarget.set(JvmTarget.JVM_1_8)
+         jvmTarget.set(JvmTarget.JVM_11)
       }
    }
 }
 
 tasks.withType<JavaCompile>().configureEach {
-   options.release.set(8)
+   options.release.set(11)
 }
 
 val updateKotestPluginConstants by tasks.registering {

kotest-framework/kotest-framework-plugin-gradle/build.gradle.kts

@@ -60,11 +60,11 @@ gradlePlugin {
 tasks.withType<KotlinCompile>().configureEach {
    kotlin {
       compilerOptions {
-         jvmTarget.set(JvmTarget.JVM_1_8)
+         jvmTarget.set(JvmTarget.JVM_11)
       }
    }
 }
 
 tasks.withType<JavaCompile>().configureEach {
-   options.release.set(8)
+   options.release.set(11)
 }

settings.gradle.kts

@@ -44,7 +44,7 @@ dependencyResolutionManagement {
 
 plugins {
    id("com.gradle.develocity") version "3.17.5"
-   id("org.gradle.toolchains.foojay-resolver-convention") version "0.8.0"
+   id("org.gradle.toolchains.foojay-resolver-convention") version "0.9.0"
 }
 
 include(