ci: build with latest Java, test against different JDKs

Author: jGleitz

.github/workflows/ci.yml

@@ -7,46 +7,37 @@ on:
 
 env:
   ORG_GRADLE_PROJECT_version: ${{ github.sha }}
-
 jobs:
 
   build:
     name: Build
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        java-version: [ 8, 11, 17, 21, 23 ]
+        java-version: [ 8, 11, 17, 21, 25 ]
     steps:
       - name: Checkout
         uses: actions/checkout@v5
-      - name: Cache
-        uses: actions/cache@v4
-        with:
-          path: |
-            ~/.gradle/wrapper
-            ~/.gradle/caches
-          key: gradle-${{ runner.os }}-${{ hashFiles('**/*.gradle.*') }}
-          restore-keys: |
-            gradle-${{ runner.os }}
-            gradle-
-      - name: Set up JDK ${{ matrix.java-version }}
+      - name: Set up JDK
         uses: actions/setup-java@v5
         with:
-          java-version: ${{ matrix.java-version }}
+          java-version-file: .tool-versions
           distribution: temurin
+      - name: Setup Gradle
+        uses: gradle/actions/setup-gradle@v5
       - name: Prepare
         run: ./gradlew clean dependencies
       - name: Build
         run: ./gradlew assemble testClasses
       - name: Test
-        run: ./gradlew test
+        run: ./gradlew test -PtestTargetJavaVersion=${{ matrix.java-version }}
       - name: Publish Test Report
         uses: scacap/action-surefire-report@v1
         if: failure()
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           report_paths: '**/build/test-results/test/TEST-*.xml'
-          check_name: Test Failures (${{ matrix.java-version }})
+          check_name: Test Failures (Java ${{ matrix.java-version }})
 
   release:
     name: Release Check

.github/workflows/release.yml

@@ -16,21 +16,13 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v5
-      - name: Cache
-        uses: actions/cache@v4
-        with:
-          path: |
-            ~/.gradle/wrapper
-            ~/.gradle/caches
-          key: gradle-${{ runner.os }}-${{ hashFiles('**/*.gradle.*') }}
-          restore-keys: |
-            gradle-${{ runner.os }}
-            gradle-
-      - name: Set up JDK 21
+      - name: Setup JDK
         uses: actions/setup-java@v5
         with:
-          java-version: 21
+          java-version-file: .tool-versions
           distribution: temurin
+      - name: Setup Gradle
+        uses: gradle/actions/setup-gradle@v5
       - name: Prepare
         run: ./gradlew clean dependencies
       - name: Assemble Artefacts
@@ -50,21 +42,13 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v5
-      - name: Cache
-        uses: actions/cache@v4
-        with:
-          path: |
-            ~/.gradle/wrapper
-            ~/.gradle/caches
-          key: gradle-${{ runner.os }}-${{ hashFiles('**/*.gradle.*') }}
-          restore-keys: |
-            gradle-${{ runner.os }}
-            gradle-
-      - name: Set up JDK 21
+      - name: Setup JDK
         uses: actions/setup-java@v5
         with:
-          java-version: 21
+          java-version-file: .tool-versions
           distribution: temurin
+      - name: Setup Gradle
+        uses: gradle/actions/setup-gradle@v5
       - name: Prepare
         run: ./gradlew clean dependencies
       - name: Generate Documentation

.sdkmanrc

@@ -1,3 +1,3 @@
 # Enable auto-env through the sdkman_auto_env config
 # Add key=value pairs of SDKs to use below
-java=23.0.2-tem
+java=25.0.1-tem

.tool-versions

@@ -0,0 +1 @@
+java 25.0.1

build.gradle.kts

@@ -1,6 +1,5 @@
 import io.github.gradlenexus.publishplugin.NexusRepository
-import org.gradle.api.JavaVersion.VERSION_1_8
-import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+import org.gradle.kotlin.dsl.*
 
 plugins {
 	kotlin("jvm") version "2.1.21"
@@ -20,31 +19,36 @@ repositories {
 }
 
 dependencies {
-	testImplementation(name = "atrium-cc-en_GB-robstoll", group = "ch.tutteli.atrium", version = "0.15.0")
-	testImplementation(name = "junit-jupiter-api", group = "org.junit.jupiter", version = "5.7.2")
-	testImplementation(name = "junit-jupiter-params", group = "org.junit.jupiter", version = "5.7.2")
+	testImplementation("ch.tutteli.atrium:atrium-cc-en_GB-robstoll:0.15.0")
+	testImplementation("org.junit.jupiter:junit-jupiter-api:5.7.2")
+	testImplementation("org.junit.jupiter:junit-jupiter-params:5.7.2")
 
 	constraints {
 		testImplementation(kotlin("reflect", KotlinVersion.CURRENT.toString()))
 	}
 
-	testRuntimeOnly(name = "junit-platform-launcher", group = "org.junit.platform", version = "1.12.1")
-	testRuntimeOnly(name = "junit-jupiter-engine", group = "org.junit.jupiter", version = "5.7.2")
+	testRuntimeOnly("org.junit.platform:junit-platform-launcher:1.12.1")
+	testRuntimeOnly("org.junit.jupiter:junit-jupiter-engine:5.7.2")
 }
 
-tasks.withType<Test>().configureEach {
-	useJUnitPlatform()
-	reports.junitXml.required = true
-}
+val compilationTargetJavaVersion = JavaLanguageVersion.of(8)
 
 java {
-	sourceCompatibility = VERSION_1_8
-	targetCompatibility = VERSION_1_8
+	toolchain {
+		languageVersion = compilationTargetJavaVersion
+	}
 }
 
-kotlin {
-	compilerOptions {
-		jvmTarget = JvmTarget.JVM_1_8
+val testTargetJavaVersion = providers
+	.gradleProperty("testTargetJavaVersion")
+	.map(JavaLanguageVersion::of)
+	.orElse(compilationTargetJavaVersion)
+
+tasks.withType<Test>().configureEach {
+	useJUnitPlatform()
+	reports.junitXml.required = true
+	javaLauncher = javaToolchains.launcherFor {
+		languageVersion = testTargetJavaVersion
 	}
 }
 
@@ -78,11 +82,6 @@ val dokkaJar by tasks.registering(Jar::class) {
 	from(tasks.named("dokkaGeneratePublicationJavadoc"))
 }
 
-artifacts {
-	archives(sourcesJar)
-	archives(dokkaJar)
-}
-
 lateinit var publication: MavenPublication
 lateinit var githubPackages: ArtifactRepository
 lateinit var mavenCentral: NexusRepository

settings.gradle.kts

@@ -1 +1,5 @@
+plugins {
+	id("org.gradle.toolchains.foojay-resolver-convention").version("1.0.0")
+}
+
 rootProject.name = "string-notation"