run tests with jdk 17

Author: hauner

build.gradle

@@ -135,7 +135,20 @@ tasks.named("dependencyUpdates").configure {
     }
 }
 
-tasks.withType(Test) {
+tasks.withType(Test).configureEach {
+    jvmArgs(
+        "--add-exports", "jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED",
+        "--add-exports", "jdk.compiler/com.sun.tools.javac.code=ALL-UNNAMED",
+        "--add-exports", "jdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED",
+        "--add-exports", "jdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED",
+        "--add-exports", "jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED",
+        "--add-exports", "jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED"
+    )
+
+    javaLauncher.set(javaToolchains.launcherFor {
+        languageVersion.set(JavaLanguageVersion.of(libs.versions.test.jdk.get()))
+    })
+
     finalizedBy jacocoTestReport
 }
 

gradle/libs.versions.toml

@@ -2,6 +2,7 @@
 kotlin = "1.8.22"
 build-jdk = "11"
 target-jdk = "11"
+test-jdk = "17"
 
 junit = "5.9.3"
 jacoco = "0.8.7"