Test on Java 24 (#2473)

* Add Java 24 into test matrix

* Fix `ErrorShouldRethrowTest` by disabling some ones running on Java 24

Author: Goooler

.github/workflows/ci.yml

@@ -41,7 +41,7 @@ jobs:
       matrix:
         kind: [maven, gradle]
         # Test on the latest Java version once Gradle & Maven support it.
-        jre: [11, 17, 21, 23]
+        jre: [11, 17, 21, 24]
         os: [ubuntu-latest]
         include:
           # test windows at the diagonals of the above matrix

plugin-gradle/src/test/java/com/diffplug/gradle/spotless/ErrorShouldRethrowTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2016-2024 DiffPlug
+ * Copyright 2016-2025 DiffPlug
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,13 +15,16 @@
  */
 package com.diffplug.gradle.spotless;
 
+import static org.junit.jupiter.api.condition.JRE.JAVA_23;
+
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 
 import org.gradle.testkit.runner.BuildResult;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.condition.EnabledForJreRange;
 
 import com.diffplug.selfie.Selfie;
 import com.diffplug.selfie.StringSelfie;
@@ -57,6 +60,7 @@ void passesIfNoException() throws Exception {
 	}
 
 	@Test
+	@EnabledForJreRange(max = JAVA_23) // `[Incubating] Problems report is available at` presents in the output from Java 24 or above.
 	void anyExceptionShouldFail() throws Exception {
 		writeBuild(
 				"    } // format",
@@ -105,6 +109,7 @@ void unlessExemptedByPath() throws Exception {
 	}
 
 	@Test
+	@EnabledForJreRange(max = JAVA_23) // `[Incubating] Problems report is available at` presents in the output from Java 24 or above.
 	void failsIfNeitherStepNorFileExempted() throws Exception {
 		writeBuild(
 				"        ignoreErrorForStep 'nope'",

plugin-gradle/src/test/java/com/diffplug/gradle/spotless/GradleIntegrationHarness.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2016-2024 DiffPlug
+ * Copyright 2016-2025 DiffPlug
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -54,8 +54,11 @@ public enum GradleVersionSupport {
 		GradleVersionSupport(String version) {
 			String minVersionForRunningJRE;
 			switch (Jvm.version()) {
-			case 24:
+			case 25:
 				// TODO: https://docs.gradle.org/current/userguide/compatibility.html
+			case 24:
+				minVersionForRunningJRE = "8.14";
+				break;
 			case 23:
 				minVersionForRunningJRE = "8.10";
 				break;