Fix compatibility tests

Author: Goooler

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.
@@ -44,8 +44,6 @@
 public class GradleIntegrationHarness extends ResourceHarness {
 	public enum GradleVersionSupport {
 		JRE_11("5.0"), MINIMUM(SpotlessPlugin.VER_GRADLE_min), CUSTOM_STEPS(SpotlessPlugin.VER_GRADLE_minVersionForCustom),
-		// technically, this API exists in 6.5, but the flags for it change in 6.6, so we build to that
-		CONFIGURATION_CACHE("6.6"),
 		// https://docs.gradle.org/7.5/userguide/configuration_cache.html#config_cache:stable
 		STABLE_CONFIGURATION_CACHE("7.5");
 

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

@@ -53,7 +53,7 @@ class NativeCmdWithConfigCacheTest extends GradleIntegrationHarness implements N
 		public GradleRunner gradleRunner() throws IOException {
 			setFile("gradle.properties").toLines("org.gradle.unsafe.configuration-cache=true",
 					"org.gradle.configuration-cache=true");
-			return super.gradleRunner().withGradleVersion(GradleVersionSupport.CONFIGURATION_CACHE.version);
+			return super.gradleRunner();
 		}
 	}
 }

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

@@ -54,7 +54,7 @@ void redirectPluginOldGradle() throws IOException {
 						"   > We have moved from 'com.diffplug.gradle.spotless'",
 						"                     to 'com.diffplug.spotless'",
 						"     To migrate:",
-						"     - Upgrade Gradle to 6.1.1 or newer (you're on 5.0)",
+						"     - Upgrade Gradle to 7.1 or newer (you're on 5.0)",
 						"     - Test your build with: id 'com.diffplug.gradle.spotless' version '4.5.1'"));
 	}
 
@@ -68,6 +68,6 @@ void realPluginOldGradle() throws IOException {
 		Assertions.assertThat(gradleRunner().withGradleVersion(GradleVersionSupport.JRE_11.version)
 				.buildAndFail().getOutput().replace("\r", ""))
 				.contains(StringPrinter.buildStringFromLines(
-						"Spotless requires Gradle 6.1.1 or newer, this was 5.0"));
+						"Spotless requires Gradle 7.1 or newer, this was 5.0"));
 	}
 }