Bump CI from java 15 to 17

.circleci/config.yml

@@ -77,11 +77,11 @@ jobs:
     docker:
       - image: cimg/openjdk:11.0
     <<: *test_nomaven
-  test_nomaven_15:
-    # latest JDK, replace with 16 when it comes out
+  test_nomaven_17:
+    # latest JDK
     <<: *env_gradle_large
     docker:
-      - image: cimg/openjdk:15.0
+      - image: cimg/openjdk:17.0
     <<: *test_nomaven
   test_justmaven_11:
     << : *env_gradle
@@ -275,7 +275,7 @@ workflows:
       - test_nomaven_11:
           requires:
             - assemble_testClasses
-      - test_nomaven_15:
+      - test_nomaven_17:
           requires:
             - assemble_testClasses
       - test_npm_8:

CHANGES.md

@@ -10,6 +10,8 @@ This document is intended for Spotless developers.
 We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (starting after version `1.27.0`).
 
 ## [Unreleased]
+### Changed
+* Bump CI from Java 15 to 17 ([#1094](https://github.com/diffplug/spotless/pull/1094)).
 
 ## [2.22.0] - 2022-01-13
 ### Added

gradle.properties

@@ -1,6 +1,5 @@
 # To fix metaspace errors
-org.gradle.jvmargs=-Xmx2g -XX:MaxMetaspaceSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8
-
+org.gradle.jvmargs=-Xmx2g -XX:MaxMetaspaceSize=512m -Dfile.encoding=UTF-8
 name=spotless
 description=Spotless - keep your code spotless with Gradle
 org=diffplug

gradle/java-publish.gradle

@@ -66,7 +66,6 @@ javadoc {
 	options.addStringOption('source', '8')
 	// setup the header
 	options.header javadocInfo
-	options.footer javadocInfo
 	// setup links
 	options.linksOffline('https://docs.oracle.com/javase/8/docs/api/', "${dotdotGradle}/javadoc/java8")
 	options.linksOffline('https://docs.gradle.org/2.14/javadoc/', "${dotdotGradle}/javadoc/gradle")

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2016-2021 DiffPlug
+ * Copyright 2016-2022 DiffPlug
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -48,14 +48,26 @@ public enum GradleVersionSupport {
 		final String version;
 
 		GradleVersionSupport(String version) {
-			if (Jvm.version() >= 15) {
-				// the first version with support for Java 15+
+			switch (Jvm.version()) {
+			case 20:
+			case 19:
+			case 18:
+				// TODO: https://docs.gradle.org/current/userguide/compatibility.html
+			case 17:
+				this.version = "7.3";
+				break;
+			case 16:
+				this.version = "7.0";
+				break;
+			case 15:
 				this.version = "6.7";
-			} else if (Jvm.version() >= 14) {
-				// the first version with support for Java 14+
+				break;
+			case 14:
 				this.version = "6.3";
-			} else {
+				break;
+			default:
 				this.version = version;
+				break;
 			}
 		}
 	}

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2020-2021 DiffPlug
+ * Copyright 2020-2022 DiffPlug
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -53,7 +53,7 @@ void withinBlocksTourDeForce() throws IOException {
 				"      custom 'lowercase', { str -> str.toLowerCase() }",
 				"    }",
 				"    withinBlocks 'java only', '\\n```java\\n', '\\n```\\n', JavaExtension, {",
-				"      googleJavaFormat()",
+				"      googleJavaFormat('1.2')",
 				"    }",
 				"  }",
 				"}");

plugin-maven/src/test/java/com/diffplug/spotless/maven/MavenIntegrationHarness.java

@@ -41,6 +41,7 @@
 
 import com.diffplug.common.base.Unhandled;
 import com.diffplug.common.io.Resources;
+import com.diffplug.spotless.Jvm;
 import com.diffplug.spotless.ResourceHarness;
 
 public class MavenIntegrationHarness extends ResourceHarness {
@@ -81,6 +82,17 @@ public class MavenIntegrationHarness extends ResourceHarness {
 	@BeforeEach
 	void gitAttributes() throws IOException {
 		setFile(".gitattributes").toContent("* text eol=lf");
+		if (Jvm.version() >= 16) {
+			// for GJF https://github.com/diffplug/spotless/issues/834
+			setFile(".mvn/jvm.config").toContent(
+					"--add-exports jdk.compiler/com.sun.tools.javac.api=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" +
+							// this last line is for Detekt
+							" --add-opens java.base/java.lang=ALL-UNNAMED");
+		}
 		// copy the mvnw resources
 		copy("mvnw").setExecutable(true);
 		copy("mvnw.cmd");

testlib/build.gradle

@@ -21,7 +21,20 @@ dependencies {
 // we'll hold the testlib to a low standard (prize brevity)
 spotbugs { reportLevel = 'high' } // low|medium|high (low = sensitive to even minor mistakes)
 
-test { useJUnitPlatform() }
+test {
+	useJUnitPlatform()
+	if (JavaVersion.current().isCompatibleWith(JavaVersion.VERSION_16)) {
+		// for GJF https://github.com/diffplug/spotless/issues/834
+		def args = [
+			'--add-exports=jdk.compiler/com.sun.tools.javac.api=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'
+		]
+		jvmArgs args
+	}
+}
 
 apply from: rootProject.file('gradle/special-tests.gradle')
 

testlib/src/test/java/com/diffplug/spotless/java/GoogleJavaFormatStepTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2016-2021 DiffPlug
+ * Copyright 2016-2022 DiffPlug
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,6 +17,7 @@
 
 import static org.junit.jupiter.api.condition.JRE.JAVA_11;
 import static org.junit.jupiter.api.condition.JRE.JAVA_13;
+import static org.junit.jupiter.api.condition.JRE.JAVA_15;
 
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
@@ -41,7 +42,7 @@ void jvm13Features() throws Exception {
 	}
 
 	@Test
-	@EnabledForJreRange(min = JAVA_11) // google-java-format requires JRE 11+
+	@EnabledForJreRange(min = JAVA_11, max = JAVA_15) // google-java-format requires JRE 11+
 	void behavior18() throws Exception {
 		FormatterStep step = GoogleJavaFormatStep.create("1.8", TestProvisioner.mavenCentral());
 		StepHarness.forStep(step)