Upgrade to Groovy 3.0.7

spring-boot-project/spring-boot-cli/samples/http.groovy

@@ -1,7 +1,6 @@
 package org.test
 
-@Grab("org.codehaus.groovy.modules.http-builder:http-builder:0.5.2") // This one just to test dependency resolution
-import groovyx.net.http.*
+import org.springframework.web.client.RestTemplate;
 
 @Controller
 class Example implements CommandLineRunner {
@@ -17,7 +16,7 @@ class Example implements CommandLineRunner {
 
 	void run(String... args) {
 		def port = context.webServer.port
-		def world = new RESTClient("http://localhost:" + port).get(path:"/").data.text
+		def world = new RestTemplate().getForObject("http://localhost:" + port + "/", String.class);
 		print "Hello " + world
 	}
 

spring-boot-project/spring-boot-cli/src/main/java/org/springframework/boot/cli/compiler/GroovyCompiler.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -21,6 +21,7 @@
 import java.net.URL;
 import java.util.ArrayList;
 import java.util.Collections;
+import java.util.Deque;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.ServiceLoader;
@@ -216,16 +217,16 @@ public Class<?>[] compile(String... sources) throws CompilationFailedException,
 
 	@SuppressWarnings("rawtypes")
 	private void addAstTransformations(CompilationUnit compilationUnit) {
-		LinkedList[] phaseOperations = getPhaseOperations(compilationUnit);
-		processConversionOperations(phaseOperations[Phases.CONVERSION]);
+		Deque[] phaseOperations = getPhaseOperations(compilationUnit);
+		processConversionOperations((LinkedList) phaseOperations[Phases.CONVERSION]);
 	}
 
 	@SuppressWarnings("rawtypes")
-	private LinkedList[] getPhaseOperations(CompilationUnit compilationUnit) {
+	private Deque[] getPhaseOperations(CompilationUnit compilationUnit) {
 		try {
 			Field field = CompilationUnit.class.getDeclaredField("phaseOperations");
 			field.setAccessible(true);
-			return (LinkedList[]) field.get(compilationUnit);
+			return (Deque[]) field.get(compilationUnit);
 		}
 		catch (Exception ex) {
 			throw new IllegalStateException("Phase operations not available from compilation unit");
@@ -270,11 +271,12 @@ public void call(SourceUnit source, GeneratorContext context, ClassNode classNod
 				throws CompilationFailedException {
 
 			ImportCustomizer importCustomizer = new SmartImportCustomizer(source);
-			ClassNode mainClassNode = MainClass.get(source.getAST().getClasses());
+			List<ClassNode> classNodes = source.getAST().getClasses();
+			ClassNode mainClassNode = MainClass.get(classNodes);
 
 			// Additional auto configuration
 			for (CompilerAutoConfiguration autoConfiguration : GroovyCompiler.this.compilerAutoConfigurations) {
-				if (autoConfiguration.matches(classNode)) {
+				if (classNodes.stream().anyMatch(autoConfiguration::matches)) {
 					if (GroovyCompiler.this.configuration.isGuessImports()) {
 						autoConfiguration.applyImports(importCustomizer);
 						importCustomizer.call(source, context, classNode);

spring-boot-project/spring-boot-cli/src/test/java/org/springframework/boot/cli/compiler/ResolveDependencyCoordinatesTransformationTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -87,7 +87,8 @@ void setUpExpectations() {
 
 	@Test
 	void transformationOfAnnotationOnImport() {
-		this.moduleNode.addImport(null, null, Arrays.asList(this.grabAnnotation));
+		ClassNode classNode = new ClassNode("Test", 0, new ClassNode(Object.class));
+		this.moduleNode.addImport("alias", classNode, Arrays.asList(this.grabAnnotation));
 		assertGrabAnnotationHasBeenTransformed();
 	}
 
@@ -100,14 +101,16 @@ void transformationOfAnnotationOnStarImport() {
 
 	@Test
 	void transformationOfAnnotationOnStaticImport() {
-		this.moduleNode.addStaticImport(null, null, null, Arrays.asList(this.grabAnnotation));
+		ClassNode classNode = new ClassNode("Test", 0, new ClassNode(Object.class));
+		this.moduleNode.addStaticImport(classNode, "field", "alias", Arrays.asList(this.grabAnnotation));
 
 		assertGrabAnnotationHasBeenTransformed();
 	}
 
 	@Test
 	void transformationOfAnnotationOnStaticStarImport() {
-		this.moduleNode.addStaticStarImport(null, null, Arrays.asList(this.grabAnnotation));
+		ClassNode classNode = new ClassNode("Test", 0, new ClassNode(Object.class));
+		this.moduleNode.addStaticStarImport("test", classNode, Arrays.asList(this.grabAnnotation));
 
 		assertGrabAnnotationHasBeenTransformed();
 	}

spring-boot-project/spring-boot-dependencies/build.gradle

@@ -345,7 +345,7 @@ bom {
 			]
 		}
 	}
-	library("Groovy", "2.5.14") {
+	library("Groovy", "3.0.7") {
 		group("org.codehaus.groovy") {
 			imports = [
 				"groovy-bom"
@@ -1322,9 +1322,6 @@ bom {
 		}
 	}
 	library("REST Assured", "4.2.1") {
-		prohibit("[4.3.0,)") {
-			because "it requires Groovy 3"
-		}
 		group("io.rest-assured") {
 			modules = [
 				"json-path",

spring-boot-project/spring-boot-docs/src/docs/asciidoc/spring-boot-features.adoc

@@ -8044,8 +8044,10 @@ Alternatively, you can specify a source for your test, which disables the behavi
 ==== Using Spock to Test Spring Boot Applications
 If you wish to use Spock to test a Spring Boot application, you should add a dependency on Spock's `spock-spring` module to your application's build.
 `spock-spring` integrates Spring's test framework into Spock.
-It is recommended that you use Spock 1.2 or later to benefit from a number of improvements to Spock's Spring Framework and Spring Boot integration.
-See http://spockframework.org/spock/docs/1.2/modules.html#_spring_module[the documentation for Spock's Spring module] for further details.
+See http://spockframework.org/spock/docs/2.0-M4/modules.html#_spring_module[the documentation for Spock's Spring module] for further details.
+
+NOTE: As of Spring Boot 2.5.x and its support for Groovy 3.x you have two options to make use of Spock:
+Either use the latest Spock 2.0 milestone or release that is compatible with Groovy 3.x or stick with Spock 1.3 and downgrade Spring Boot's Groovy version to 2.5.x.
 
 
 

spring-boot-project/spring-boot-parent/build.gradle

@@ -133,7 +133,7 @@ bom {
 			]
 		}
 	}
-	library("Spock Framework", "1.3-groovy-2.5") {
+	library("Spock Framework", "2.0-M4-groovy-3.0") {
 		group("org.spockframework") {
 			modules = [
 				"spock-core",