Add bootTestRun to run app using test source set output and classpath

Closes gh-35248

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/docs/asciidoc/reacting.adoc

@@ -14,12 +14,13 @@ When Gradle's {java-plugin}[`java` plugin] is applied to a project, the Spring B
 2. Configures the `assemble` task to depend on the `bootJar` task.
 3. Configures the `jar` task to use `plain` as the convention for its archive classifier.
 4. Creates a {boot-build-image-javadoc}[`BootBuildImage`] task named `bootBuildImage` that will create a OCI image using a https://buildpacks.io[buildpack].
-5. Creates a {boot-run-javadoc}[`BootRun`] task named `bootRun` that can be used to run your application.
-6. Creates a configuration named `bootArchives` that contains the artifact produced by the `bootJar` task.
-7. Creates a configuration named `developmentOnly` for dependencies that are only required at development time, such as Spring Boot's Devtools, and should not be packaged in executable jars and wars.
-8. Creates a configuration named `productionRuntimeClasspath`. It is equivalent to `runtimeClasspath` minus any dependencies that only appear in the `developmentOnly` configuration.
-9. Configures any `JavaCompile` tasks with no configured encoding to use `UTF-8`.
-10. Configures any `JavaCompile` tasks to use the `-parameters` compiler argument.
+5. Creates a {boot-run-javadoc}[`BootRun`] task named `bootRun` that can be used to run your application using the `main` source set to find its main method and provide its runtime classpath.
+6. Creates a {boot-run-javadoc}['BootRun`] task named `bootTestRun` that can be used to run your application using the `test` source set to find its main method and provide its runtime classpath.
+7. Creates a configuration named `bootArchives` that contains the artifact produced by the `bootJar` task.
+8. Creates a configuration named `developmentOnly` for dependencies that are only required at development time, such as Spring Boot's Devtools, and should not be packaged in executable jars and wars.
+9. Creates a configuration named `productionRuntimeClasspath`. It is equivalent to `runtimeClasspath` minus any dependencies that only appear in the `developmentOnly` configuration.
+10. Configures any `JavaCompile` tasks with no configured encoding to use `UTF-8`.
+11. Configures any `JavaCompile` tasks to use the `-parameters` compiler argument.
 
 
 
@@ -59,7 +60,7 @@ When Gradle's {application-plugin}[`application` plugin] is applied to a project
    The task is configured to use the `applicationDefaultJvmArgs` property as a convention for its `defaultJvmOpts` property.
 2. Creates a new distribution named `boot` and configures it to contain the artifact in the `bootArchives` configuration in its `lib` directory and the start scripts in its `bin` directory.
 3. Configures the `bootRun` task to use the `mainClassName` property as a convention for its `main` property.
-4. Configures the `bootRun` task to use the `applicationDefaultJvmArgs` property as a convention for its `jvmArgs` property.
+4. Configures the `bootRun` and `bootTestRun` tasks to use the `applicationDefaultJvmArgs` property as a convention for their `jvmArgs` property.
 5. Configures the `bootJar` task to use the `mainClassName` property as a convention for the `Start-Class` entry in its manifest.
 6. Configures the `bootWar` task to use the `mainClassName` property as a convention for the `Start-Class` entry in its manifest.
 

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/docs/asciidoc/running.adoc

@@ -141,3 +141,12 @@ include::../gradle/running/boot-run-source-resources.gradle.kts[tags=source-reso
 ----
 
 This makes them reloadable in the live application which can be helpful at development time.
+
+
+
+[[running-your-application.using-a-test-main-class]]
+== Using a Test Main Class
+In addition to `bootRun` a `bootTestRun` task is also registered.
+Like `bootRun`, `bootTestRun` is an instance of `BootRun` but it's configured to use a main class found in the output of the test source set rather than the main source set.
+It also uses the test source set's runtime classpath rather than the main source set's runtime classpath.
+As `bootTestRun` is an instance of `BootRun`, all of the configuration options described above for `bootRun` can also be used with `bootTestRun`.

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/main/java/org/springframework/boot/gradle/plugin/JavaPluginAction.java

@@ -85,6 +85,8 @@ final class JavaPluginAction implements PluginApplicationAction {
 		configureBootBuildImageTask(project, bootJar);
 		configureArtifactPublication(bootJar);
 		configureBootRunTask(project, resolveMainClassName);
+		TaskProvider<ResolveMainClassName> resolveMainTestClassName = configureResolveMainTestClassNameTask(project);
+		configureBootTestRunTask(project, resolveMainTestClassName);
 		project.afterEvaluate(this::configureUtf8Encoding);
 		configureParametersCompilerArg(project);
 		configureAdditionalMetadataLocations(project);
@@ -128,6 +130,23 @@ final class JavaPluginAction implements PluginApplicationAction {
 					});
 	}
 
+	private TaskProvider<ResolveMainClassName> configureResolveMainTestClassNameTask(Project project) {
+		return project.getTasks()
+			.register(SpringBootPlugin.RESOLVE_TEST_MAIN_CLASS_NAME_TASK_NAME, ResolveMainClassName.class,
+					(resolveMainClassName) -> {
+						resolveMainClassName.setDescription("Resolves the name of the application's test main class.");
+						resolveMainClassName.setGroup(BasePlugin.BUILD_GROUP);
+						Callable<FileCollection> classpath = () -> {
+							SourceSetContainer sourceSets = project.getExtensions().getByType(SourceSetContainer.class);
+							return project.files(sourceSets.getByName(SourceSet.TEST_SOURCE_SET_NAME).getOutput(),
+									sourceSets.getByName(SourceSet.MAIN_SOURCE_SET_NAME).getOutput());
+						};
+						resolveMainClassName.setClasspath(classpath);
+						resolveMainClassName.getOutputFile()
+							.set(project.getLayout().getBuildDirectory().file("resolvedMainTestClassName"));
+					});
+	}
+
 	private static String getJavaApplicationMainClass(ExtensionContainer extensions) {
 		JavaApplication javaApplication = extensions.findByType(JavaApplication.class);
 		if (javaApplication == null) {
@@ -194,6 +213,26 @@ final class JavaPluginAction implements PluginApplicationAction {
 		});
 	}
 
+	private void configureBootTestRunTask(Project project, TaskProvider<ResolveMainClassName> resolveMainClassName) {
+		Callable<FileCollection> classpath = () -> javaPluginExtension(project).getSourceSets()
+			.findByName(SourceSet.TEST_SOURCE_SET_NAME)
+			.getRuntimeClasspath()
+			.filter(new JarTypeFileSpec());
+		project.getTasks().register("bootTestRun", BootRun.class, (run) -> {
+			run.setDescription("Runs this project as a Spring Boot application using the test runtime classpath.");
+			run.setGroup(ApplicationPlugin.APPLICATION_GROUP);
+			run.classpath(classpath);
+			run.getConventionMapping().map("jvmArgs", () -> {
+				if (project.hasProperty("applicationDefaultJvmArgs")) {
+					return project.property("applicationDefaultJvmArgs");
+				}
+				return Collections.emptyList();
+			});
+			run.getMainClass().convention(resolveMainClassName.flatMap(ResolveMainClassName::readMainClassName));
+			configureToolchainConvention(project, run);
+		});
+	}
+
 	private void configureToolchainConvention(Project project, BootRun run) {
 		JavaToolchainSpec toolchain = project.getExtensions().getByType(JavaPluginExtension.class).getToolchain();
 		JavaToolchainService toolchainService = project.getExtensions().getByType(JavaToolchainService.class);

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/main/java/org/springframework/boot/gradle/plugin/ResolveMainClassName.java

@@ -22,6 +22,7 @@ import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.StandardOpenOption;
 import java.util.Objects;
+import java.util.stream.Collectors;
 
 import org.gradle.api.DefaultTask;
 import org.gradle.api.InvalidUserDataException;
@@ -149,16 +150,29 @@ public class ResolveMainClassName extends DefaultTask {
 	}
 
 	Provider<String> readMainClassName() {
-		return this.outputFile.map(new ClassNameReader());
+		String classpath = getClasspath().filter(File::isDirectory)
+			.getFiles()
+			.stream()
+			.map((directory) -> getProject().getProjectDir().toPath().relativize(directory.toPath()))
+			.map(Path::toString)
+			.collect(Collectors.joining(","));
+		return this.outputFile.map(new ClassNameReader(classpath));
 	}
 
 	private static final class ClassNameReader implements Transformer<String, RegularFile> {
 
+		private final String classpath;
+
+		private ClassNameReader(String classpath) {
+			this.classpath = classpath;
+		}
+
 		@Override
 		public String transform(RegularFile file) {
 			if (file.getAsFile().length() == 0) {
 				throw new InvalidUserDataException(
-						"Main class name has not been configured and it could not be resolved");
+						"Main class name has not been configured and it could not be resolved from classpath "
+								+ this.classpath);
 			}
 			Path output = file.getAsFile().toPath();
 			try {

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/main/java/org/springframework/boot/gradle/plugin/SpringBootPlugin.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2022 the original author or authors.
+ * Copyright 2012-2023 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.
@@ -82,11 +82,20 @@ public class SpringBootPlugin implements Plugin<Project> {
 	public static final String PRODUCTION_RUNTIME_CLASSPATH_CONFIGURATION_NAME = "productionRuntimeClasspath";
 
 	/**
-	 * The name of the {@link ResolveMainClassName} task.
+	 * The name of the {@link ResolveMainClassName} task used to resolve a main class from
+	 * the output of the {@code main} source set.
 	 * @since 3.0.0
 	 */
 	public static final String RESOLVE_MAIN_CLASS_NAME_TASK_NAME = "resolveMainClassName";
 
+	/**
+	 * The name of the {@link ResolveMainClassName} task used to resolve a main class from
+	 * the output of the {@code test} source set then, if needed, the output of the
+	 * {@code main} source set.
+	 * @since 3.1.0
+	 */
+	public static final String RESOLVE_TEST_MAIN_CLASS_NAME_TASK_NAME = "resolveTestMainClassName";
+
 	/**
 	 * The coordinates {@code (group:name:version)} of the
 	 * {@code spring-boot-dependencies} bom.

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/test/java/com/example/boottestrun/classpath/BootTestRunClasspathApplication.java

@@ -0,0 +1,41 @@
+/*
+ * Copyright 2012-2023 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.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.boottestrun.classpath;
+
+import java.io.File;
+import java.lang.management.ManagementFactory;
+
+/**
+ * Application used for testing {@code bootTestRun}'s classpath handling.
+ *
+ * @author Andy Wilkinson
+ */
+public class BootTestRunClasspathApplication {
+
+	protected BootTestRunClasspathApplication() {
+
+	}
+
+	public static void main(String[] args) {
+		System.out.println("Main class name = " + BootTestRunClasspathApplication.class.getName());
+		int i = 1;
+		for (String entry : ManagementFactory.getRuntimeMXBean().getClassPath().split(File.pathSeparator)) {
+			System.out.println(i++ + ". " + entry);
+		}
+	}
+
+}

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/test/java/com/example/boottestrun/jvmargs/BootTestRunJvmArgsApplication.java

@@ -0,0 +1,39 @@
+/*
+ * Copyright 2012-2023 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.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.boottestrun.jvmargs;
+
+import java.lang.management.ManagementFactory;
+
+/**
+ * Application used for testing {@code bootTestRun}'s JVM argument handling.
+ *
+ * @author Andy Wilkinson
+ */
+public class BootTestRunJvmArgsApplication {
+
+	protected BootTestRunJvmArgsApplication() {
+
+	}
+
+	public static void main(String[] args) {
+		int i = 1;
+		for (String entry : ManagementFactory.getRuntimeMXBean().getInputArguments()) {
+			System.out.println(i++ + ". " + entry);
+		}
+	}
+
+}

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/test/java/com/example/boottestrun/nomain/BootTestRunNoMain.java

@@ -0,0 +1,26 @@
+/*
+ * Copyright 2012-2023 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.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.boottestrun.nomain;
+
+/**
+ * Application used for testing {@code bootTestRun}'s handling of no test main method
+ *
+ * @author Andy Wilkinson
+ */
+public class BootTestRunNoMain {
+
+}

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/test/java/org/springframework/boot/gradle/plugin/JavaPluginActionIntegrationTests.java

@@ -60,11 +60,21 @@ class JavaPluginActionIntegrationTests {
 		assertThat(this.gradleBuild.build("tasks").getOutput()).doesNotContain("bootRun");
 	}
 
+	@TestTemplate
+	void noBootTestRunTaskWithoutJavaPluginApplied() {
+		assertThat(this.gradleBuild.build("tasks").getOutput()).doesNotContain("bootTestRun");
+	}
+
 	@TestTemplate
 	void applyingJavaPluginCreatesBootRunTask() {
 		assertThat(this.gradleBuild.build("tasks").getOutput()).contains("bootRun");
 	}
 
+	@TestTemplate
+	void applyingJavaPluginCreatesBootTestRunTask() {
+		assertThat(this.gradleBuild.build("tasks").getOutput()).contains("bootTestRun");
+	}
+
 	@TestTemplate
 	void javaCompileTasksUseUtf8Encoding() {
 		assertThat(this.gradleBuild.build("build").getOutput()).contains("compileJava = UTF-8")

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/test/java/org/springframework/boot/gradle/tasks/run/BootTestRunIntegrationTests.java

@@ -0,0 +1,156 @@
+/*
+ * Copyright 2012-2023 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.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.gradle.tasks.run;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.util.function.Consumer;
+import java.util.jar.Attributes;
+import java.util.jar.JarOutputStream;
+import java.util.jar.Manifest;
+
+import org.assertj.core.api.Assumptions;
+import org.gradle.testkit.runner.BuildResult;
+import org.gradle.testkit.runner.TaskOutcome;
+import org.gradle.util.GradleVersion;
+import org.junit.jupiter.api.TestTemplate;
+
+import org.springframework.boot.gradle.junit.GradleCompatibility;
+import org.springframework.boot.testsupport.gradle.testkit.GradleBuild;
+import org.springframework.util.FileSystemUtils;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Integration tests for the {@link BootRun} task configured to use the test source set.
+ *
+ * @author Andy Wilkinson
+ */
+@GradleCompatibility(configurationCache = true)
+class BootTestRunIntegrationTests {
+
+	GradleBuild gradleBuild;
+
+	@TestTemplate
+	void basicExecution() throws IOException {
+		copyClasspathApplication();
+		BuildResult result = this.gradleBuild.build("bootTestRun");
+		assertThat(result.task(":bootTestRun").getOutcome()).isEqualTo(TaskOutcome.SUCCESS);
+		assertThat(result.getOutput()).contains("1. " + canonicalPathOf("build/classes/java/test"))
+			.contains("2. " + canonicalPathOf("build/resources/test"))
+			.contains("3. " + canonicalPathOf("build/classes/java/main"))
+			.contains("4. " + canonicalPathOf("build/resources/main"));
+	}
+
+	@TestTemplate
+	void defaultJvmArgs() throws IOException {
+		copyJvmArgsApplication();
+		BuildResult result = this.gradleBuild.build("bootTestRun");
+		assertThat(result.task(":bootTestRun").getOutcome()).isEqualTo(TaskOutcome.SUCCESS);
+		assertThat(result.getOutput()).contains("-XX:TieredStopAtLevel=1");
+	}
+
+	@TestTemplate
+	void optimizedLaunchDisabledJvmArgs() throws IOException {
+		copyJvmArgsApplication();
+		BuildResult result = this.gradleBuild.build("bootTestRun");
+		assertThat(result.task(":bootTestRun").getOutcome()).isEqualTo(TaskOutcome.SUCCESS);
+		assertThat(result.getOutput()).doesNotContain("-Xverify:none").doesNotContain("-XX:TieredStopAtLevel=1");
+	}
+
+	@TestTemplate
+	void applicationPluginJvmArgumentsAreUsed() throws IOException {
+		if (this.gradleBuild.isConfigurationCache()) {
+			// https://github.com/gradle/gradle/pull/23924
+			GradleVersion gradleVersion = GradleVersion.version(this.gradleBuild.getGradleVersion());
+			Assumptions.assumeThat(gradleVersion)
+				.isLessThan(GradleVersion.version("8.0"))
+				.isGreaterThanOrEqualTo(GradleVersion.version("8.1-rc-1"));
+		}
+		copyJvmArgsApplication();
+		BuildResult result = this.gradleBuild.build("bootTestRun");
+		assertThat(result.task(":bootTestRun").getOutcome()).isEqualTo(TaskOutcome.SUCCESS);
+		assertThat(result.getOutput()).contains("-Dcom.bar=baz")
+			.contains("-Dcom.foo=bar")
+			.contains("-XX:TieredStopAtLevel=1");
+	}
+
+	@TestTemplate
+	void jarTypeFilteringIsAppliedToTheClasspath() throws IOException {
+		copyClasspathApplication();
+		File flatDirRepository = new File(this.gradleBuild.getProjectDir(), "repository");
+		createDependenciesStarterJar(new File(flatDirRepository, "starter.jar"));
+		createStandardJar(new File(flatDirRepository, "standard.jar"));
+		BuildResult result = this.gradleBuild.build("bootTestRun");
+		assertThat(result.task(":bootTestRun").getOutcome()).isEqualTo(TaskOutcome.SUCCESS);
+		assertThat(result.getOutput()).contains("standard.jar").doesNotContain("starter.jar");
+	}
+
+	@TestTemplate
+	void failsGracefullyWhenNoTestMainMethodIsFound() throws IOException {
+		copyApplication("nomain");
+		BuildResult result = this.gradleBuild.buildAndFail("bootTestRun");
+		assertThat(result.task(":bootTestRun").getOutcome()).isEqualTo(TaskOutcome.FAILED);
+		if (this.gradleBuild.isConfigurationCache() && this.gradleBuild.gradleVersionIsAtLeast("8.0")) {
+			assertThat(result.getOutput())
+				.contains("Main class name has not been configured and it could not be resolved from classpath");
+		}
+		else {
+			assertThat(result.getOutput())
+				.contains("Main class name has not been configured and it could not be resolved from classpath "
+						+ "build/classes/java/test");
+		}
+	}
+
+	private void copyClasspathApplication() throws IOException {
+		copyApplication("classpath");
+	}
+
+	private void copyJvmArgsApplication() throws IOException {
+		copyApplication("jvmargs");
+	}
+
+	private void copyApplication(String name) throws IOException {
+		File output = new File(this.gradleBuild.getProjectDir(), "src/test/java/com/example/boottestrun/" + name);
+		output.mkdirs();
+		FileSystemUtils.copyRecursively(new File("src/test/java/com/example/boottestrun/" + name), output);
+	}
+
+	private String canonicalPathOf(String path) throws IOException {
+		return new File(this.gradleBuild.getProjectDir(), path).getCanonicalPath();
+	}
+
+	private void createStandardJar(File location) throws IOException {
+		createJar(location, (attributes) -> {
+		});
+	}
+
+	private void createDependenciesStarterJar(File location) throws IOException {
+		createJar(location, (attributes) -> attributes.putValue("Spring-Boot-Jar-Type", "dependencies-starter"));
+	}
+
+	private void createJar(File location, Consumer<Attributes> attributesConfigurer) throws IOException {
+		location.getParentFile().mkdirs();
+		Manifest manifest = new Manifest();
+		Attributes attributes = manifest.getMainAttributes();
+		attributes.put(Attributes.Name.MANIFEST_VERSION, "1.0");
+		attributesConfigurer.accept(attributes);
+		new JarOutputStream(new FileOutputStream(location), manifest).close();
+	}
+
+}

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/test/resources/org/springframework/boot/gradle/plugin/JavaPluginActionIntegrationTests-applyingJavaPluginCreatesBootTestRunTask.gradle

@@ -0,0 +1,4 @@
+plugins {
+	id 'org.springframework.boot' version '{version}'
+	id 'java'
+}

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/test/resources/org/springframework/boot/gradle/plugin/JavaPluginActionIntegrationTests-noBootTestRunTaskWithoutJavaPluginApplied.gradle

@@ -0,0 +1,3 @@
+plugins {
+	id 'org.springframework.boot' version '{version}'
+}

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/test/resources/org/springframework/boot/gradle/tasks/run/BootTestRunIntegrationTests-applicationPluginJvmArgumentsAreUsed.gradle

@@ -0,0 +1,8 @@
+plugins {
+	id 'application'
+	id 'org.springframework.boot' version '{version}'
+}
+
+application {
+	applicationDefaultJvmArgs = ['-Dcom.foo=bar', '-Dcom.bar=baz']
+}

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/test/resources/org/springframework/boot/gradle/tasks/run/BootTestRunIntegrationTests-basicExecution.gradle

@@ -0,0 +1,4 @@
+plugins {
+	id 'java'
+	id 'org.springframework.boot' version '{version}'
+}

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/test/resources/org/springframework/boot/gradle/tasks/run/BootTestRunIntegrationTests-defaultJvmArgs.gradle

@@ -0,0 +1,4 @@
+plugins {
+	id 'application'
+	id 'org.springframework.boot' version '{version}'
+}

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/test/resources/org/springframework/boot/gradle/tasks/run/BootTestRunIntegrationTests-failsGracefullyWhenNoTestMainMethodIsFound.gradle

@@ -0,0 +1,4 @@
+plugins {
+	id 'java'
+	id 'org.springframework.boot' version '{version}'
+}

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/test/resources/org/springframework/boot/gradle/tasks/run/BootTestRunIntegrationTests-jarTypeFilteringIsAppliedToTheClasspath.gradle

@@ -0,0 +1,15 @@
+plugins {
+	id 'java'
+	id 'org.springframework.boot' version '{version}'
+}
+
+repositories {
+	flatDir {
+		dirs 'repository'
+	}
+}
+
+dependencies {
+	implementation(name: "standard")
+	implementation(name: "starter")
+}

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/test/resources/org/springframework/boot/gradle/tasks/run/BootTestRunIntegrationTests-optimizedLaunchDisabledJvmArgs.gradle

@@ -0,0 +1,8 @@
+plugins {
+	id 'application'
+	id 'org.springframework.boot' version '{version}'
+}
+
+bootTestRun {
+	optimizedLaunch = false
+}

spring-boot-project/spring-boot-tools/spring-boot-gradle-test-support/src/main/java/org/springframework/boot/testsupport/gradle/testkit/GradleBuild.java

@@ -189,6 +189,10 @@ public class GradleBuild {
 		return this;
 	}
 
+	public boolean gradleVersionIsAtLeast(String version) {
+		return GradleVersion.version(this.gradleVersion).compareTo(GradleVersion.version(version)) >= 0;
+	}
+
 	public BuildResult build(String... arguments) {
 		try {
 			BuildResult result = prepareRunner(arguments).build();