Add a test-run goal to the Maven plugin

Closes gh-35202

spring-boot-project/spring-boot-tools/spring-boot-maven-plugin/src/intTest/java/org/springframework/boot/maven/TestRunIntegrationTests.java

@@ -0,0 +1,56 @@
+/*
+ * 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.maven;
+
+import java.io.File;
+import java.io.IOException;
+
+import org.junit.jupiter.api.TestTemplate;
+import org.junit.jupiter.api.extension.ExtendWith;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.contentOf;
+
+/**
+ * Integration tests for the Maven plugin's {@code test-run} goal.
+ *
+ * @author Andy Wilkinson
+ */
+@ExtendWith(MavenBuildExtension.class)
+class TestRunIntegrationTests {
+
+	@TestTemplate
+	void whenTheTestRunGoalIsExecutedTheApplicationIsRunWithTestAndMainClassesAndTestClasspath(MavenBuild mavenBuild) {
+		mavenBuild.project("test-run")
+			.goals("spring-boot:test-run", "-X")
+			.execute((project) -> assertThat(buildLog(project))
+				.contains("Main class name = org.test.TestSampleApplication")
+				.contains("1. " + canonicalPathOf(project, "target/test-classes"))
+				.contains("2. " + canonicalPathOf(project, "target/classes"))
+				.containsPattern("3\\. .*spring-core")
+				.containsPattern("4\\. .*spring-jcl"));
+	}
+
+	private String canonicalPathOf(File project, String path) throws IOException {
+		return new File(project, path).getCanonicalPath();
+	}
+
+	private String buildLog(File project) {
+		return contentOf(new File(project, "target/build.log"));
+	}
+
+}

spring-boot-project/spring-boot-tools/spring-boot-maven-plugin/src/intTest/projects/test-run/pom.xml

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<groupId>org.springframework.boot.maven.it</groupId>
+	<artifactId>test-run</artifactId>
+	<version>0.0.1.BUILD-SNAPSHOT</version>
+	<properties>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+		<maven.compiler.source>@java.version@</maven.compiler.source>
+		<maven.compiler.target>@java.version@</maven.compiler.target>
+	</properties>
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>@project.groupId@</groupId>
+				<artifactId>@project.artifactId@</artifactId>
+				<version>@project.version@</version>
+			</plugin>
+		</plugins>
+	</build>
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-core</artifactId>
+			<version>@spring-framework.version@</version>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+</project>

spring-boot-project/spring-boot-tools/spring-boot-maven-plugin/src/intTest/projects/test-run/src/main/java/org/test/SampleApplication.java

@@ -0,0 +1,25 @@
+/*
+ * Copyright 2012-2020 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.test;
+
+public class SampleApplication {
+
+	public static void main(String[] args) {
+		System.out.println("I haz been run");
+	}
+
+}

spring-boot-project/spring-boot-tools/spring-boot-maven-plugin/src/intTest/projects/test-run/src/test/java/org/test/TestSampleApplication.java

@@ -0,0 +1,32 @@
+/*
+ * 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.test;
+
+import java.io.File;
+import java.lang.management.ManagementFactory;
+
+public class TestSampleApplication {
+
+	public static void main(String[] args) {
+		System.out.println("Main class name = " + TestSampleApplication.class.getName());
+		int i = 1;
+		for (String entry : ManagementFactory.getRuntimeMXBean().getClassPath().split(File.pathSeparator)) {
+			System.out.println(i++ + ". " + entry);
+		}
+	}
+
+}