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Unit test for no resources in the target folder
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‎org.eclipse.m2e.core.tests/resources/projects/demo/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<parent>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-parent</artifactId>
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<version>3.0.8</version>
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<relativePath/> <!-- lookup parent from repository -->
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</parent>
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<groupId>com.example</groupId>
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<artifactId>demo</artifactId>
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<version>0.0.1-SNAPSHOT</version>
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<name>demo</name>
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<description>Demo project for Spring Boot</description>
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<properties>
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<java.version>17</java.version>
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</properties>
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<dependencies>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-test</artifactId>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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</plugin>
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</plugins>
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</build>
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</project>

‎org.eclipse.m2e.core.tests/resources/projects/demo/src/main/java/com/example/demo/DemoApplication.java‎

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package com.example.demo;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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@SpringBootApplication
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public class DemoApplication {
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public static void main(String[] args) {
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SpringApplication.run(DemoApplication.class, args);
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}
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}

‎org.eclipse.m2e.core.tests/resources/projects/demo/src/main/resources/application.properties‎

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‎org.eclipse.m2e.core.tests/resources/projects/demo/src/test/java/com/example/demo/DemoApplicationTests.java‎

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package com.example.demo;
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import org.junit.jupiter.api.Test;
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import org.springframework.boot.test.context.SpringBootTest;
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@SpringBootTest
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class DemoApplicationTests {
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@Test
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void contextLoads() {
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}
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}

‎org.eclipse.m2e.core.tests/src/org/eclipse/m2e/core/AppPropsNotCopiedIntoTargetTest.java‎

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/*******************************************************************************
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* Copyright (c) 2023 Alex Boyko and others.
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License 2.0
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* which accompanies this distribution, and is available at
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* https://www.eclipse.org/legal/epl-2.0/
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*
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* SPDX-License-Identifier: EPL-2.0
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*******************************************************************************/
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package org.eclipse.m2e.core;
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import static org.junit.Assert.assertFalse;
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import static org.junit.Assert.assertTrue;
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import java.io.ByteArrayInputStream;
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import java.io.File;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import org.apache.commons.io.FileUtils;
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import org.eclipse.core.resources.IFile;
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import org.eclipse.core.resources.IProject;
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import org.eclipse.core.runtime.IPath;
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import org.eclipse.jdt.core.IJavaProject;
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import org.eclipse.jdt.core.JavaCore;
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import org.eclipse.m2e.tests.common.AbstractMavenProjectTestCase;
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import org.junit.After;
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import org.junit.Before;
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import org.junit.Test;
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public class AppPropsNotCopiedIntoTargetTest extends AbstractMavenProjectTestCase {
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private File projectDirectory;
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@Override
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@Before
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public void setUp() throws Exception {
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super.setUp();
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setAutoBuilding(true);
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projectDirectory = new File(Files.createTempDirectory("m2e-tests").toFile(), "demo");
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projectDirectory.mkdirs();
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copyDir(new File("resources/projects/demo"), projectDirectory);
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}
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@Override
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@After
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public void tearDown() throws Exception {
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FileUtils.deleteDirectory(this.projectDirectory.getParentFile());
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super.tearDown();
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}
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@Test
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public void test() throws Exception {
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IProject project = importProject(new File(projectDirectory, "pom.xml").toString());
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waitForJobsToComplete(monitor);
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IJavaProject jp = JavaCore.create(project);
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assertTrue("Build Automatically is NOT on!", isAutoBuilding());
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IPath rootPath = project.getWorkspace().getRoot().getLocation();
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// Project imported for the first time and built - everything is properly in the target folder
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assertTrue("'application.properties' is NOT in the output folder", rootPath.append(jp.getOutputLocation()).append("/application.properties").toFile()
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.exists());
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assertTrue("'DemoApplication.class' is NOT in the output folder", rootPath.append(jp.getOutputLocation())
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.append("/com/example/demo/DemoApplication.class").makeAbsolute().toFile().exists());
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IFile pomXml = project.getFile("pom.xml");
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String content = Files.readString(Path.of(pomXml.getLocationURI()));
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pomXml.setContents(new ByteArrayInputStream("Nothing".getBytes()), true, false, null);
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waitForJobsToComplete(monitor);
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Thread.sleep(5000);
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// Invalid pom file. JavaBuilder built java sources but MavenBuilder wqs unable to do anything hence no resources in the target folder except for compiled classes
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assertFalse("'application.properties' hasn't been removed from the output folder", rootPath.append(jp.getOutputLocation()).append("/application.properties").toFile()
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.exists());
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assertTrue("'DemoApplication.class' should be created in the output folder by JavaBuilder", rootPath.append(jp.getOutputLocation())
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.append("/com/example/demo/DemoApplication.class").toFile().exists());
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pomXml.setContents(new ByteArrayInputStream(content.getBytes()), true, false, null);
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waitForJobsToComplete(monitor);
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Thread.sleep(5000);
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// Valid pom file. Compiled classes and resources should reappear in the target folder. However, resources are missing which makes the test fail
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assertTrue("'DemoApplication.class' hasn't been created in the output folder", rootPath.append(jp.getOutputLocation())
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.append("/com/example/demo/DemoApplication.class").toFile().exists());
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assertTrue("'application.properties' hasn't been copied in the output folder", rootPath.append(jp.getOutputLocation()).append("/application.properties").toFile()
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.exists());
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}
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}

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