[tycho-4.0.x] Add support for JUnit 'vintage' attribute on classpath

tycho-its/projects/surefire.combinedtests/bundle5.no.vintage.test/.classpath

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="src" output="test" path="src_test">
+		<attributes>
+			<attribute name="test" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="src" path="src2"/>
+	<classpathentry kind="src" output="test" path="integration-tests">
+		<attributes>
+			<attribute name="test" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11">
+		<attributes>
+			<attribute name="module" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.junit.JUNIT_CONTAINER/5">
+		<attributes>
+			<attribute name="vintage" value="false" />
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="output" path="bin"/>
+</classpath>

tycho-its/projects/surefire.combinedtests/bundle5.no.vintage.test/META-INF/MANIFEST.MF

@@ -0,0 +1,9 @@
+Manifest-Version: 1.0
+Bundle-ManifestVersion: 2
+Bundle-Name: Test Plug-in
+Bundle-SymbolicName: bundle.test5
+Bundle-Version: 1.0.0
+Import-Package: javax.annotation,
+ org.osgi.framework
+Automatic-Module-Name: bundle.test5
+Bundle-RequiredExecutionEnvironment: JavaSE-11

tycho-its/projects/surefire.combinedtests/bundle5.no.vintage.test/build.properties

@@ -0,0 +1,4 @@
+source.. = src/,src2/
+output.. = bin/
+bin.includes = META-INF/,\
+               .

tycho-its/projects/surefire.combinedtests/bundle5.no.vintage.test/pom.xml

@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project>
+	<modelVersion>4.0.0</modelVersion>
+	<groupId>org.eclipse.tycho.tycho-its.surefire</groupId>
+	<artifactId>bundle.test5</artifactId>
+	<packaging>eclipse-plugin</packaging>
+	<version>1.0.0</version>
+	<properties>
+		<target-platform>https:////download.eclipse.org/releases/2022-12/</target-platform>
+		<tycho-version>4.0.0-SNAPSHOT</tycho-version>
+	</properties>
+	<repositories>
+		<repository>
+			<id>platform</id>
+			<url>${target-platform}</url>
+			<layout>p2</layout>
+		</repository>
+	</repositories>
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.eclipse.tycho</groupId>
+				<artifactId>tycho-maven-plugin</artifactId>
+				<version>${tycho-version}</version>
+				<extensions>true</extensions>
+			</plugin>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-surefire-plugin</artifactId>
+				<version>3.0.0-M5</version>
+				<dependencies>
+					<dependency>
+						<groupId>org.apache.maven.surefire</groupId>
+						<artifactId>surefire-junit47</artifactId>
+						<version>3.0.0-M5</version>
+					</dependency>
+				</dependencies>
+				<executions>
+					<execution>
+						<id>execute-tests</id>
+						<goals>
+							<goal>test</goal>
+						</goals>
+					</execution>
+				</executions>
+			</plugin>
+		</plugins>
+	</build>
+</project>

tycho-its/projects/surefire.combinedtests/bundle5.no.vintage.test/src/bundle/test/CountDown.java

@@ -0,0 +1,38 @@
+/*******************************************************************************
+ * Copyright (c) 2021 Christoph Läubrich and others.
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License 2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *    Christoph Läubrich. - initial API and implementation
+ *******************************************************************************/
+package bundle.test;
+
+public class CountDown {
+
+	RefMe refFromOtherSourceFolder;
+
+	int count;
+
+	public CountDown(int initalValue) {
+		count = initalValue;
+	}
+
+	public void decrement(int x) {
+		if (x < 0) {
+			throw new IllegalArgumentException();
+		}
+		if (count-x < 0) {
+			throw new IllegalStateException();
+		}
+		count -= x;
+	}
+
+	public int get() {
+		return count;
+	}
+}

tycho-its/projects/surefire.combinedtests/bundle5.no.vintage.test/src/bundle/test/Counter.java

@@ -0,0 +1,29 @@
+/*******************************************************************************
+ * Copyright (c) 2021 Christoph Läubrich and others.
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License 2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *    Christoph Läubrich. - initial API and implementation
+ *******************************************************************************/
+package bundle.test;
+
+public class Counter {
+
+	int count;
+
+	public void increment(int x) {
+		if (x < 0) {
+			throw new IllegalArgumentException();
+		}
+		count += x;
+	}
+
+	public int get() {
+		return count;
+	}
+}

tycho-its/projects/surefire.combinedtests/bundle5.no.vintage.test/src2/bundle/test/RefMe.java

@@ -0,0 +1,18 @@
+/*******************************************************************************
+ * Copyright (c) 2021 Christoph Läubrich and others.
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License 2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *    Christoph Läubrich. - initial API and implementation
+ *******************************************************************************/
+
+package bundle.test;
+
+public class RefMe extends Counter{
+
+}

tycho-its/projects/surefire.combinedtests/bundle5.no.vintage.test/src_test/bundle/test/AdderTest.java

@@ -0,0 +1,35 @@
+/*******************************************************************************
+ * Copyright (c) 2021 Christoph Läubrich and others.
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License 2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *    Christoph Läubrich. - initial API and implementation
+ *******************************************************************************/
+package bundle.test;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+public class AdderTest {
+
+    @org.junit.jupiter.api.Test
+	public void incrementTest() {
+		Counter counter = new Counter();
+		counter.increment(1);
+		counter.increment(3);
+		assertEquals(4, counter.get());
+    }
+
+    @org.junit.jupiter.api.Test
+	public void decrementTest() {
+		assertThrows(IllegalArgumentException.class, ()->{
+			Counter counter = new Counter();
+			counter.increment(-1);
+		});
+	}
+}

tycho-its/projects/surefire.combinedtests/bundle5.no.vintage.test/src_test/bundle/test/SubtractorTest.java

@@ -0,0 +1,40 @@
+/*******************************************************************************
+ * Copyright (c) 2021 Christoph Läubrich and others.
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License 2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *    Christoph Läubrich  - initial API and implementation
+ *******************************************************************************/
+package bundle.test;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Test;
+
+public class SubtractorTest {
+
+	@Test
+	public void incrementTest() {
+		CountDown counter = new CountDown(10);
+		counter.decrement(1);
+		counter.decrement(3);
+		assertEquals(6, counter.get());
+	}
+
+	@Test(expected = IllegalArgumentException.class)
+	public void decrementTest() {
+		CountDown counter = new CountDown(10);
+		counter.decrement(-1);
+	}
+
+	@Test(expected = IllegalStateException.class)
+	public void decrementTest2() {
+		CountDown counter = new CountDown(1);
+		counter.decrement(5);
+	}
+}

tycho-its/src/test/java/org/eclipse/tycho/test/surefire/TestsInBundleTest.java

@@ -47,6 +47,15 @@ public void testCompile5() throws Exception {
 				new File(verifier.getBasedir(), "target/test-classes/bundle/test/AdderTest.class").exists());
 	}
 
+	@Test
+	public void testCompile5WithoutVintage() throws Exception {
+		Verifier verifier = getVerifier("surefire.combinedtests/bundle5.no.vintage.test");
+		assertThrows("Compilation must fail because the usage of junit 4 annotations", VerificationException.class,
+				() -> verifier.executeGoals(Arrays.asList("clean", "test-compile")));
+		verifier.verifyTextInLog("The import org.junit.Assert cannot be resolved");
+		verifier.verifyTextInLog("The import org.junit.Test cannot be resolved");
+	}
+
 	@Test
 	public void testTest() throws Exception {
 		Verifier verifier = getVerifier("surefire.combinedtests/bundle.test");

tycho-metadata-model/src/main/java/org/eclipse/tycho/model/classpath/ClasspathParser.java

@@ -220,11 +220,24 @@ public Collection<JUnitBundle> getArtifacts() {
             } else if (JUNIT4.equals(junit)) {
                 return JUNIT4_PLUGINS;
             } else if (JUNIT5.equals(junit)) {
-                return JUNIT5_PLUGINS;
+                if (isVintage()) {
+                    return JUNIT5_PLUGINS;
+                } else {
+                    return JUNIT5_WITHOUT_VINTAGE_PLUGINS;
+                }
             }
             return Collections.emptyList();
         }
 
+        @Override
+        public boolean isVintage() {
+            String vintage = getAttributes().get("vintage");
+            if (vintage != null && !vintage.isBlank()) {
+                return Boolean.parseBoolean(vintage);
+            }
+            return true;
+        }
+
     }
 
     private static class JDTContainerClasspathEntry implements ClasspathContainerEntry {

tycho-metadata-model/src/main/java/org/eclipse/tycho/model/classpath/JUnitClasspathContainerEntry.java

@@ -76,6 +76,12 @@ public interface JUnitClasspathContainerEntry extends ClasspathContainerEntry {
             JUNIT_PLATFORM_SUITE_API_PLUGIN, JUNIT_VINTAGE_ENGINE_PLUGIN, JUNIT_OPENTEST4J_PLUGIN,
             JUNIT_APIGUARDIAN_PLUGIN, JUNIT4_PLUGIN, HAMCREST_CORE_PLUGIN);
 
+    static final List<JUnitBundle> JUNIT5_WITHOUT_VINTAGE_PLUGINS = List.of(JUNIT_JUPITER_API_PLUGIN,
+            JUNIT_JUPITER_ENGINE_PLUGIN, JUNIT_JUPITER_MIGRATIONSUPPORT_PLUGIN, JUNIT_JUPITER_PARAMS_PLUGIN,
+            JUNIT_PLATFORM_COMMONS_PLUGIN, JUNIT_PLATFORM_ENGINE_PLUGIN, JUNIT_PLATFORM_LAUNCHER_PLUGIN,
+            JUNIT_PLATFORM_RUNNER_PLUGIN, JUNIT_PLATFORM_SUITE_API_PLUGIN, JUNIT_OPENTEST4J_PLUGIN,
+            JUNIT_APIGUARDIAN_PLUGIN, HAMCREST_CORE_PLUGIN);
+
     /**
      * 
      * @return the JUnit part of the path
@@ -93,4 +99,12 @@ default boolean isTest() {
         return true;
     }
 
+    /**
+     * Checks if for JUnit5 the vintage engine has to be included. This is only meaningful if
+     * {@link #getJUnitSegment()} is equal to {@link #JUNIT5}
+     * 
+     * @return <code>true</code> if vintage is enabled (the default)
+     */
+    boolean isVintage();
+
 }