Add test for jarred test classes not being found

#1724

platform-tooling-support-tests/src/test/java/platform/tooling/support/tests/StandaloneTests.java

@@ -14,13 +14,17 @@
 import static org.junit.jupiter.api.Assertions.assertLinesMatch;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
+import java.io.File;
 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
+import java.util.ArrayList;
 
+import de.sormuras.bartholdy.jdk.Jar;
 import de.sormuras.bartholdy.jdk.Javac;
 import de.sormuras.bartholdy.tool.Java;
 
+import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.MethodOrderer;
 import org.junit.jupiter.api.Order;
 import org.junit.jupiter.api.Test;
@@ -37,7 +41,7 @@ class StandaloneTests {
 
 	@Test
 	@Order(1)
-	void compile() {
+	void compile() throws Exception {
 		var workspace = Request.WORKSPACE.resolve("standalone");
 		var result = Request.builder() //
 				.setTool(new Javac()) //
@@ -52,6 +56,17 @@ void compile() {
 		assertEquals(0, result.getExitCode(), String.join("\n", result.getOutputLines("out")));
 		assertTrue(result.getOutput("out").isEmpty());
 		assertTrue(result.getOutput("err").isEmpty());
+
+		// create "tests.jar" that'll be picked-up by "testWithJarredTestClasses()" later
+		var jarFolder = Files.createDirectories(workspace.resolve("jar"));
+		var jarResult = Request.builder() //
+				.setTool(new Jar()) //
+				.setProject("standalone") //
+				.addArguments("--create") //
+				.addArguments("--file", jarFolder.resolve("tests.jar")) //
+				.addArguments("-C", workspace.resolve("bin"), ".") //
+				.build().run(false);
+		assertEquals(0, jarResult.getExitCode(), String.join("\n", jarResult.getOutputLines("out")));
 	}
 
 	@Test
@@ -87,4 +102,32 @@ void test() throws IOException {
 		assertTrue(result.getOutput("err").contains("junit-vintage"
 				+ " (group ID: org.junit.vintage, artifact ID: junit-vintage-engine, version: " + vintageVersion));
 	}
+
+	@Test
+	@Order(3)
+	@Disabled("https://github.com/junit-team/junit5/issues/1724")
+	void testWithJarredTestClasses() {
+		var root = Path.of("../../..");
+		var jar = root.resolve(Helper.createJarPath("junit-platform-console-standalone"));
+		var path = new ArrayList<String>();
+		// path.add("bin"); // "exploded" test classes are found, see also test() above
+		path.add(Request.WORKSPACE.resolve("standalone/jar/tests.jar").toString());
+		path.add(jar.toString());
+		var result = Request.builder() //
+				.setTool(new Java()) //
+				.setProject("standalone") //
+				.addArguments("--show-version") //
+				.addArguments("-enableassertions") //
+				.addArguments("-Djava.util.logging.config.file=logging.properties") //
+				.addArguments("--class-path", String.join(File.pathSeparator, path)) //
+				.addArguments("org.junit.platform.console.ConsoleLauncher") //
+				.addArguments("--scan-class-path") //
+				.addArguments("--disable-banner") //
+				.addArguments("--include-classname", "standalone.*") //
+				.addArguments("--fail-if-no-tests") //
+				.build() //
+				.run(false);
+
+		assertEquals(1, result.getExitCode(), String.join("\n", result.getOutputLines("out")));
+	}
 }