8261518: jpackage looks for main module in current dir when there is no module-path

Reviewed-by: asemenyuk, almatvee, kizune

src/jdk.jpackage/share/classes/jdk/jpackage/internal/LauncherData.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2020, 2021, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -306,10 +306,11 @@ final class LauncherData {
     private static List<Path> getPathListParameter(String paramName,
             Map<String, ? super Object> params) throws ConfigException {
         return getPathParam(params, paramName, () -> {
-            String value = params.getOrDefault(paramName, "").toString();
-        return List.of(value.split(File.pathSeparator)).stream()
-                .map(Path::of)
-                .collect(Collectors.toUnmodifiableList());
+            String value = (String) params.get(paramName);
+            return (value == null) ? List.of() :
+                    List.of(value.split(File.pathSeparator)).stream()
+                    .map(Path::of)
+                    .collect(Collectors.toUnmodifiableList());
         });
     }
 

test/jdk/tools/jpackage/share/jdk/jpackage/tests/NoMPathRuntimeTest.java

@@ -0,0 +1,136 @@
+/*
+ * Copyright (c) 2020, 2021, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package jdk.jpackage.tests;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.util.Collection;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.stream.Stream;
+import java.nio.file.Path;
+import jdk.jpackage.test.Annotations.Parameters;
+import jdk.jpackage.test.Annotations.Test;
+import jdk.jpackage.test.Executor;
+import jdk.jpackage.test.JPackageCommand;
+import jdk.jpackage.test.JavaAppDesc;
+import jdk.jpackage.test.JavaTool;
+import jdk.jpackage.test.TKit;
+import jdk.jpackage.test.HelloApp;
+
+
+/*
+ * @test
+ * @summary test '--runtime-image' option of jpackage
+ * @library ../../../../helpers
+ * @build jdk.jpackage.test.*
+ * @modules jdk.jpackage/jdk.jpackage.internal
+ * @compile NoMPathRuntimeTest.java
+ * @run main/othervm/timeout=360 -Xmx512m jdk.jpackage.test.Main
+ *  --jpt-run=jdk.jpackage.tests.NoMPathRuntimeTest
+ */
+
+public final class NoMPathRuntimeTest {
+
+    public NoMPathRuntimeTest(String jlinkOutputSubdir, String runtimeSubdir) {
+        this.jlinkOutputSubdir = Path.of(jlinkOutputSubdir);
+        this.runtimeSubdir = Path.of(runtimeSubdir);
+    }
+
+    @Test
+    public void test() throws IOException {
+        JavaAppDesc appDesc = JavaAppDesc.parse("com.foo/com.foo.main.Aloha");
+
+        JPackageCommand cmd = JPackageCommand.helloAppImage(appDesc);
+
+        // Build module jar.
+        cmd.executePrerequisiteActions();
+
+        final Path workDir = TKit.createTempDirectory("runtime").resolve("data");
+        final Path jlinkOutputDir = workDir.resolve(jlinkOutputSubdir);
+        Files.createDirectories(jlinkOutputDir.getParent());
+
+        // List of modules required for test app.
+        final var modules = new String[] {
+            "java.base",
+            "java.desktop"
+        };
+
+        Executor jlink = new Executor()
+        .setToolProvider(JavaTool.JLINK)
+        .dumpOutput()
+        .addArguments(
+                "--add-modules", String.join(",", modules),
+                "--output", jlinkOutputDir.toString(),
+                "--strip-debug",
+                "--no-header-files",
+                "--no-man-pages");
+
+        jlink.addArguments("--add-modules", appDesc.moduleName(),
+               "--module-path", Path.of(cmd.getArgumentValue("--module-path"))
+               .resolve("hello.jar").toString());
+
+        jlink.execute();
+
+        // non-modular jar in current dir caused error whe no module-path given
+        cmd.removeArgumentWithValue("--module-path");
+
+        cmd.setArgumentValue("--runtime-image", workDir.resolve(runtimeSubdir));
+        Path junkJar = null;
+        try {
+            // create a non-modular jar in the current directory
+            junkJar = HelloApp.createBundle(
+                    JavaAppDesc.parse("junk.jar:Hello"), Path.of("."));
+
+            cmd.executeAndAssertHelloAppImageCreated();
+        } finally {
+            if (junkJar != null) {
+                TKit.deleteIfExists(junkJar);
+            }
+        }
+
+    }
+
+    @Parameters
+    public static Collection data() {
+
+        final List<String[]> paths = new ArrayList<>();
+        paths.add(new String[] { "", "" });
+        if (TKit.isOSX()) {
+            // On OSX jpackage should accept both runtime root and runtime home
+            // directories.
+            paths.add(new String[] { "Contents/Home", "" });
+        }
+
+        List<Object[]> data = new ArrayList<>();
+        for (var pathCfg : paths) {
+            data.add(new Object[] { pathCfg[0], pathCfg[1] });
+        }
+
+        return data;
+    }
+
+    private final Path jlinkOutputSubdir;
+    private final Path runtimeSubdir;
+}