@Test
    public void test_loadDataStoreNameList_validXml() throws Exception {
        // Create test JAR with valid XML
        final File jarFile = new File(tempDir, "test-datastore.jar");
        createTestJarWithXml(jarFile,
                "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" + "<components>\n"
                        + "  <component class=\"org.codelibs.fess.ds.impl.CsvDataStore\"/>\n"

                if (form.jarFile == null) {
                    throwValidationError(messages -> messages.addErrorsPluginFileIsNotFound(GLOBAL, form.id), this::asListHtml);
                }
                if (!form.jarFile.getFileName().endsWith(".jar")) {
                    throwValidationError(messages -> messages.addErrorsFileIsNotSupported(GLOBAL, form.jarFile.getFileName()),

                    final JarURLConnection jarURLConnection = (JarURLConnection) resource.openConnection();
                    try (JarFile jarFile = jarURLConnection.getJarFile()) {
                        final Enumeration<JarEntry> entries = jarFile.entries();
                        while (entries.hasMoreElements()) {
                            final JarEntry entry = entries.nextElement();