/** Check if the getSubBuilders properly predicts the output. */
  public static void testSubBuilders() throws Exception {
    Workspace ws = Workspace.getWorkspace(new File("test/ws"));
    Project project = ws.getProject("p4-sub");

    Collection<? extends Builder> bs = project.getSubBuilders();
    assertNotNull(bs);
    assertEquals(3, bs.size());
    Set<String> names = new HashSet<String>();
    for (Builder b : bs) {
      names.add(b.getBsn());
    }
    assertTrue(names.contains("p4-sub.a"));
    assertTrue(names.contains("p4-sub.b"));
    assertTrue(names.contains("p4-sub.c"));

    File[] files = project.build();
    assertTrue(project.check());

    System.err.println(Processor.join(project.getErrors(), "\n"));
    System.err.println(Processor.join(project.getWarnings(), "\n"));
    assertEquals(0, project.getErrors().size());
    assertEquals(0, project.getWarnings().size());
    assertNotNull(files);
    assertEquals(3, files.length);
    for (File file : files) {
      Jar jar = new Jar(file);
      Manifest m = jar.getManifest();
      assertTrue(names.contains(m.getMainAttributes().getValue("Bundle-SymbolicName")));
    }
  }
  private void checkStartup(
      Map<String, ServiceData> map,
      List<ServiceData> start,
      ServiceData sd,
      Set<ServiceData> cyclic) {
    if (sd.after.isEmpty() || start.contains(sd)) return;

    if (cyclic.contains(sd)) {
      reporter.error("Cyclic dependency for " + sd.name);
      return;
    }

    cyclic.add(sd);

    for (String dependsOn : sd.after) {
      if (dependsOn.equals("boot")) continue;

      ServiceData deps = map.get(dependsOn);
      if (deps == null) {
        reporter.error("No such service " + dependsOn + " but " + sd.name + " depends on it");
      } else {
        checkStartup(map, start, deps, cyclic);
      }
    }
    start.add(sd);
  }
  private static String[] findStandardMBeans(URL codeBase) throws Exception {
    Set<String> names;
    if (codeBase.getProtocol().equalsIgnoreCase("file") && codeBase.toString().endsWith("/"))
      names = findStandardMBeansFromDir(codeBase);
    else names = findStandardMBeansFromJar(codeBase);

    Set<String> standardMBeanNames = new TreeSet<String>();
    for (String name : names) {
      if (name.endsWith("MBean")) {
        String prefix = name.substring(0, name.length() - 5);
        if (names.contains(prefix)) standardMBeanNames.add(prefix);
      }
    }
    return standardMBeanNames.toArray(new String[0]);
  }