assertEquals("java.lang", Reflection.getPackageName(Iterable.class));
    assertEquals("java", Reflection.getPackageName("java.MyType"));
    assertEquals("java.lang", Reflection.getPackageName(Iterable.class.getName()));
    assertEquals("", Reflection.getPackageName("NoPackage"));
    assertEquals("java.util", Reflection.getPackageName(Map.Entry.class));
  }

  public void testNewProxy() throws Exception {

        final String path = ClassUtil.getPackageName(this.getClass()).replaceAll("\\.", "/") + "/aaa.html";
        final String contentType = MimeTypeUtil.guessContentType(path);
        assertEquals("text/html", contentType);
    }

    /**
     * @throws Exception
     */
    @Test
    public void testGetFromStream_gif() throws Exception {

    public ClassLinkMetaData(ClassMetaData classMetaData) {
        this.className = classMetaData.getClassName();
        this.simpleName = classMetaData.getSimpleName();
        this.packageName = classMetaData.getPackageName();
        this.style = LinkMetaData.Style.Javadoc;
        for (MethodMetaData method : classMetaData.getDeclaredMethods()) {
            addMethod(method, style);
        }

        assertThat(ClassUtil.isAssignableFrom(int.class, Integer.class), is(true));
    }

    /**
     *
     */
    @Test
    public void testGetPackageName() {
        assertThat(ClassUtil.getPackageName(getClass()), is("org.codelibs.core.lang"));
    }

    /**
     *
     */
    @Test
    public void testGetShortClassName() {

        final Set<String> packages = new LinkedHashSet<>();
        ClassMetaDataUtil.extractFromMetadata(getMetaDataFile().getAsFile().get(), getExcludedPackages().get(), classMetaData -> packages.add(classMetaData.getPackageName()));

        try (PrintWriter writer = new PrintWriter(new FileWriter(getImportsDestFile().getAsFile().get()))) {
            for (String packageName : packages) {
                writer.print("import ");

                if (classMetaData.getOuterClassName() != null) {
                    // Ignore inner classes
                    return;
                }
                String packageName = classMetaData.getPackageName();
                if (excludedPackages.contains(packageName)) {
                    return;
                }
                for (String excludedPrefix : excludedPrefixes) {

     * {@code class.getPackage().getName()} produces a {@code NullPointerException} because {@code
     * class.getPackage()} returns {@code null}.
     */
    public String getPackageName() {
      return Reflection.getPackageName(className);
    }

    /**
     * Returns the simple name of the underlying class as given in the source code.
     *

          .toSet();

  public void testClassesHaveOverrides() throws Exception {
    for (ClassInfo info : ClassPath.from(getClass().getClassLoader()).getAllClasses()) {
      if (!GUAVA_PACKAGES.contains(info.getPackageName())) {
        continue;
      }
      if (info.getName().endsWith("GwtSerializationDependencies")) {
        continue; // These classes exist only for the GWT compiler, not to be used.
      }
      if (
      /*

                }
            } else if (name.equals(baseName)) {
                return importedClass;
            }
        }

        candidateClassName = classMetaData.getPackageName() + "." + name;
        if (metaDataRepository.find(candidateClassName) != null) {
            return candidateClassName;
        }

        candidateClassName = "java.lang." + name;

      // a file.
      String visiblePackage = Reflection.getPackageName(cls);
      ImmutableList.Builder<Method> builder = ImmutableList.builder();
      for (Class<?> type : TypeToken.of(cls).getTypes().rawTypes()) {
        if (!Reflection.getPackageName(type).equals(visiblePackage)) {
          break;
        }
        for (Method method : type.getDeclaredMethods()) {