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() {

    assertEquals("", new ClassInfo(FILE, "a/b/Bar$1.class", classLoader).getSimpleName());
    assertEquals("Local", new ClassInfo(FILE, "a/b/Bar$1Local.class", classLoader).getSimpleName());
  }

  public void testGetPackageName() {
    assertEquals(
        "", new ClassInfo(FILE, "Foo.class", getClass().getClassLoader()).getPackageName());
    assertEquals(