@Test
public void testIsAssignableFrom() throws MalformedURLException, ClassNotFoundException {

    // single class loader
    testIsAssignableFrom0();
    // over different class loader
    String codebase = ReflectUtils.getCodeBase(ClassUtilsTest.class);
    String url = "file://" + codebase;
    loader = new URLClassLoader(new URL[] { new URL(url) }, null);
    try {
        testIsAssignableFrom0();
    } finally {
        loader = null;
    }
}