@Test
public void checkCreationAndUsageWrapperByInterface()
        throws Exception {

    IWrapperGenerator wg = new WrapperGenerator(null);
    IWrapper w1 = wg.generate(IWrapper.class);
    assertNotNull(w1);
    // re-usage
    IWrapper w2 = wg.generate(IWrapper.class);
    assertNotNull(w2);
    assertNotSame(w1, w2);
}