@Test
public void testGetRemainingClassNames() {

    Set<Class<?>> classes = new HashSet<Class<?>>();
    classes.add(XLog.class);
    classes.add(MethodToLog.class);
    classes.add(Object.class);
    Set<String> expected = new HashSet<String>();
    expected.add("com.promegu.other.class1");
    expected.add("com.promegu.other.class2");
    expected.add("java.lang.test.Object");
    expected.add("retrofit");
    expected.add("retrofit.utils");
    assertThat(
            XLogUtils.getRemainingClassNames(classes, new HashSet<String>(CLASS_NAMES)),
            is(expected));
}