@Test
public void test_isAllPossibleValues() {

    RangerAbstractResourceMatcher matcher = new AbstractMatcherWrapper();
    for (String resource : new String[] { null, "", "*"}) {
        assertTrue(matcher.isAllValuesRequested(resource));
    }
    for (String resource : new String[] { " ", "\t", "\n", "foo"}) {
        assertFalse(matcher.isAllValuesRequested(resource));
    }
}