assertEquals(0, domainFilter.cachedIncludeSet.size());
        assertEquals(0, domainFilter.cachedExcludeSet.size());

        domainFilter.processUrl("http://example.com/");

        assertEquals(1, domainFilter.cachedIncludeSet.size());
        assertEquals(1, domainFilter.cachedExcludeSet.size());
        assertEquals("http://example.com/.*", domainFilter.cachedIncludeSet.toArray()[0]);