assertTrue(DefaultMirrorSelector.matchPattern(getRepo("c", "http://somehost"), "!a,external:*"));
    }

    @Test
    void testLayoutPattern() {
        assertTrue(DefaultMirrorSelector.matchesLayout("default", null));
        assertTrue(DefaultMirrorSelector.matchesLayout("default", ""));
        assertTrue(DefaultMirrorSelector.matchesLayout("default", "*"));