assertTrue(DefaultMirrorSelector.matchPattern(getRepo("a"), "a,"));

        assertFalse(DefaultMirrorSelector.matchPattern(getRepo("b"), "a"));
        assertFalse(DefaultMirrorSelector.matchPattern(getRepo("b"), "a,"));
        assertFalse(DefaultMirrorSelector.matchPattern(getRepo("b"), ",a"));
        assertFalse(DefaultMirrorSelector.matchPattern(getRepo("b"), ",a,"));

                    return mirror;
                }
            }

            for (Mirror mirror : mirrors) {
                if (matchPattern(repository, mirror.getMirrorOf()) && matchesLayout(repository, mirror)) {
                    return mirror;
                }
            }
        }

        return null;
    }

    /**