assertEquals(
                new File(basedir, "artifact.jar").getAbsolutePath(),
                new File(rDeps.get(0).getSystemPath()).getAbsolutePath());
    }

    @Test
    public void testRecursiveExpressionCycleNPE() throws Exception {
        Map<String, String> props = new HashMap<>();
        props.put("aa", "${bb}");
        props.put("bb", "${aa}");