@Test
    public void testDefaultSourceFromProperty() {
        // TODO: Unable to set environment, so only able to test property usage for now
        System.setProperty("configsources", "foo:123,bar:345,tcp/baz:333,quux");
        ConfigSourceSet set = ConfigSourceSet.createDefault();
        assertEquals(4, set.getSources().size());
        assertTrue(set.getSources().contains("tcp/foo:123"));
        assertTrue(set.getSources().contains("tcp/bar:345"));
        assertTrue(set.getSources().contains("tcp/baz:333"));
        assertTrue(set.getSources().contains("tcp/quux"));
    }
@author <a href="gv@yahoo-inc.com">G. Voldengen</a>
config/src/test/java/com/yahoo/config/subscription/ConfigSourceSetTest.java