@Test
public void testGetProperties1() throws Exception {

    try {
        System.setProperty(CommonConstants.DUBBO_PROPERTIES_KEY, "properties.load");
        Properties p = ConfigUtils.getProperties();
        assertThat((String) p.get("a"), equalTo("12"));
        assertThat((String) p.get("b"), equalTo("34"));
        assertThat((String) p.get("c"), equalTo("56"));
    } finally {
        System.clearProperty(CommonConstants.DUBBO_PROPERTIES_KEY);
    }
}