@Test public void testDefault() { final SystemProperties props = SystemProperties.getDefault(); final String propKey = System.getProperties().keySet().iterator().next().toString(); final String propValue = System.getProperties().getProperty(propKey); assertEquals(propValue, props.get(propKey)); final String envKey = System.getenv().keySet().iterator().next(); final String envValue = System.getenv(envKey); assertEquals(envValue, props.getEnv(envKey)); }