@Test
public void testGet() throws Exception {

    PropertySource ps = DefaultPropertySourceSnapshot.of(MY_PS);
    assertThat(ps).isNotNull();
    for (Map.Entry<String, PropertyValue> e : MY_PS.getProperties().entrySet()) {
        assertThat(ps.get(e.getKey()).getValue()).isEqualTo(e.getValue().getValue());
    }
}