@Test
void property() {

    System.setProperty("sys.cache.host", "overrideHost");
    propertyManager.properties.set("sys.cache.host", "host");
    assertThat(propertyManager.property("sys.cache.host")).hasValue("overrideHost");
    System.clearProperty("sys.cache.host");
    assertThat(propertyManager.property("sys.cache.host")).hasValue("host");
}