@Test
public void mirroredSet() throws Exception {
ObservableSet<String> source = FXCollections.observableSet();
source.add("alpha");
source.add("beta");
ObservableSet<String> dest = ObservableMirrors.mirrorSet(source, gate);
assertEquals(0, gate.getTaskQueueSize());
assertEquals(2, dest.size());
source.add("delta");
assertEquals(1, gate.getTaskQueueSize());
assertEquals(2, dest.size());
gate.waitAndRun();
assertEquals(0, gate.getTaskQueueSize());
assertEquals(3, dest.size());
source.removeAll(ImmutableList.of("alpha", "beta"));
assertEquals(2, gate.getTaskQueueSize());
gate.waitAndRun();
gate.waitAndRun();
assertEquals(1, dest.size());
assertTrue(dest.contains("delta"));
}
