public void testChildrenNames() throws Exception {
Preferences subnode = pref.node("c1");
subnode.put("k", "v");
subnode.flush();
subnode = pref.node("c2");
subnode.put("k", "v");
subnode.flush();
subnode = pref.node("c3/c4");
subnode.put("k", "v");
subnode.flush();
assertEquals(
new TreeSet<String>(Arrays.asList("c1", "c2", "c3")),
new TreeSet<String>(Arrays.asList(storage.childrenNames())));
pref.node("c2").removeNode();
assertEquals(
new TreeSet<String>(Arrays.asList("c1", "c3")),
new TreeSet<String>(Arrays.asList(storage.childrenNames())));
pref.node("c3").removeNode();
assertEquals(
Collections.singleton("c1"), new TreeSet<String>(Arrays.asList(storage.childrenNames())));
pref.node("c1").removeNode();
assertEquals(
Collections.emptySet(), new TreeSet<String>(Arrays.asList(storage.childrenNames())));
}
