public void testIteration() {
assertTrue(_nbhm.isEmpty());
assertThat(_nbhm.put("k1", "v1"), nullValue());
assertThat(_nbhm.put("k2", "v2"), nullValue());
String str1 = "";
for (Iterator<Map.Entry<String, String>> i = _nbhm.entrySet().iterator(); i.hasNext(); ) {
Map.Entry<String, String> e = i.next();
str1 += e.getKey();
}
assertThat("found all entries", str1, anyOf(is("k1k2"), is("k2k1")));
String str2 = "";
for (Iterator<String> i = _nbhm.keySet().iterator(); i.hasNext(); ) {
String key = i.next();
str2 += key;
}
assertThat("found all keys", str2, anyOf(is("k1k2"), is("k2k1")));
String str3 = "";
for (Iterator<String> i = _nbhm.values().iterator(); i.hasNext(); ) {
String val = i.next();
str3 += val;
}
assertThat("found all vals", str3, anyOf(is("v1v2"), is("v2v1")));
assertThat(
"toString works", _nbhm.toString(), anyOf(is("{k1=v1, k2=v2}"), is("{k2=v2, k1=v1}")));
}
// Check that the iterator iterates the correct number of times
private void checkSizes(String msg, int sz, Iterator it, int expectedSize) {
assertEquals(msg, expectedSize, sz);
int result = 0;
while (it.hasNext()) {
result++;
it.next();
}
assertEquals(msg, expectedSize, result);
}
// ---
public void testNonBlockingIdentityHashMapIteratorMultithreaded()
throws InterruptedException, ExecutionException {
TestKeyFeeder feeder = getTestKeyFeeder();
final int itemCount = feeder.size();
// validate results
final NonBlockingIdentityHashMap<Long, TestKey> items = feeder.getMapMultithreaded();
assertEquals("size()", itemCount, items.size());
assertEquals("values().size()", itemCount, items.values().size());
assertEquals("entrySet().size()", itemCount, items.entrySet().size());
int iteratorCount = 0;
for (TestKey m : items.values()) iteratorCount++;
// sometimes a different result comes back the second time
int iteratorCount2 = 0;
for (Iterator<TestKey> it = items.values().iterator(); it.hasNext(); ) {
iteratorCount2++;
it.next();
}
assertEquals("iterator counts differ", iteratorCount, iteratorCount2);
assertEquals("values().iterator() count", itemCount, iteratorCount);
}