public void testAsEMap() throws Exception {
Map<String, String> map = new HashMap<String, String>();
EMap<String, String> eMap = ECollections.asEMap(map);
Map.Entry<String, String> entry = ECollections.singletonEMap("x", "y").get(0);
map.put("aKey", "aValue");
assertEquivalent(map, eMap);
eMap.put("bKey", "bValue");
assertEquivalent(map, eMap);
try {
eMap.move(1, 0);
fail("move(int, int) should throw UnsupportedOperationException)");
} catch (UnsupportedOperationException exception) {
// We expect to get here.
}
try {
eMap.move(1, eMap.get(0));
fail("move(int, Object) should throw UnsupportedOperationException)");
} catch (UnsupportedOperationException exception) {
// We expect to get here.
}
try {
eMap.add(0, entry);
fail("add(int, Object) should throw UnsupportedOperationException)");
} catch (UnsupportedOperationException exception) {
// We expect to get here.
}
try {
eMap.addAll(0, Collections.singleton(entry));
fail("addAll(int, Collection) should throw UnsupportedOperationException)");
} catch (UnsupportedOperationException exception) {
// We expect to get here.
}
eMap.add(entry);
assertEquivalent(map, eMap);
eMap.remove(entry);
assertEquivalent(map, eMap);
map.put("aKey", "aValue2");
assertEquivalent(map, eMap);
eMap.put("bKey", "bValue2");
assertEquivalent(map, eMap);
map.remove("aKey");
assertEquivalent(map, eMap);
eMap.remove("bKey");
assertEquivalent(map, eMap);
Map<String, String> otherMap = new HashMap<String, String>();
otherMap.put("aKey", "aValue");
otherMap.put("bKey", "bValue");
map.putAll(otherMap);
assertEquivalent(map, eMap);
map.clear();
assertEquivalent(map, eMap);
EMap<String, String> otherEMap = ECollections.asEMap(map);
otherEMap.put("aKey", "aValue");
otherEMap.put("bKey", "bValue");
eMap.putAll(otherEMap);
assertEquivalent(map, eMap);
eMap.clear();
assertEquivalent(map, eMap);
}
