- final TrieMap<Object, Object> bt = new TrieMap<> ();
- TestHelper.assertEquals (null, bt.put ("a", "a"));
- TestHelper.assertEquals (null, bt.put ("b", "b"));
- TestHelper.assertEquals (null, bt.put ("c", "b"));
- TestHelper.assertEquals (null, bt.put ("d", "b"));
- TestHelper.assertEquals (null, bt.put ("e", "b"));
+ final TrieMap<Object, Object> bt = new TrieMap<>();
+ assertNull(bt.put("a", "a"));
+ assertNull(bt.put("b", "b"));
+ assertNull(bt.put("c", "b"));
+ assertNull(bt.put("d", "b"));
+ assertNull(bt.put("e", "b"));