public void TestContainsKey() { Assert.IsTrue(hm.ContainsKey(876.ToString()), "Returned false for valid key"); Assert.IsTrue(!hm.ContainsKey("KKDKDKD"), "Returned true for invalid key"); HashMap <Object, Object> m = new HashMap <Object, Object>(); m.Put(null, "test"); Assert.IsTrue(m.ContainsKey(null), "Assert.Failed with null key"); Assert.IsTrue(!m.ContainsKey(0), "Assert.Failed with missing key matching null hash"); }
public override bool Contains(E obj) { return(backingMap.ContainsKey(obj)); }
public void TestPut2() { hm.Put("KEY", "VALUE"); Assert.AreEqual("VALUE", hm.Get("KEY"), "Assert.Failed to install key/value pair"); HashMap <Object, Object> m = new HashMap <Object, Object>(); m.Put(0, "short"); m.Put(null, "test"); m.Put(0, "int"); Assert.AreEqual("int", m.Get(0), "Assert.Failed adding to bucket containing null"); Assert.AreEqual("int", m.Get(0), "Assert.Failed adding to bucket containing null2"); // Check my actual key instance is returned HashMap <Object, String> map = new HashMap <Object, String>(); for (int i = -32767; i < 32768; i++) { map.Put(i, "foobar"); } Object myKey = 0; // Put a new value at the old key position map.Put(myKey, "myValue"); Assert.IsTrue(map.ContainsKey(myKey)); Assert.AreEqual("myValue", map.Get(myKey)); bool found = false; for (Iterator <Object> itr = map.KeySet().Iterator(); itr.HasNext;) { Object key = itr.Next(); if (found = key == myKey) { break; } } Assert.IsFalse(found, "Should not find new key instance in hashmap"); // Add a new key instance and check it is returned Assert.IsNotNull(map.Remove(myKey)); map.Put(myKey, "myValue"); Assert.IsTrue(map.ContainsKey(myKey)); Assert.AreEqual(map.Get(myKey), "myValue"); for (Iterator <Object> itr = map.KeySet().Iterator(); itr.HasNext;) { Object key = itr.Next(); if (found = key == myKey) { break; } } Assert.IsTrue(found, "Did not find new key instance in hashmap"); // Ensure keys with identical hashcode are stored separately HashMap <Object, Object> objmap = new HashMap <Object, Object>(); for (int i = 0; i < 32768; i++) { objmap.Put(i, "foobar"); } // Put non-equal object with same hashcode MyKey aKey = new MyKey(); Assert.IsNull(objmap.Put(aKey, "value")); Assert.IsNull(objmap.Remove(new MyKey())); Assert.AreEqual(objmap.Get(0), "foobar"); Assert.AreEqual(objmap.Get(aKey), "value"); }
public override bool Contains(K key) { return(parent.ContainsKey(key)); }