public void Remove() { var rd = new RouletteDictionary <string, int>(); for (int i = 0; i < 10; i++) { rd[i.ToString()] = i; } Assert.Equal(10, rd.Count); // remove evens. for (int i = 0; i < 10; i += 2) { rd.Remove(i.ToString()); } Assert.Equal(5, rd.Count); for (int i = 0; i < 10; i++) { bool found = rd.TryGetValue(i.ToString(), out int ret); if (i % 2 == 0) { Assert.False(found); } else { Assert.True(found); Assert.Equal(i, ret); } } }
public void ZeroHash() { // Check hashcode of 0, which is a special case. var rd = new RouletteDictionary <string, string>(100, new BadHasher()); rd.Add("foo", "bar"); Assert.Equal("bar", rd["foo"]); Assert.True(rd.Remove("foo")); }
public void RemoveMissing() { var rd = new RouletteDictionary <string, int>(); for (int i = 0; i < 10; i++) { rd.Add(i.ToString(), i); } Assert.False(rd.Remove("12345")); }
public void ContainsValue() { var rd = new RouletteDictionary <string, int>(); for (int i = 0; i < 100; i++) { rd.Add(i.ToString(), i); } rd.Remove("42"); Assert.True(rd.ContainsValue(66)); Assert.True(rd.Values.Contains(88)); Assert.False(rd.ContainsValue(42)); Assert.False(rd.ContainsValue(543434)); }
public void EnumerateValues() { var rd = new RouletteDictionary <int, int>(); for (int i = 0; i < 100; i++) { rd.Add(i, i); } rd.Remove(99); bool[] returnedVals = new bool[99]; foreach (var val in rd.Values) { Assert.False(returnedVals[val], "value was returned twice from enumerator"); returnedVals[val] = true; } foreach (bool found in returnedVals) { Assert.True(found, "a value was not returned"); } }
public void EnumerateKeys() { var rd = new RouletteDictionary <int, int>(); for (int i = 0; i < 100; i++) { rd.Add(i, i); } rd.Remove(99); bool[] returnedKeys = new bool[99]; foreach (var key in rd.Keys) { Assert.False(returnedKeys[key], "key was returned twice from enumerator"); returnedKeys[key] = true; } foreach (bool found in returnedKeys) { Assert.True(found, "a key was not returned"); } }
public void CheckEnumerator() { var rd = new RouletteDictionary <string, int>(); for (int i = 0; i < 10; i++) { rd.Add(i.ToString(), i); } bool removed = rd.Remove("9"); Assert.True(removed); int counter = 0; foreach (var kvp in rd) { Assert.True(kvp.Value < 9); counter++; } Assert.Equal(9, counter); }
public void RemoveAndResize() { var rd = new RouletteDictionary <string, int>(); // Add first 500. for (int i = 0; i < 500; i++) { rd.Add(i.ToString(), i); } // remove everything divisible by 7 for (int i = 0; i < 500; i += 7) { bool removed = rd.Remove(i.ToString()); Assert.True(removed); } // Add 2000 more elements to force resizing. for (int i = 500; i < 2500; i++) { rd.Add(i.ToString(), i); } for (int i = 0; i < 2500; i++) { bool found = rd.TryGetValue(i.ToString(), out int ret); if ((i < 500) && (i % 7 == 0)) { Assert.False(found); } else { Assert.True(found); Assert.Equal(i, ret); } } }
public void RemoveAddAgain() { var rd = new RouletteDictionary <string, int>(); for (int i = 0; i < 10; i++) { rd[i.ToString()] = i; } rd.Remove("7"); Assert.Equal(9, rd.Count); Assert.False(rd.ContainsKey("7")); Assert.True(rd.ContainsKey("8")); // put it back in, make sure everything's still ok: rd["7"] = 7; Assert.Equal(10, rd.Count); for (int i = 0; i < 10; i++) { Assert.Equal(i, rd[i.ToString()]); } }