private void AssertOriginalAndReversedVersionsMatchExactly <TKey, TValue>(IBijectionDictionary <TKey, TValue> dictionary)
{
foreach (TKey key in dictionary.Keys)
{
TValue value = dictionary[key];
TKey reversedKey = dictionary.Reverse[value];
Assert.AreEqual(key, reversedKey, "Mismatch between original and reversed dictionaries for key " + key.ToString());
}
}
public void TestGivenUniqueKeyValuePairsWhenAddedToTwoWayDictionaryThenCanBeAccessed()
{
int maxCount = 10;
int lastIndex = maxCount - 1;
IBijectionDictionary <int, string> dict = GenerateNewTestDictionary(maxCount);
Assert.AreEqual(maxCount, dict.Count);
Assert.AreEqual(GetTestStringBasedOnIndex(0), dict[0]);
Assert.AreEqual(GetTestStringBasedOnIndex(lastIndex), dict[lastIndex]);
}
public void TestGivenTwoWayDictionaryWhenGettingReverseOfReverseThenReverseOfReverseIsTheSameObjectAsOriginal()
{
int maxCount = 10;
IBijectionDictionary <int, string> dict = GenerateNewTestDictionary(maxCount);
Assert.AreEqual(maxCount, dict.Count);
Assert.AreEqual(maxCount, dict.Reverse.Count);
Assert.AreEqual(maxCount, dict.Reverse.Reverse.Count);
Assert.AreSame(dict, dict.Reverse.Reverse);
}
public void TestGivenTwoWayDictionaryWhenAllItemsClearedThenReverseVersionIsAlsoEmpty()
{
int maxCount = 10;
IBijectionDictionary <int, string> dict = GenerateNewTestDictionary(maxCount);
Assert.AreEqual(maxCount, dict.Count, "GIVEN: Dictionary not setup correctly");
Assert.AreEqual(maxCount, dict.Reverse.Count, "GIVEN: Dictionary not setup correctly");
dict.Clear();
Assert.AreEqual(0, dict.Count);
Assert.AreEqual(0, dict.Reverse.Count);
}
public void TestGivenTwoWayDictionaryWhenRemoveItemsFromReversedVersionThenItemsAlsoRemovedFromOriginalVersion()
{
int maxCount = 10;
IBijectionDictionary <int, string> dict = GenerateNewTestDictionary(maxCount);
int indexToRemove = 5;
string valueToRemove = GetTestStringBasedOnIndex(indexToRemove);
Assert.AreEqual(valueToRemove, dict[indexToRemove], "GIVEN: Dictionary is not setup correctly");
Assert.AreEqual(indexToRemove, dict.Reverse[valueToRemove], "GIVEN: Dictionary is not setup correctly");
dict.Reverse.Remove(valueToRemove);
Assert.IsFalse(dict.ContainsKey(indexToRemove));
Assert.IsFalse(dict.Reverse.ContainsKey(valueToRemove));
Assert.AreEqual(dict.Count, dict.Reverse.Count);
}
private BijectionDictionaryImpl(IDictionary <TKey, TValue> dictionary, BijectionDictionaryImpl <TValue, TKey> reverseDictionary)
{
_delegate = dictionary;
_reverse = reverseDictionary;
_reverseDelegate = reverseDictionary._delegate;
}
