private IBijectionDictionary <int, string> GenerateNewTestDictionary(int maxCount)
{
IBijectionDictionary <int, string> dict = new BijectionDictionaryImpl <int, string>();
for (int i = 0; i < maxCount; i++)
{
dict.Add(i, GetTestStringBasedOnIndex(i));
}
return(dict);
}
public void TestGivenExistingDictionaryWhenWrappedInTwoWayDictionaryThenReverseVersionIsPopulated()
{
int maxCount = 10;
IDictionary <int, string> dict = new Dictionary <int, string>();
for (int i = 0; i < maxCount; i++)
{
dict.Add(i, GetTestStringBasedOnIndex(i));
}
Assert.AreEqual(maxCount, dict.Count, "GIVEN: Source dictionary has incorrect length");
IBijectionDictionary <int, string> twoWayDict = new BijectionDictionaryImpl <int, string>(dict);
Assert.AreEqual(maxCount, twoWayDict.Count, "Two way dictionary not populated correctly");
Assert.AreEqual(maxCount, twoWayDict.Reverse.Count, "Reverse dictionary not populated correctly");
AssertOriginalAndReversedVersionsMatchExactly(twoWayDict);
}
public void TestGivenNonUniqueKeyValuePairsWhenAddedToTwoWayDictionaryThenExceptionsThrownForDuplicates()
{
IBijectionDictionary <int, string> dict = new BijectionDictionaryImpl <int, string>();
dict.Add(0, GetTestStringBasedOnIndex(0));
int countBefore = dict.Count;
// Exception thrown for duplicate keys
Assert.Throws <ArgumentException>(() => dict.Add(0, GetTestStringBasedOnIndex(0)));
Assert.AreEqual(countBefore, dict.Count, "Item added to dictionary after exception thrown");
Assert.AreEqual(countBefore, dict.Reverse.Count, "Item added to reversed dictionary after exception thrown");
// Exception thrown for duplicate values for unique keys
Assert.Throws <ArgumentException>(() => dict.Add(1, GetTestStringBasedOnIndex(0)));
Assert.AreEqual(countBefore, dict.Count, "Item added to dictionary after exception thrown");
Assert.AreEqual(countBefore, dict.Reverse.Count, "Item added to reversed dictionary after exception thrown");
// Add succeeds with unique key + value
dict.Add(1, GetTestStringBasedOnIndex(1));
}