public void GivenEmptyMapWhenTwoItemsAddedToSameKeyThenBothItemsAreInSetForThatKey()
{
IMultiValueMap <string, int> multiValueMap = new MultiValueMapImpl <string, int>();
string key = "bob";
Assert.IsFalse(multiValueMap.ContainsKey(key), string.Format(
"Given: expected test to start with empty map entry for key {0}, but map appears to contain value for that key."
, key));
const int value1 = 1;
multiValueMap.Add(key, value1);
const int value2 = 2;
multiValueMap.Add(key, value2);
Assert.AreEqual(multiValueMap[key], new int[] { value1, value2 });
}
public void GivenMap_WhenTransform_ThenResultIsOfCorrectLengthAndContainsExpectedMappings()
{
IMultiValueMap <int, string> testMap = new MultiValueMapImpl <int, string>();
testMap.Add(1, "Unity");
testMap.Add(1, "One");
testMap.Add(2, "Two");
//Intentionally add a value that'll map to the same as another value
testMap.Add(2, "Dha");
testMap.Add(3, "Three");
IMultiValueMap <int, int> transformedMap = testMap.TransformValues(s => s.Length);
Assert.AreEqual(3, transformedMap.Count, "Transformed map should be the same length as original");
Assert.IsTrue(new HashSet <int>(new int[] { 5, 3 }).SetEquals(transformedMap[1]));
Assert.IsTrue(new HashSet <int>(new int[] { 3 }).SetEquals(transformedMap[2]));
Assert.IsTrue(new HashSet <int>(new int[] { 5 }).SetEquals(transformedMap[3]));
}