public void ShouldReturnValuesWhereKeyMatchesPredicate()
{
ListDictionary <string, int> dict = new ListDictionary <string, int>();
dict.Add("a", 1);
dict.Add("a", 1);
dict.Add("a", 2);
dict.Add("bar", 3);
dict.Add("bar", 5);
dict.Add("bar", 8);
dict.Add("c", 13);
dict.Add("c", 21);
dict.Add("dar", 34);
// We can't assume that the keys come out in sorted order,
// so we'll keep a set of the expected numbers instead, and
// pick them out.
Dictionary <int, int> expected = new Dictionary <int, int>();
expected[3] = 0;
expected[5] = 0;
expected[8] = 0;
expected[34] = 0;
foreach (int value in dict.FindAllValuesByKey(
delegate(string key) { return(key.Length == 3); }))
{
Assert.IsTrue(expected.ContainsKey(value));
expected.Remove(value);
}
Assert.AreEqual(0, expected.Count);
}
public void CanGetFilteredValuesByKeys()
{
list.Add("foo", new object());
list.Add("bar", new object());
list.Add("baz", new object());
IEnumerable <object> filtered = list.FindAllValuesByKey(delegate(string key)
{
return(key.StartsWith("b"));
});
int count = 0;
foreach (object obj in filtered)
{
count++;
}
Assert.AreEqual(2, count);
}