public void RemoveFromDictionary_Args1_EvensRemoved()
{
Dictionary <object, int> dictionary = new Dictionary <object, int>();
object object1 = new object();
object object2 = new object();
object object3 = new object();
object object4 = new object();
dictionary.Add(object1, 1);
dictionary.Add(object2, 2);
dictionary.Add(object3, 3);
dictionary.Add(object4, 4);
object expectedArgument = new object();
Func <KeyValuePair <object, int>, object, bool> removeAction = (
KeyValuePair <object, int> entry,
object arg
) =>
{
Assert.Equal(expectedArgument, arg);
// remove even values
return((entry.Value % 2) == 0);
};
dictionary.RemoveFromDictionary(removeAction, expectedArgument);
Assert.Equal(2, dictionary.Count);
Assert.True(dictionary.ContainsKey(object1));
Assert.False(dictionary.ContainsKey(object2));
Assert.True(dictionary.ContainsKey(object3));
Assert.False(dictionary.ContainsKey(object4));
}