public static void KeyedLookup_KeyExtractor()
{
var items = new[]
{
new KeyValuePair <int, AttributeTargets>(10, AttributeTargets.Class),
new KeyValuePair <int, AttributeTargets>(20, AttributeTargets.Constructor),
new KeyValuePair <int, AttributeTargets>(30, AttributeTargets.Delegate)
};
var lookup = KeyedCollectionFactory.Create(items, t => t.Key / 10);
Assert.Throws <KeyNotFoundException>(() => lookup[4]);
Assert.Equal(AttributeTargets.Class, lookup[1].Value);
Assert.Equal(AttributeTargets.Constructor, lookup[2].Value);
Assert.Equal(AttributeTargets.Delegate, lookup[3].Value);
}
public static void KeyedLookup_KeyExtractor_Ordinal()
{
var items = new[]
{
new KeyValuePair <string, AttributeTargets>("a", AttributeTargets.Class),
new KeyValuePair <string, AttributeTargets>("b", AttributeTargets.Constructor),
new KeyValuePair <string, AttributeTargets>("c", AttributeTargets.Delegate)
};
var lookup = KeyedCollectionFactory.Create(items, t => t.Key, StringComparer.Ordinal);
Assert.Throws <KeyNotFoundException>(() => lookup["d"]);
Assert.Equal(AttributeTargets.Class, lookup["a"].Value);
Assert.Throws <KeyNotFoundException>(() => lookup["A"]);
Assert.Equal(AttributeTargets.Constructor, lookup["b"].Value);
Assert.Throws <KeyNotFoundException>(() => lookup["B"]);
Assert.Equal(AttributeTargets.Delegate, lookup["c"].Value);
Assert.Throws <KeyNotFoundException>(() => lookup["C"]);
}
