public void TryGetValue_NullKey_ThrowsArgumentNullException()
{
var collection = new StringKeyedCollection <string>();
string item = "item";
AssertExtensions.Throws <ArgumentNullException>("key", () => collection.TryGetValue(null, out item));
Assert.Equal("item", item);
}
public void TryGetValue_Invoke_ReturnsExpected(IEqualityComparer <string> comparer, string key, bool expected, string expectedItem)
{
var collection = new StringKeyedCollection <string>(comparer, 3);
collection.GetKeyForItemHandler = i => i + "_key";
// Without dictionary.
collection.InsertItem(0, "first");
Assert.Equal(expected, collection.TryGetValue(key, out string item));
Assert.Equal(expectedItem, item);
// With dictionary.
collection.InsertItem(0, "second");
collection.InsertItem(0, "third");
collection.InsertItem(0, "fourth");
Assert.Equal(expected, collection.TryGetValue(key, out item));
Assert.Equal(expectedItem, item);
}
public void TryGetValue_NullKeyForItemResult_Success(int dictionaryCreationThreshold, bool expected, int expectedItem)
{
var collection = new StringKeyedCollection <int>(null, dictionaryCreationThreshold);
collection.GetKeyForItemHandler = i => i.ToString();
collection.Add(1);
collection.Add(2);
collection.Add(3);
collection.Add(4);
// Don't get even numbers.
collection.GetKeyForItemHandler = i => i % 2 == 0 ? null : i.ToString();
// Get null key.
Assert.Equal(expected, collection.TryGetValue("2", out int item));
Assert.Equal(expectedItem, item);
// Get non null key.
Assert.True(collection.TryGetValue("1", out item));
Assert.Equal(1, item);
}
public void TryGetValue_DifferentKeyForItemResult_Success(int dictionaryCreationThreshold, bool expected, int expectedItem)
{
var collection = new StringKeyedCollection <int>(null, dictionaryCreationThreshold);
collection.GetKeyForItemHandler = i => i.ToString();
collection.Add(1);
collection.Add(2);
collection.Add(3);
collection.Add(4);
collection.GetKeyForItemHandler = i => (i * 2).ToString();
Assert.Equal(expected, collection.TryGetValue("6", out int item));
Assert.Equal(expectedItem, item);
}
private void PushOperations(XElement element)
{
foreach (Operation operation in CreateOperationsFromElement(element))
{
_propertyOperations = _propertyOperations ?? new StringKeyedCollection <PropertyOperationCollection>();
if (!_propertyOperations.TryGetValue(operation.PropertyName, out PropertyOperationCollection propertyOperations))
{
propertyOperations = new PropertyOperationCollection(operation.PropertyDefinition);
_propertyOperations.Add(propertyOperations);
}
propertyOperations.Add(operation);
}
}