public void Remove_ValidKeyWithoutDictionary_Success(IEqualityComparer <string> comparer, string key, bool expected, string[] expectedItems)
{
var collection = new StringKeyedCollection <string>(comparer, 3);
collection.GetKeyForItemHandler = i => i + "_key";
collection.Add("first");
Assert.Null(collection.Dictionary);
Assert.Equal(expected, collection.Remove(key));
Assert.Equal(expectedItems, collection.Items.Cast <string>());
Assert.Null(collection.Dictionary);
}
public void Remove_NullKeyForItemResult_Success()
{
var collection = new StringKeyedCollection <int>(null, 3);
collection.GetKeyForItemHandler = item => item.ToString();
collection.Add(1);
collection.Add(2);
collection.Add(3);
collection.Add(4);
// Don't add/remove even numbers.
collection.GetKeyForItemHandler = item => item % 2 == 0 ? null : item.ToString();
// Remove null key.
Assert.True(collection.Remove("2"));
Assert.Equal(new int[] { 1, 3, 4 }, collection.Items.Cast <int>());
Assert.Equal(new Dictionary <string, int>
{
{ "1", 1 },
{ "2", 2 },
{ "3", 3 },
{ "4", 4 }
}, collection.Dictionary
);
// Remove non-null key.
Assert.True(collection.Remove("1"));
Assert.Equal(new int[] { 3, 4 }, collection.Items.Cast <int>());
Assert.Equal(new Dictionary <string, int>
{
{ "2", 2 },
{ "3", 3 },
{ "4", 4 }
}, collection.Dictionary
);
}
public void Remove_Invoke_ResetsCurrentThresholdCount()
{
var collection = new StringKeyedCollection <string>(null, 3);
collection.GetKeyForItemHandler = item => item + "_key";
collection.Add("first");
collection.Remove("first_key");
// Add more items - make sure the current count has been reset.
collection.Add("first");
Assert.Null(collection.Dictionary);
collection.Add("second");
Assert.Null(collection.Dictionary);
collection.Add("third");
Assert.Null(collection.Dictionary);
collection.Add("fourth");
Assert.NotEmpty(collection.Dictionary);
}
public void Remove_NullKey_ThrowsArgumentNullException()
{
var collection = new StringKeyedCollection <string>();
AssertExtensions.Throws <ArgumentNullException>("key", () => collection.Remove(null));
}