public void MergingCollectionsWithNull_HasNoEffect()
{
var collection = new MetaDataCollection();
collection.TryAdd("key1", "value1");
collection.Merge(null);
Assert.AreEqual(1, collection.Count);
Assert.AreEqual("value1", collection["key1"]);
}
public void MergingCollectionsWithSharedKeys_KeysInCollectionAreUpdated()
{
var collection = new MetaDataCollection();
var collection2 = new MetaDataCollection();
collection.TryAdd("key1", "value1");
collection2.TryAdd("key1", "value2");
Assert.AreEqual("value1", collection["key1"]);
collection.Merge(collection2);
Assert.AreEqual(1, collection.Count);
Assert.AreEqual("value2", collection["key1"]);
}
public void MergingCollectionsWithNonSharedKeys_AllKeysIncluded()
{
var collection = new MetaDataCollection();
var collection2 = new MetaDataCollection();
collection.TryAdd("key1", "value1");
collection2.TryAdd("key2", "value2");
collection.Merge(collection2);
Assert.AreEqual(2, collection.Count);
Assert.AreEqual("value1", collection["key1"]);
Assert.AreEqual("value2", collection["key2"]);
Assert.IsFalse(collection2.ContainsKey("key1"));
}