public void Copy()
{
// Arrange
var collection = new System.Collections.Specialized.NameValueCollection
{
{ "A", "1" },
{ "B", "2" },
{ "C", "3" }
};
// Act
var copiedCollection = collection.Copy();
// Assert
Assert.AreEqual(3, copiedCollection.Count);
Assert.AreEqual("1", copiedCollection[0]);
Assert.AreEqual("2", copiedCollection[1]);
Assert.AreEqual("3", copiedCollection[2]);
Assert.AreEqual("A", copiedCollection.Keys[0]);
Assert.AreEqual("B", copiedCollection.Keys[1]);
Assert.AreEqual("C", copiedCollection.Keys[2]);
}