public void ReadOnlyCollection_AttemptingToModifyCollection_Throws()
{
var nameValueCollection = new ReadOnlyNameValueCollection();
Assert.Throws<NotSupportedException>(() => nameValueCollection.Add("name", "value"));
Assert.Throws<NotSupportedException>(() => nameValueCollection.Set("name", "value"));
Assert.Throws<NotSupportedException>(() => nameValueCollection.Remove("name"));
Assert.Throws<NotSupportedException>(() => nameValueCollection.Clear());
}