public void MapField_Add_adds_items_to_map(MapField <string, string> map, IReadOnlyDictionary <string, string> items)
{
ProtobufCollectionExtensions.Add(map, items);
Assert.That(map, Is.SupersetOf(items));
}
public void MapField_Add_does_not_throw_if_items_is_null(MapField <string, string> map)
{
Assert.That(() => ProtobufCollectionExtensions.Add(map, null), Throws.Nothing);
}