Tests.when_adding_range_to_collection.then_added_elements_to_existing_list_are_added C# (CSharp) Method

        public void then_added_elements_to_existing_list_are_added()
        {
            List<string> list = new List<string> {"three"};
            list.AddRange(new[] { "one", "two" });

            Assert.AreEqual(3, list.Count);
            Assert.IsTrue(list.Contains("one"));
            Assert.IsTrue(list.Contains("two"));
            Assert.IsTrue(list.Contains("three"));
        }