public void op_TryAdd_string_string_whenTrue()
        {
            var obj = new KeyStringDictionary();

            Assert.True(obj.TryAdd("key", "value"));
            Assert.Equal(1, obj.Count);
        }
        public void op_TryAdd_string_string_whenFalse()
        {
            var obj = new KeyStringDictionary
            {
                new KeyStringPair("key", "value")
            };

            Assert.False(obj.TryAdd("key", "value"));
            Assert.Equal(1, obj.Count);
        }