public void ValidateBrackets_GivenSetOfBalancedBrackets_ShouldReturnOK(string input, string expected)
        {
            //Arrange
            var sut = new BalancedBrackets();

            //Act
            var actual = sut.ValidateBrackets(input);

            //Assert
            Assert.AreEqual(expected, actual);
        }
        public void ValidateBrackets_GivenInputWithEmptyOrNullOrWhiteSpace_ShouldReturnOK(string input)
        {
            //Arrange
            var sut = new BalancedBrackets();

            //Act
            var actual = sut.ValidateBrackets(input);

            //Assert
            var expected = "OK";

            Assert.AreEqual(expected, actual);
        }