private int[] GetExpectedValues()
        {
            var testInput  = dataPreparator.GetTestInput();
            var testOutput = dataPreparator.GetTestOutput();

            var expected = new int[testOutput.Length];

            for (var i = 0; i < testOutput.Length; i++)
            {
                expected[i] = Convert.ToInt32(testOutput[i] - 1);
            }
            return(expected);
        }