public void DecodeStringTest()
{
string encodedString = Convert.ToString(TestContext.DataRow["encodedString"]);
int numberOfRails = Convert.ToInt32(TestContext.DataRow["numberOfRails"]);
string expectedResult = Convert.ToString(TestContext.DataRow["decodedString"]);
string actualResult = RailFenceCipher.DecodeString(encodedString, numberOfRails);
Assert.AreEqual(expectedResult, actualResult, "expected and actual results are not equal.\ndecodedString = " + encodedString + "\nnumberOfRails = " + numberOfRails);
}