Ch01Code.txt

// Chapter 1 - API Testing
// Example Program: ApiTest

using System;
using System.IO;
using MathLib; // houses methods under test

namespace TestAutomation
{
  class Class1
  {
    [STAThread]
    static void Main(string[] args)
    {
      try
      {
        FileStream ifs = new FileStream("..\\..\\TestCases.txt",
                                        FileMode.Open);
        StreamReader sr = new StreamReader(ifs);
        string stamp = DateTime.Now.ToString("s");
        stamp = stamp.Replace(":", "-");
        FileStream ofs = new FileStream("..\\..\\TestResults" +
                         stamp + ".txt", FileMode.CreateNew);
        StreamWriter sw = new StreamWriter(ofs);

        string line, caseID, method;
        string[] tokens, tempInput;
        string expected;
        double actual = 0.0;
        int numPass = 0, numFail = 0;

        Console.WriteLine("\nCaseID Result Method   Details");
        Console.WriteLine("================================\n");

        while ((line = sr.ReadLine()) != null)
        {
          tokens = line.Split(':');
          caseID = tokens[0];
          method = tokens[1];
          tempInput = tokens[2].Split(' ');
          expected = tokens[3];

          int[] input = new int[tempInput.Length];
          for (int i = 0; i < input.Length; ++i)
            input[i] = int.Parse(tempInput[i]);

          if (method == "ArithmeticMean")
          {
            actual = MathLib.Methods.ArithmeticMean(input);
            if (actual.ToString("F4") == expected)
            {
              Console.WriteLine(caseID + "   Pass   " + method +
                       " actual = " + actual.ToString("F4"));
              sw.WriteLine(caseID + "   Pass   " + method +
                       " actual = " + actual.ToString("F4"));
              ++numPass;
            }
            else
            {
              Console.WriteLine(caseID + "  *FAIL*  " + method +
                       " actual = " + actual.ToString("F4") +
                       " expected = " + expected);
              sw.WriteLine(caseID + "  *FAIL*  " + method +
                       " actual = " + actual.ToString("F4") +
                       " expected = " + expected);
              ++numFail;
            }
          }
          else if (method == "GeometricMean ")
          {
            MathLib.Methods m = new MathLib.Methods();
            actual = m.GeometricMean(input);
            if (actual.ToString("F4") == expected)
            {
              Console.WriteLine(caseID + "   Pass   " + method +
                       " actual = " + actual.ToString("F4"));
              sw.WriteLine(caseID + "   Pass   " + method +
                       " actual = " + actual.ToString("F4"));
              ++numPass;
            }
            else
            {
              Console.WriteLine(caseID + "  *FAIL*  " + method +
                       " actual = " + actual.ToString("F4") +
                       " expected = " + expected);
              sw.WriteLine(caseID + "  *FAIL*  " + method +
                       " actual = " + actual.ToString("F4") +
                       " expected = " + expected);
              ++numFail;
            }
          }
          else
          {
            Console.WriteLine(caseID + "          " + method +
                     " Not yet implemented");
            sw.WriteLine(caseID + "          " + method +
                     " Not yet implemented");
          }
        } // test case loop

        Console.WriteLine("\n========= end test run ==========");
        Console.WriteLine("\nPass = " + numPass +
                          " Fail = " + numFail);
        sw.WriteLine(Environment.NewLine + "Pass = " + numPass +
                          " Fail = " + numFail);

        sr.Close();
        ifs.Close();
        sw.Close();
        ofs.Close();
      }
      catch(Exception ex)
      {
        Console.WriteLine("Fatal error: " + ex.Message);
      }
      Console.ReadLine();
    } // Main()
  } // class Class1
} // ns TestAutomation