.NET API Testing

Installed .NET 4.0 and C# VS 2010 Express Edition. Tried the below example for API testing.

• Have not used any design patterns in this case#
• Simple API Testing
• Methods for Reading Input
• Executing Results
• Reporting Results (Create File with time stamp)

Disadvantages of not using a Framework ex-TestNG / Nunit

• Trying to write methods for everything (Input parsing, logging, reporting, Running Tests)

Anyways this is a good learning exercise for me

Below is input test data XML format

  <?xml version="1.0" encoding="utf-8" ?>

     - <TestData>

- <    TestCase>

      <Input1>1</Input1>

      <Input2>2</Input2>

      <Expected>2</Expected>

  </TestCase>

   - <TestCase>

     <Input1>10</Input1>

     <Input2>2</Input2>

     <Expected>20</Expected>

  </TestCase>

   - <TestCase>

     <Input1>3</Input1>

     <Input2>2</Input2>

     <Expected>6</Expected>

  </TestCase>

  </TestData>

Below is example code I tried.

using System;

using System.IO;

using System.Xml;

using System.Collections.Generic;

namespace TestSuite

{

    class TestDesign

    {

        //Read input for Test cases from the XML

        public void AssignTestData()

        {

            int TestData1=0;

            int TestData2=0;

            int ExpectedResult=0;

            try

            {

                XmlDocument doc = new XmlDocument();

                doc.Load("D:\\TestData.xml");

                XmlNodeList TestDataList = doc.GetElementsByTagName("TestCase");

                foreach (XmlNode node in TestDataList)

                {

                 XmlElement TestData = (XmlElement) node;

                 TestData1 = Convert.ToInt32(TestData.GetElementsByTagName("Input1")[0].InnerText);

                 TestData2 = Convert.ToInt32(TestData.GetElementsByTagName("Input2")[0].InnerText);

                 ExpectedResult = Convert.ToInt32(TestData.GetElementsByTagName("Expected")[0].InnerText);

                 Console.WriteLine("Test Data is " + TestData1 + "," + TestData2 + " Expected is " + ExpectedResult + "\n");

                 //Run the tests after getting input test data

                 RunTests(TestData1, TestData2, ExpectedResult);

                }

            }

            catch (Exception e)

            {

                Console.WriteLine("The file could not be read:" +"\n");

                Console.WriteLine(e.Message);

                Console.ReadKey();

            }

        }

        public void RunTests(int TestInput1, int TestInput2, int Expected)

        {

            try

            {

                int ActualResult;

                ActualResult = SumofTwoNumbers(TestInput1, TestInput2);

                if (ActualResult == Expected)

                {

                    Console.WriteLine("Test Case Successful for Data: " + TestInput2 + "," + TestInput2

                         + " Expected Result " + Expected +"\n");

                }

                else

                {

                    Console.WriteLine("Test Case Failed for Data: " + TestInput2 + "," + TestInput2

     + " Expected Result" + Expected +" Actual Result " + ActualResult +"\n");

                }

            }

            catch (Exception e)

            {

                Console.WriteLine(e.Message);

                Console.ReadKey();

            }

        }

       

        public void ReportResults()

        {

            //Email Results

        }

       

        public int SumofTwoNumbers(int InputA, int InputB)

        {

            return (InputA * InputB);

        }

    }

    class Program

    {

        public static void Main()

        {

            TestDesign TestRun1 = new TestDesign();

            TestRun1.AssignTestData();

            Console.ReadKey();

//          TestRun1.ReportResults();

        }

    }

}

Results reporting function is not implemented, so it is commented code :). I would try the same example using Nunit in coming days.

More Reads
C# XmlReader Program
Top 10 Mistakes in Unit Testing
Reading XML Files Directly - Page 1
NUnit "Quick and Dirty" Tutorial
Unit Testing with NUnit 
NUnit Best Practices 
Nunit Blogs
Read / Write XML in Memory Stream
API Testing framework
Happy Reading!!