Calling Coded WebTest inside a Coded WebTest Using VSTS 2008

       Typically Web Tests are designed for handling a wide variety of WebTest scenario. By Using Data Binding, Extraction Rules, Context Parameters we can control our WebTest. But sometimes more control is needed. Coded WebTest Provide a most Control and extensibility because we can code using C# or VB.Net.

      In WebTest there is no direct approach to loop our request. If a WebTest must loop in order to issue several requests that are dynamically determined during the test, we can use coded Web tests,

Here I am going to explain a small example of it.


       Let assume there a small web application, in that there is login screen, home page and Product Page. Once user provides correct Username and Password in the login screen, he will be redirected to Home Page from there he can go to Product Page. In product page user can enter all the products name he/she wants to buy and then he/she will be clicking on logout.

Below are the two Lists one for Users and one for Products

Users                                    Products

1. Surya                               1. Mobile

2. Madhu                             2. Computer

                                            3. Laptop

                                            4. TV

                                            5. DSLR Camera

User will login using username “Surya” and in product page he will enter all the products available in the product list and then he will logout. Same sequence will be followed for user “Madhu”.

Expected Result

ID       UserID        Product

1                  1        Mobile

2                  1        Computer

3                  1        Laptop

4                  1        TV

5                  1        DSLR Camera

6                  2        Mobile

7                  2        Computer

8                  2        Laptop

9                  2        TV

10                2        DSLR Camera

Record Parent WebTest

1. Start Recording

2. Open Login Page

3. Enter UserName and Password

4. Click Login

5. Click on Product link to navigate to Product Page

6. Click logout

7. Stop Recording

Record Child WebTest

1. Start Recording

2. Open Product page

3. Enter a Product Name

4. Click on Add

5. Stop Recoding

Bind username, password and Product textbox to the datasource. Follow below link for more details on data binding.

Generate the Code of Both the WebTests -> Right Click on WebTest -> Click Generate Code.

Right Click on the Project and Build it


Open ParentCoded Class

Add IncludeCodedWebTest attribute to ParentCoded Class.

[IncludeCodedWebTest("MSCoderTestProject.ChildCoded", "MSCoderTestProject.dll")]

Change the DataBindingAccessMethod from Sequential to Unique.

Call Child WebTest in ParentWebTest before Logout request.


WebTest myChildTest = IncludeWebTest(new MSCoderTestProject.ChildCoded(), false);
foreach (WebTestRequest r in myChildTest) { yield return r; }

Open ChildCoded Class

Insert a loop which will execute 5 times.

Move the DataTable Cursor to Next row

int maxCount = 5;                

for (int index = 1; index <= maxCount; index++)
//Code for making Request

if (index != maxCount)
this.MoveDataTableCursor("ProductDataSource", "Products#csv");

Run a Coded WebTest

Click Test Menu

Click Windows -> Click Test List Editor


Select ParentCoded Test and Right Click on it

Click on Run Checked Tests.


Result will be displayed in the Test Result window.

Double Click on the result.

Here we can see all the request made by the ChildCodedTest.


This is the final view of the table where data has been saved by the test.


Link to Download the Code


10 thoughts on “Calling Coded WebTest inside a Coded WebTest Using VSTS 2008

  1. Thank you so much for sharing all this information in this much detailed & precise way. It is really helpful.
    I have a query how to data can be saved by the test from coded webtest, so that data can be further used. This is related to your last screencapture of thsi blog. Please give me quick reply.


  2. Hi,
    By using CodedWebTest I am making multiple Reqests to the server with the help of a for loop. Data is getting saved by the web applioncation only. If you want to store some data for some reason into the database you can write the logic in the codedWebTest itself, Since we are using C# so easily we can store the data.
    if you want to access a dynamic value of a particular field in the CodedWebTest you can write like this


  3. I add validation rule for age field on search page, binded age field to upload dynamic data on rum time, convert it into coded webtest, chnged validation rule for expecting value for each iteration.. now challeneg is hw to compare actual n expected result N display this result

    • Hi,

      If actual result is not matching with the expected result it means test is failing. If test is failing you can check status code of last response by using this code.

      if (LastResponse.StatusCode == System.Net.HttpStatusCode.OK)


      All status codes for your reference

      Continue = 100
      SwitchingProtocols = 101
      OK = 200
      Created = 201
      Accepted = 202
      NonAuthoritativeInformation = 203
      NoContent = 204
      ResetContent = 205
      PartialContent = 206
      MultipleChoices = 300
      Ambiguous = 300
      MovedPermanently = 301
      Moved = 301
      Found = 302
      Redirect = 302
      SeeOther = 303
      RedirectMethod = 303
      NotModified = 304
      UseProxy = 305
      Unused = 306
      TemporaryRedirect = 307
      RedirectKeepVerb = 307
      BadRequest = 400
      Unauthorized = 401
      PaymentRequired = 402
      Forbidden = 403
      NotFound = 404
      MethodNotAllowed = 405
      NotAcceptable = 406
      ProxyAuthenticationRequired = 407
      RequestTimeout = 408
      Conflict = 409
      Gone = 410
      LengthRequired = 411
      PreconditionFailed = 412
      RequestEntityTooLarge = 413
      RequestUriTooLong = 414
      UnsupportedMediaType = 415
      RequestedRangeNotSatisfiable = 416
      ExpectationFailed = 417
      InternalServerError = 500
      NotImplemented = 501
      BadGateway = 502
      ServiceUnavailable = 503
      GatewayTimeout = 504
      HttpVersionNotSupported = 505

      or else you can create a custom validation rule to compare the actual value with expected value.

      Surya Gahlot

  4. Hi, I want to know how to handle Java Script in VSTS 2008. My testing require to use validations same as java script in vsts so how we can do this.

    Please help.

    • As we know that Javascript is a part of a page and it executes at clientside, so there will not be any request to the server. If webrequest is not involvoed in it then nothing can be done by WebTest(VSTS 2008)) because WebTests work at HTTP level. If you are doing a postback using javascript and you are not able to record in the webtest then you can take the help of Fiddler tool there you can see all the requests made to the server.
      You can validate your inputs in codedWebTest by simulating javascript.

      string age = this.Context[“Age”].ToString();

      age = 18;

      body.FormPostParameters.Add(“age”, age);
      body.FormPostParameters.Add(“submit”, “Submit”);
      request5.Body = body;
      yield return request5;

      Surya Gahlot

  5. Hi Surya, hru?
    I have completed automation testing with VSTS of my module. Now the challenge is how to make .exe kind of file, for deliverable so any tester can run this automation script, who is not having VSTS & other required software installed on his system.
    Please do some R&D and help me, as we’ll have to deliver it as soon as possible.
    Thanks in advance.
    Best of luck 🙂

  6. Hi Surya, hru? hope u r doin fine…

    I need your help.
    Actually we have completed first phase of automation of our module. Now the challenge is to make .exe kind of file of our code, to handle it as deliverable. So it can be run on any testers machine on which vsts & other required software are not installed.
    Please do some R&D and reply.
    Thanks in advance.


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