Scripting with Visual Studio Code

This topic describes how to build and run DevWeb scripts using the Visual Studio Code (VS Code) editor.

Create DevWeb scripts in VS Code

When creating a DevWeb script using VS Code, you can use the VsCodeTemplate as a basis for your script.

Alternatively, if you create a new DevWeb script from your own application, we recommend that you copy some of the files from the template script to your new script. This enables you to utilize extra functionality for the script in the VS Code environment.

Note: For Visual Studio Code 1.46.0 and later, an experimental debugger might be enabled by default. This debugger is not supported with DevWeb scripts.

Workaround: To debug, in the VS Code settings set ‘debug.javascript.usePreview’ to false.

To set up the VS Code environment:

  1. Set up your script, using one of the following methods:

    • Copy the VsCodeTemplate folder from <DevWeb root>\examples\ to a location on the same machine as DevWeb, and rename the copied folder.

      Or

    • Open the <DevWeb root folder>\examples\VsCodeTemplate folder, and copy the following files and folder to an existing DevWeb script folder:

      What to copy: Purpose:
      .vscode folder Enables you to view predefined tasks for the DevWeb script in VS Code.
      DevWebSdk.d.ts and tsconfig.json files Enables JavaScript SDK code completion for the DevWeb scripts in VS Code.
  2. In VS Code, open the script: Select File > Open Folder and open the relevant folder. Edit the script as required.
  3. Select Terminal > Run Tasks (in older versions of VS Code, select Tasks > Run Tasks), then select one of the options to record or generate the DevWeb script.

Note: The tasks use the environment variable DEVWEB_PATH, which should point to the DevWeb installation path. The environment variable is created automatically when DevWeb is installed with LoadRunner Professional or LoadRunner Enterprise.

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Run DevWeb scripts from VS Code

You can run your DevWeb script for up to 50 Vusers, using the DevWeb plug-in.

To run a script:

  1. Select Terminal > Run Tasks (in older versions of VS Code, select Tasks > Run Tasks).
  2. Select one of the run options.

  3. If any errors are discovered during the run, press CTRL+left mouse button to jump to the line where the error occurred.

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VS Code tasks

The VsCodeTemplate includes the following tasks for LoadRunner Developer and DevWeb scripts (available by selecting Terminal > Run Tasks):

Task: Purpose: For details, see:
Generate script Generate a script from a HAR file DevWeb Offline Script Generator tool
Record script Run the DevWeb Proxy Recorder to record a HAR file DevWeb Proxy Recorder
Run single Vuser Run the script in single mode with 1 Vuser Run scripts locally
Run load Run the script in load mode with up to 50 Vusers
Generate script with Swagger API functions Generate a script in Swagger mode API testing with DevWeb
Generate Swagger API functions Generate a swaggerApi.js file
Get distribution list from LoadRunner Cloud Display a list of cloud locations available for the test on LRC Run tests on LRC from your IDE
Get load generator list from LoadRunner Cloud Display a list of OPLG machines available for the test on LRC
Run test on LoadRunner Cloud Run load test on LoadRunner Cloud
Get test run results from LoadRunner Cloud Get results for a load test on LRC
Run test on LoadRunner Enterprise Run load test on LoadRunner Enterprise Run tests on LRE from your IDE
Get test run results from LoadRunner Enterprise Get results for a load test on LRE

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See also: