Testing Azure Functions

This repository includes examples demonstrating how to run tests against an HTTP-triggered and timer-triggered function in both C# and JavaScript. The C# implementation uses xUnit in Visual Studio and the JavaScript examples use Jest for automated tests and works best with Visual Studio Code.

There are two functions with associated tests available for both environments, these examples include:

  • HTTP-triggered function: The example demonstrates how to pass in query string parameters to the function. The C# example uses xUnit's Theory feature to pass in a data set to the HTTP triggered function.
  • Timer-triggered function: A non-HTTP triggered function (in the form of a timer-triggered function) is included to demonstrate how to test a function that is not callable via a standard HTTP request.

To read more about the samples featured in this repo, read Strategies for testing your code in Azure Functions

C# in Visual Studio

To run the C# tests open the file csharp-visualstudio\FunctionsTesting.sln in Visual Studio. After you have restored all the dependencies, build the solution and click Run All from the Test Explorer. The output from the tests should look something like the following:

Visual Studio Tests

To debug your tests, set a breakpoint in your code navigate to the Test Explorer. Then, click Run... > Debug Last Run.

JavaScript in VS Code

Open the folder javascript-vscode in VS Code. Run npm install to install the dependencies and then run npm test to run the tests. The output from the tests should look something like the following:

VS Code Tests

To debug you tests, set a break point in your code and add the following configuration to launch.json before starting a debug session.

  "configurations": [
      "type": "node",
      "request": "launch",
      "name": "Debug Tests",
      "program": "${workspaceRoot}\\node_modules\\jest\\bin\\jest.js",
      "args": [
      "internalConsoleOptions": "openOnSessionStart"