Six Foot Coder: Running Jasmine Tests Using Karma and Azure Pipelines

In order to run Jasmine tests, the runner Karma must be used. Karma requires Chrome. So in Azure we will be installing all of that in a container in order to run the tests. We will also be collecting coverage. It is important that a full Linux distribution be used like Ubuntu. We will be using the Azure pipeline wizard.

Install Jasmine

This will add Jasmine to your package.json

npm install --save-dev jasmine-core @types/jasmine @types/jasminewd2

Install Karma

This will add Karma to your package.json

npm install --save-dev karma karma-chrome-launcher karma-coverage karma-jasmine 

karma-jasmine-html-reporter

Add a karma.conf.js to your project

Generating detailed code coverage reports can help you identify untested parts of your codebase. Add the coverageReporter to your karma.config.js

// Karma configuration file, see link for more information

// https://karma-runner.github.io/1.0/config/configuration-file.html

module.exports = function (config) {

  config.set({

    basePath: "",

    frameworks: ["jasmine", "@angular-devkit/build-angular"],

    plugins: [

      require("karma-jasmine"),

      require("karma-chrome-launcher"),

      require("karma-jasmine-html-reporter"),

      require("karma-coverage"),

      require("@angular-devkit/build-angular/plugins/karma"),

],

    client: {

      jasmine: {

        // you can add configuration options for Jasmine here

        // the possible options are listed at https://jasmine.github.io/api/edge/Configuration.html

        // for example, you can disable the random execution with `random: false`

        // or set a specific seed with `seed: 4321`

},

      clearContext: false, // leave Jasmine Spec Runner output visible in browser

},

    jasmineHtmlReporter: {

      suppressAll: true, // removes the duplicated traces

},

    coverageReporter: {

      dir: require("path").join(__dirname, "./coverage/angularapp"),

      subdir: ".",

      reporters: [{ type: "html" }, { type: "text-summary" }],

},

    reporters: ["progress", "kjhtml", "coverage"],

    port: 9876,

    colors: true,

    logLevel: config.LOG_INFO,

    autoWatch: true,

    browsers: ["Chrome", "ChromeHeadless"],

    singleRun: false,

    restartOnFileChange: true,

});

};

Add test and test-headless to your package.json

  "scripts": {
    "test": "ng test",
    "test-headless": "ng test --code-coverage --watch=false --browsers=ChromeHeadless",
  },

In Azure Define the Pipeline

Specify the Source Repository

Using Bash to Install Chrome

Here are the commands

sudo apt-get update
sudo apt-get install -y wget
wget https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb
sudo apt-get install -y ./google-chrome-stable_current_amd64.deb
google-chrome --version