What is karma

• Karma is a tool which lets us spawn browsers and run Jasmine tests inside of them all from the command line.

Running Jasmine tests using karma

• Run these commands:
• In GitBash:
  • This: npm install
  • Then this: node_modules/karma/bin/karma start karma.conf.js –single-run
• In Windows command prompt:
  • Install the karma command-line interface like this:
    • This: npm install -g karma-cli
  • Run the command
    • This: node_modules\.bin\karma start karma.conf.js –single-run

Troubleshooting

• If any problems…
  • npm install karma –save
    • Puts it in node-modules and updates package.json
  • You will also need the command-line interface
    • Run this: npm install -g karma-cli
  • …and any other dependent packages
    • Run this: npm install
  • To run tests: get yourself into the karma tests folder
    • …and run “karma start”
    • This will run all your tests and then leave karma running, to automatically pick up any file changes and rerun tests on demand.

Leaving the test runner in the background

• You can just go to dts-frontend and run make jstest
  • This runs tests but doesn’t leave the test runner going
• To have the test runner running constantly in the background: make jstestrunner
  • This means that every time you make a change and save the js, the tests will be automatically rerun.
  • Actually all this does is make sure the right bits are installed, then move you to your karmaTests folder and run karma start
  • It also specifies to use karma.conf.js, but I’m pretty sure that if you just navigate to karmaTests and run karma start, it will use that conf.js file anyway.