How do I unit-test a meteor application?

Question

What's Meteor's story with respect to unit testing?

The example videos look great for building prototypes but I haven't seen any indication of how to write tests for it.

Answer 1

My guess is that you would use velocity + jasmine-unit packages.

Velocity had been selected as the official testing framework for meteor 1.0. The announcement has been made in the last meteor devshop (june 2014).

Packages developed with velocity:

• velocity (the test runner)
• jasmine-unit (jasmine syntax)
• mocha-web-velocity (for testing collections)
• velocity-html-reporter (view the tests in the browser)

Answer 2

About the usage of tinytest, once you have watched the screencast proposed by Jeff Foster, and understood the idea, you may want to take a look at the APIS of both tinytest and test-helpers packages.

For now the only documentation available for tinytest is at the bottom of the tinytest.js file https://github.com/meteor/meteor/blob/devel/packages/tinytest/tinytest.js

The list of the helpers made available by the test-helpers package can be looked at here: https://github.com/meteor/meteor/tree/devel/packages/test-helpers. There often is some documentation inside each file.

Digging in the existing tests of meteor's packages will provide lot of examples. One way of doing this is to make a search for Tinytest. or test. in the package directory of meteor's source code

Answer 3

Take a look at documentation of Laika testing framework : http://arunoda.github.io/laika/

Screencast with introduction to Laika done by its creator - Arunoda Susiripal: http://www.discovermeteor.com/2013/06/06/testing-meteor-apps-with-laika

Answer 4

For testing meteor packages, see Tinytest.

The testing story as a whole is captured on the official Trello board.