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Building Integration Tests for Shopify Themes

Header Image

Welcome! If you just saw the talk at Shopify Unite on setting up integration tests on Shopify, you're in the right place. Below, we're going to help you get set up, and using this repo, see how the various pieces can come together to improve the quality and stability of your Shopify themes.

A recording of the talk has now been posted to Youtube! If you missed it at Unite, check it out here: Integration Testing for Themes (Shopify Unite Track Session 2019)

Tech Stack

This repo represents a stripped down version of our development pipeline at Pixelcabin. For simplicity, we have removed our normal compilation tasks, to focus on the Cypress component of this project. The integration tests are built around a combination of Cypress and Travis CI, however feel free to look through how this has been structured, and rework for other tools. If you implement a similar setup for another CI provider, please do PR back to this repo, so we can build up a library of solutions across multiple CI environments.

Installation Steps

Like with all Shopify theme development, you cannot have a local instance of the Shopify platform running on your machine, so all development must be done whilst keeping in sync with a 'theme' on the Shopify store you are developing for. To do this, follow the steps below:

  1. Run npm install -g grunt-cli and then npm install in the root folder of the repo.
  2. Duplicate credentials_template.json, renaming it just credentials.json
  3. In your local repo directory, run grunt zip, and upload the zip created into public/theme.zip to your store.
  4. Set up your own Private app (Shopify Admin -> Apps -> Private Apps -> Create App) and name it with your name. The only permissions the credentials need are Write permissions for the Theme Templates and Theme Assets.
  5. Grab the API key and password from your recently created app, and the theme ID for the theme you uploaded, and add these to the credentials.json file you have just created.
  6. Set the url in credentials.json to the full Shopify store url e.g. "url": "your-store.myshopify.com" (note: this must be the .myshopify.com url, not a custom domain. Do not include the protocol http://)

Using this repo

Theme

The shop folder holds the standard theme files; to keep any changes in sync, run grunt watch. All changes will now be watched for and uploaded to your theme as you modify files.

Pulling upstream

When you pull upstream to update your own theme, it is recommended to have grunt watch running, so that the changes are picked up and synced to your theme. Sometimes the watcher misses file changes when this happens. If you see problems after pulling in a lot of changes from upstream, it is recommended to trigger a manual sync of the files. With grunt watch running, run grunt exec.

Cypress

All Cypress tests are stored in the cypress folder - for more info on getting started with Cypress, check out their intro guide.

To start up the Cypress interface, run cypress open, and then select one or more tests to run.

Integrating Cypress tests with Travis

This repo has everything set up ready to run Cypress tests on Travis CI. To try this out, first create an account at travis-ci.com, and connect to your Github account or organisation.

For Travis to successfully run the various commands, it will need to have access to some key ENV variables. Some are not sensitive (such as the store url), and can be added to the .travis.yml file in the clear. Others will need to be stored securely - these can be added as encrypted values to the .travis.yml file, using the Travis CLI.

  1. In .travis.yml, set a value under env.global.shopify_url to the store you'll be running the tests against
  2. Using the Travis CLI, run travis encrypt SHOPIFY_API_KEY=[your api key] --add
  3. Using the Travis CLI, run travis encrypt SHOPIFY_API_PASSWORD=[your api password] --add

You'll also need an ngrok account (you can use the free plan) - once set up, grab your auth token from https://dashboard.ngrok.com/auth, and add to Travis: travis encrypt NGROK_AUTH_TOKEN=[your ngrok auth token] --add

Contributions

Contributions to this project are absolutely welcome. Please feel free to fork this repo, and open a PR for any improvements. In lieu of a formal styleguide, take care to maintain the existing coding style.

Core maintainers: @michaelrshannon

MIT License. Copyright 2019 Pixelcabin. pixelcabin.io

You are not granted rights or licenses to the trademarks of Pixelcabin.