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purple-a11y-tests

Cypress functional tests for Purple A11y to verify the correctness of Purple A11y CLI and integration module.

Run Locally

Step 1:

  • Edit the /etc/hosts file by running sudo nano /etc/hosts in terminal.
  • At the end of the file, add these new lines with the following format:
127.0.0.1    main.purplea11y.local
127.0.0.1    diffHostname.purplea11y.local

This is needed to test the strategy flag in Purple A11y.

Step 2:

  • Install dependencies then run the host_websites_and_run_cypress.sh script, which hosts the functional test website on a python server then runs the cypress tests.
    Note: The host_websites_and_run_cypress.sh script accepts an argument that specifies the package of Purple A11y you want to test. To test your specific branch of Purple A11y, just change "master" with your preferred branch. (see below)
npm install
shell_scripts/host_websites_and_run_cypress.sh git+https://github.com/GovTechSG/purple-a11y.git#master

  • After running the shell_scripts/host_websites_and_run_cypress.sh script, find generated cypress report under ./cypress/reports/index.html from project root directory.

  • If you make code changes in the src folder, ensure you do npm run build to compile the typescript into the dist folder.

Run via Docker Container

Prerequisites:

Ensure that you have these installed:

  • Colima on MacOS, or Docker Engine on Linux or Windows (via Linux VM)
  • Docker (install via brew install docker)

Step 1: Start colima

colima start

Step 2: Host functional test website on python server and run functional tests

Note: The start_docker.sh script accepts an argument that specifies the package of Purple A11y you want to test. To test your specific branch of Purple A11y, just change "master" with your preferred branch. (see below)

shell_scripts/start_docker.sh git+https://github.com/GovTechSG/purple-a11y.git#master

Step 3: Stop running container and remove image by running stop_docker.sh from a new terminal

shell_scripts/stop_docker.sh
  • Cypress tests report will then be copied over from inside the container to your local repo at ./cypress/reports (view index.html for report)

Step 4: Stop colima

colima stop

Run on GitHub Actions

Test changes to tests by triggering Actions to run the test on any branch of tests or purple-a11y.

  • Go to Actions tab.
  • Select Run workflow and choose the branch under Use workflow from to change the tests branch.
  • Optionally, the different git+URL of Purple A11y to change the branch of Purple A11y in Checkout a specific purple a11y branch.

Limitations

  • Docker can only run Chromium in headless mode or through Xvfb (xvfb-run).
  • The tests will not run successfully on Chrome or Edge in Docker.