JavaScript in Tests

Assrt lets tests drop into JavaScript for escape-hatch cases: reading computed state, interacting with third-party widgets that expose a JS API, or feeding custom data into the page.

Inline snippets

- javascript:
    code: |
      return window.__APP__.featureFlags;
    as: flags

External files

For longer helpers, extract the snippet to a file and reference it from the step.

- javascript:
    file: ./tests/helpers/seed-cart.js
    args:
      items: 3
      total: 42.00