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Unit Testing

All packages should include test and test:watch scripts:

# Run tests for all packages once
<root> $ pnpm run

# Run tests once for a single package
<root>/packages/<foo> $ pnpm run test
<root> $ pnpm run --filter <package> test

# Watch and rerun tests
<root>/packages/<foo> $ pnpm run test:watch
<root> $ pnpm run --filter <package> test:watch

Coverage Testing

All packages should similarly support a test:cov script which:

  • Writes a coverage report to <package>/coverage/index.html
  • Errors if the coverage threshold is below the current baseline
  • Otherwise updates the baseline

This is aimed at incrementally ratcheting up test coverage over time (though if necessary, the test.coverage stats in the relevant vite.config can be edited and reviewed manually).

# Run tests with coverage checking for all packages
<root> $ pnpm run test:cov

# Run tests with coverage for a single package
<root>/packages/<foo> $ pnpm run test:cov
<root> $ pnpm run --filter <package> test:cov

End-to-End Testing

The viewer package supports end-to-end testing using Cypress. See their docs for more guides.

Note Cypress expects to interact with a running server, which must be started separately (e.g. with pnpm run dev). See ./development.md for more details.

# Open the Cypress UI for interactive end-to-end test running
# This is recommended for local development, but does not immediately work in a
# Codespace-like environment.
<root>/packages/viewer $ pnpm run cy:open

# Run Cypress tests once headlessly
# This is useful for CI, but cy:open is recommended during local development.
<root>/packages/viewer $ pnpm run cy:run

# Run tests against a non-default server
<root>/packages/viewer $ pnpm run cy:run --config baseUrl=<url>

Remote End-to-End Testing

There is a ./bin/e2e script to facilitate running the end-to-end test suite against a few common external URLs:

# Run tests against the deployed production URL
<root> $ ./bin/e2e production

# Run tests against a Cloudflare Pages preview URL for a named branch
<root> $ ./bin/e2e <branch>

# Run tests against a Cloudflare Pages preview URL for the current branch
<root> $ ./bin/e2e