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Sorry to go on about it, but it's my only example ;) And thought it might be of interest/use. Here is FixMyStreet's Cypress workflow https://github.com/mysociety/fixmystreet/blob/master/.github/workflows/cypress.yml with the master script that sets up server etc at https://github.com/mysociety/fixmystreet/blob/master/bin/browser-tests (that has features such as working inside/outside Vagrant, and can do JS code coverage) and then the tests are at https://github.com/mysociety/fixmystreet/tree/master/.cypress/cypress/integration

https://github.com/PostHog/posthog/tree/master/cypress/integration has some useful examples, linked from this article: https://posthog.com/blog/cypress-end-to-end-tests

Also useful: their workflow https://github.com/PostHog/posthog/blob/master/.github/workflows/e2e.yml

Important to absorb the slightly bizarre assertion syntax from Chai - docs here https://www.chaijs.com/api/bdd/

I got Cypress working! I added the datasette.plugins code to the table template and ran a test called plugins.spec.js using the following: javascript context('datasette.plugins API', () => { beforeEach(() => { cy.visit('/fixtures/compound_three_primary_keys') }); it('should exist', () => { let datasette; cy.window().then(win => { datasette = win.datasette; }).then(() => { expect(datasette).to.exist; expect(datasette.plugins).to.exist; }); }); it('should register and execute plugins', () => { let datasette; cy.window().then(win => { datasette = win.datasette; }).then(() => { expect(datasette.plugins.call('numbers')).to.deep.equal([]); // Register a plugin datasette.plugins.register("numbers", (a, b) => a + b, ['a', 'b']); var result = datasette.plugins.call("numbers", {a: 1, b: 2}); expect(result).to.deep.equal([3]); // Second plugin datasette.plugins.register("numbers", (a, b) => a * b, ['a', 'b']); var result2 = datasette.plugins.call("numbers", {a: 1, b: 2}); expect(result2).to.deep.equal([3, 2]); }); }); });