test: add Playwright and Cypress E2E tests for iframe preview testing

Author: Geethegreat

.gitignore

@@ -23,4 +23,7 @@ duplicates.json
 
 coverage
 
-*.tsbuildinfo
+*.tsbuildinfo
+test-results/
+cypress/videos/
+cypress/screenshots/

cypress.config.ts

@@ -0,0 +1,11 @@
+import { defineConfig } from 'cypress';
+
+export default defineConfig({
+  allowCypressEnv: false,
+  e2e: {
+    baseUrl: 'http://localhost:8000',
+    setupNodeEvents(on, config) {
+      // implement node event listeners here
+    }
+  }
+});

cypress/.eslintrc.json

@@ -0,0 +1,17 @@
+{
+  "env": {
+    "browser": true
+  },
+  "globals": {
+    "cy": "readonly",
+    "describe": "readonly",
+    "it": "readonly",
+    "beforeEach": "readonly",
+    "before": "readonly",
+    "after": "readonly",
+    "afterEach": "readonly",
+    "expect": "readonly",
+    "Cypress": "readonly",
+    "context": "readonly"
+  }
+}

cypress/e2e/editor.cy.ts

@@ -0,0 +1,42 @@
+describe('p5.js Editor - Cypress', () => {
+  function dismissCookies() {
+    cy.get('button').then(($buttons) => {
+      const dismiss = [...$buttons].find((b) =>
+        /accept|ok|got it|agree|close|dismiss|continue/i.test(
+          b.textContent || ''
+        )
+      );
+      if (dismiss) cy.wrap(dismiss).click({ force: true });
+    });
+  }
+
+  function clickPlayButton() {
+    cy.get('[aria-label="Play sketch"]').click({ force: true });
+  }
+
+  it('editor loads and has a sketch iframe', () => {
+    cy.visit('/');
+    dismissCookies();
+    clickPlayButton();
+    cy.get('iframe', { timeout: 15000 }).should('exist');
+  });
+
+  it('can access iframe content frame', () => {
+    cy.visit('/');
+    dismissCookies();
+    cy.get('iframe').then(($iframe) => {
+      // Cypress iframe workaround — needs .contents() jQuery hack
+      const body = $iframe.contents().find('body');
+      cy.wrap(body).should('exist');
+    });
+  });
+
+  it('run button triggers sketch, checks iframe src', () => {
+    cy.visit('/');
+    dismissCookies();
+    clickPlayButton();
+    cy.get('iframe', { timeout: 15000 })
+      .should('have.attr', 'src')
+      .and('include', 'localhost:8002');
+  });
+});

cypress/fixtures/example.json

@@ -0,0 +1,5 @@
+{
+  "name": "Using fixtures to represent data",
+  "email": "hello@cypress.io",
+  "body": "Fixtures are a great way to mock data for responses to routes"
+}

cypress/support/commands.ts

@@ -0,0 +1,37 @@
+/// <reference types="cypress" />
+// ***********************************************
+// This example commands.ts shows you how to
+// create various custom commands and overwrite
+// existing commands.
+//
+// For more comprehensive examples of custom
+// commands please read more here:
+// https://on.cypress.io/custom-commands
+// ***********************************************
+//
+//
+// -- This is a parent command --
+// Cypress.Commands.add('login', (email, password) => { ... })
+//
+//
+// -- This is a child command --
+// Cypress.Commands.add('drag', { prevSubject: 'element'}, (subject, options) => { ... })
+//
+//
+// -- This is a dual command --
+// Cypress.Commands.add('dismiss', { prevSubject: 'optional'}, (subject, options) => { ... })
+//
+//
+// -- This will overwrite an existing command --
+// Cypress.Commands.overwrite('visit', (originalFn, url, options) => { ... })
+//
+// declare global {
+//   namespace Cypress {
+//     interface Chainable {
+//       login(email: string, password: string): Chainable<void>
+//       drag(subject: string, options?: Partial<TypeOptions>): Chainable<Element>
+//       dismiss(subject: string, options?: Partial<TypeOptions>): Chainable<Element>
+//       visit(originalFn: CommandOriginalFn, url: string, options: Partial<VisitOptions>): Chainable<Element>
+//     }
+//   }
+// }

cypress/support/e2e.ts

@@ -0,0 +1,17 @@
+// ***********************************************************
+// This example support/e2e.ts is processed and
+// loaded automatically before your test files.
+//
+// This is a great place to put global configuration and
+// behavior that modifies Cypress.
+//
+// You can change the location of this file or turn off
+// automatically serving support files with the
+// 'supportFile' configuration option.
+//
+// You can read more here:
+// https://on.cypress.io/configuration
+// ***********************************************************
+
+// Import commands.js using ES2015 syntax:
+import './commands';