e2e-testing

Create a class per page that exposes locators as readonly properties and actions as async methods, such as goto() and search(). Tests then instantiate the page object in beforeEach hooks and call its methods, keeping selectors centralized and tests readable.

Replace arbitrary waitForTimeout calls with condition-based waits like waitForResponse or locator auto-waiting. Quarantine known flaky tests with test.fixme or conditional test.skip, and identify flakiness by running tests with --repeat-each=10 or --retries=3.

Yes, Playwright projects in the config file run the same tests across Chromium, Firefox, WebKit, and mobile device emulations like Pixel 5. Each project can have its own device settings and viewport configuration.

Configure screenshot: 'only-on-failure', video: 'retain-on-failure', and trace: 'on-first-retry' in playwright.config.ts. You can also capture manual screenshots with page.screenshot() and full-page captures with the fullPage option.

Use context.addInitScript to inject a mock window.ethereum object before page load, implementing methods like eth_requestAccounts and eth_chainId. This lets tests interact with wallet connection flows without a real browser extension.

Skip tests involving real money or irreversible actions, such as trade execution, using test.skip with an environment check like process.env.NODE_ENV === 'production'. Run these tests only against staging environments with test data.