Answer

Logging in with POST using Playwright

You can use Playwright's API testing feature to log in using a POST request. Here's how:

First, navigate to the login page using the page.goto() method:

await page.goto('https://ray.run/login');

Next, fill in the username and password fields. You can use the page.getByLabel().fill() method for this:

await page.getByLabel('Username').fill('your_username');
await page.getByLabel('Password').fill('your_password');

Then, click on the "Sign in" button:

await page.getByRole('button', { name: 'Sign in' }).click();

Now, wait until the page receives cookies. You can use page.waitForURL() to wait for the final URL:

await page.waitForURL('https://ray.run/dashboard');

Alternatively, wait until a certain element is visible on the page:

await expect(page.getByRole('navigation')).toBeVisible();

Finally, save all cookies into a file for later use:

await page.context().storageState({ path: 'cookies.json' });

And that's it! You've just logged in using a POST request instead of the UI. For more details, check out API testing using Playwright.