test.ts

import { expect } from '@playwright/test';
import { sentryTest } from '../../../../utils/fixtures';
import { shouldSkipTracingTest } from '../../../../utils/helpers';

sentryTest(
  "instrumentation doesn't override manually added traceparent header, if `propagateTraceparent` is true",
  async ({ getLocalTestUrl, page }) => {
    if (shouldSkipTracingTest()) {
      sentryTest.skip();
    }

    const requestPromise = page.waitForRequest('http://sentry-test-site.example/api/test/');

    const url = await getLocalTestUrl({ testDir: __dirname });

    await page.goto(url);

    const request = await requestPromise;

    const headers = await request.allHeaders();

    expect(headers['sentry-trace']).toBe('abc-123-1');
    expect(headers.baggage).toBe('sentry-trace_id=abc');
    expect(headers.traceparent).toBe('00-abc-123-01');
  },
);