test.ts

import { createTestServer } from '@sentry-internal/test-utils';
import { describe, expect } from 'vitest';
import { createEsmAndCjsTests } from '../../../../utils/runner';
import { expectConsistentTraceId, expectNoDuplicateSentryBaggageKeys, expectUserSetTraceId } from '../expects';

describe('double baggage prevention', () => {
  createEsmAndCjsTests(__dirname, 'scenario.mjs', 'instrument.mjs', (createRunner, test) => {
    test('fetch with manual getTraceData() does not duplicate sentry baggage entries', async () => {
      const [SERVER_URL, closeTestServer] = await createTestServer()
        .get('/api/fetch-custom-headers', headers => {
          // fetch with manual getTraceData() headers
          expect(headers['sentry-trace']).toEqual(expect.stringMatching(/^[a-f\d]{32}-[a-f\d]{16}$/));
          expectNoDuplicateSentryBaggageKeys(headers['baggage']);
          expectConsistentTraceId(headers);
          expectUserSetTraceId(headers);
        })
        .get('/api/fetch', headers => {
          // fetch without manual headers (baseline)
          expect(headers['sentry-trace']).toEqual(expect.stringMatching(/^[a-f\d]{32}-[a-f\d]{16}$/));
          expectNoDuplicateSentryBaggageKeys(headers['baggage']);
          expectConsistentTraceId(headers);
        })
        .get('/api/http-custom-headers', headers => {
          // http.request with manual getTraceData() headers
          expect(headers['sentry-trace']).toEqual(expect.stringMatching(/^[a-f\d]{32}-[a-f\d]{16}$/));
          expectNoDuplicateSentryBaggageKeys(headers['baggage']);
          expectConsistentTraceId(headers);
          expectUserSetTraceId(headers);
        })
        .start();

      await createRunner()
        .withEnv({ SERVER_URL })
        .ignore('transaction')
        .expect({
          event: {
            exception: {
              values: [{ type: 'Error', value: 'done' }],
            },
          },
        })
        .start()
        .completed();
      closeTestServer();
    });
  });
});