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test(browser-integration-test): Fix flakey test #15051

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test(browser-integration-test): Fix flakey test #15051

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18 changes: 7 additions & 11 deletions dev-packages/browser-integration-tests/suites/tracing/request/fetch/test.ts
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Original file line number Diff line number Diff line change
@@ -1,8 +1,10 @@
import { expect } from '@playwright/test';
import type { Event } from '@sentry/core';

import { sentryTest } from '../../../../utils/fixtures';
import { getMultipleSentryEnvelopeRequests, shouldSkipTracingTest } from '../../../../utils/helpers';
import {
envelopeRequestParser,
shouldSkipTracingTest,
waitForTransactionRequestOnUrl,
} from '../../../../utils/helpers';

sentryTest('should create spans for fetch requests', async ({ getLocalTestUrl, page }) => {
if (shouldSkipTracingTest()) {
Expand All @@ -11,14 +13,8 @@ sentryTest('should create spans for fetch requests', async ({ getLocalTestUrl, p

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

// Because we fetch from http://example.com, fetch will throw a CORS error in firefox and webkit.
// Chromium does not throw for cors errors.
// This means that we will intercept a dynamic amount of envelopes here.

// We will wait 500ms for all envelopes to be sent. Generally, in all browsers, the last sent
// envelope contains tracing data.
const envelopes = await getMultipleSentryEnvelopeRequests<Event>(page, 4, { url, timeout: 10000 });
const tracingEvent = envelopes.find(event => event.type === 'transaction')!; // last envelope contains tracing data on all browsers
const req = await waitForTransactionRequestOnUrl(page, url);
const tracingEvent = envelopeRequestParser(req);

const requestSpans = tracingEvent.spans?.filter(({ op }) => op === 'http.client');

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