add integration test

Author: Lms24

dev-packages/browser-integration-tests/suites/public-api/startSpan/standalone-sdk-disabled/init.js

@@ -0,0 +1,18 @@
+import * as Sentry from '@sentry/browser';
+
+window.Sentry = Sentry;
+
+window.fetchCallCount = 0;
+window.spanEnded = false;
+
+const originalWindowFetch = window.fetch;
+window.fetch = (...args) => {
+  window.fetchCallCount++;
+  return originalWindowFetch(...args);
+};
+
+Sentry.init({
+  dsn: 'https://[email protected]/1337',
+  tracesSampleRate: 1.0,
+  enabled: false,
+});

dev-packages/browser-integration-tests/suites/public-api/startSpan/standalone-sdk-disabled/subject.js

@@ -0,0 +1,3 @@
+Sentry.startSpan({ name: 'standalone_segment_span', experimental: { standalone: true } }, () => {});
+
+window.spanEnded = true;

dev-packages/browser-integration-tests/suites/public-api/startSpan/standalone-sdk-disabled/test.ts

@@ -0,0 +1,22 @@
+import { expect } from '@playwright/test';
+
+import { sentryTest } from '../../../../utils/fixtures';
+import { shouldSkipTracingTest } from '../../../../utils/helpers';
+
+sentryTest("doesn't send a standalone span envelope if SDK is disabled", async ({ getLocalTestPath, page }) => {
+  if (shouldSkipTracingTest()) {
+    sentryTest.skip();
+  }
+
+  const url = await getLocalTestPath({ testDir: __dirname });
+  await page.goto(url);
+
+  // @ts-expect-error this exists in the test init/subject
+  await page.waitForFunction(() => !!window.spanEnded);
+  await page.waitForTimeout(2000);
+
+  // @ts-expect-error this exists in the test init
+  const fetchCallCount = await page.evaluate(() => window.fetchCallCount);
+  // We expect no fetch calls because the SDK is disabled
+  expect(fetchCallCount).toBe(0);
+});