ref: Update loader & add test for integrations-function

Author: mydea

packages/browser-integration-tests/fixtures/loader.js

@@ -0,0 +1,19 @@
+import * as Sentry from '@sentry/browser';
+
+window.Sentry = Sentry;
+
+class CustomIntegration {
+  constructor() {
+    this.name = 'CustomIntegration';
+  }
+
+  setupOnce() {}
+}
+
+Sentry.onLoad(function () {
+  Sentry.init({
+    integrations: integrations => [new CustomIntegration()].concat(integrations),
+  });
+
+  window.__sentryLoaded = true;
+});

packages/browser-integration-tests/loader-suites/loader/onLoad/customIntegrationsFunction/init.js

@@ -0,0 +1 @@
+Sentry.forceLoad();

packages/browser-integration-tests/loader-suites/loader/onLoad/customIntegrationsFunction/subject.js

@@ -0,0 +1,38 @@
+import { expect } from '@playwright/test';
+
+import { sentryTest } from '../../../../utils/fixtures';
+
+sentryTest(
+  'should not add default integrations if integrations function is provided',
+  async ({ getLocalTestUrl, page }) => {
+    await page.route('https://dsn.ingest.sentry.io/**/*', route => {
+      return route.fulfill({
+        status: 200,
+        contentType: 'application/json',
+        body: JSON.stringify({ id: 'test-id' }),
+      });
+    });
+
+    const url = await getLocalTestUrl({ testDir: __dirname });
+    await page.goto(url);
+
+    await page.waitForFunction(() => {
+      return (window as any).__sentryLoaded;
+    });
+
+    const hasCustomIntegration = await page.evaluate(() => {
+      return !!(window as any).Sentry.getCurrentHub().getClient().getIntegrationById('CustomIntegration');
+    });
+
+    const hasReplay = await page.evaluate(() => {
+      return !!(window as any).Sentry.getCurrentHub().getClient().getIntegrationById('Replay');
+    });
+    const hasBrowserTracing = await page.evaluate(() => {
+      return !!(window as any).Sentry.getCurrentHub().getClient().getIntegrationById('BrowserTracing');
+    });
+
+    expect(hasCustomIntegration).toEqual(true);
+    expect(hasReplay).toEqual(false);
+    expect(hasBrowserTracing).toEqual(false);
+  },
+);