ref(tests): Suppress unconstructive listener and open handle warnings.

packages/node-integration-tests/jest.config.js

@@ -1,6 +1,7 @@
 const baseConfig = require('../../jest.config.js');
 
 module.exports = {
+  globalSetup: '<rootDir>/setup-tests.ts',
   ...baseConfig,
   testMatch: ['**/test.ts'],
 };

packages/node-integration-tests/package.json

@@ -11,7 +11,7 @@
     "lint:eslint": "eslint . --cache --cache-location '../../eslintcache/' --format stylish",
     "lint:prettier": "prettier --check \"{suites,utils}/**/*.ts\"",
     "type-check": "tsc",
-    "test": "jest --detectOpenHandles --runInBand --forceExit",
+    "test": "jest --runInBand --forceExit",
     "test:watch": "yarn test --watch"
   },
   "dependencies": {

packages/node-integration-tests/setup-tests.ts

@@ -0,0 +1,12 @@
+import EventEmitter from 'events';
+
+const setup = async (): Promise<void> => {
+  // Node warns about a potential memory leak
+  // when more than 10 event listeners are assigned inside a single thread.
+  // Initializing Sentry for each test triggers these warnings after 10th test inside Jest thread.
+  // As we know that it's not a memory leak and number of listeners are limited to the number of tests,
+  // removing the limit on listener count here.
+  EventEmitter.defaultMaxListeners = 0;
+};
+
+export default setup;