Add test for clean exit from node

CHANGELOG.md

@@ -59,6 +59,7 @@ x.x.x Release notes (yyyy-MM-dd)
 ### Internal
 * Update token in integration test.
 * Upgraded Realm Core from v11.12.0 to v11.13.0.
+* Added a failing test case for Node.js scripts failing to exit cleanly ([#4556](https://github.com/realm/realm-js/pull/4556))
 
 10.14.0 Release notes (2022-3-24)
 =============================================================

integration-tests/tests/src/node/clean-exit.ts

@@ -0,0 +1,31 @@
+////////////////////////////////////////////////////////////////////////////
+//
+// Copyright 2022 Realm Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+////////////////////////////////////////////////////////////////////////////
+
+import { execSync } from "child_process";
+
+describe("Clean exit for Node.js scripts", () => {
+  // Repro for https://github.com/realm/realm-js/issues/4535 - currently still failing
+  it.skip("exits cleanly when creating a new Realm.App", () => {
+    execSync(
+      `node -e 'const Realm = require("realm"); const app = new Realm.App({ id: "myapp-abcde" }); Realm.clearTestState();'`,
+      {
+        timeout: 5000,
+      },
+    );
+  });
+});

integration-tests/tests/src/node/index.ts

@@ -19,3 +19,4 @@
 // NOTE: This file is only supposed to be imported from a Node.js environment
 
 import "./analytics";
+import "./clean-exit";