Setting global UTC timezone for tests

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

package.json

@@ -76,7 +76,8 @@
       "ts-jest": {
         "isolatedModules": true
       }
-    }
+    },
+    "globalSetup": "<rootDir>/src/jest.timezone.ts"
   },
   "build": {
     "generateUpdatesFilesForAllChannels": true,

src/common/__tests__/timezones.test.ts

@@ -0,0 +1,12 @@
+/**
+ * Copyright (c) OpenLens Authors. All rights reserved.
+ * Licensed under MIT License. See LICENSE in root directory for more information.
+ */
+
+describe("Timezones", () => {
+  it("should always be UTC", () => {
+    expect(new Date().getTimezoneOffset()).toBe(0);
+  });
+});
+
+export {};

src/jest.timezone.ts

@@ -0,0 +1,11 @@
+/**
+ * Copyright (c) OpenLens Authors. All rights reserved.
+ * Licensed under MIT License. See LICENSE in root directory for more information.
+ */
+
+// Setting the timezone to UTC to ensure same timezone for CI and local environments
+module.exports = async () => {
+  process.env.TZ = "UTC";
+};
+
+export {};