From 1f5e69666a6865cb400d7e8dcadf39ed393e54cb Mon Sep 17 00:00:00 2001
From: Chenwei Zhang <40295569+zchenwei@users.noreply.github.com>
Date: Wed, 23 Feb 2022 10:29:21 -0800
Subject: [PATCH] test: updating unit test to cover undefined case (#1392)

---
 .../hooks/__tests__/useDeprecationWarning.test.tsx  | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/packages/react/src/hooks/__tests__/useDeprecationWarning.test.tsx b/packages/react/src/hooks/__tests__/useDeprecationWarning.test.tsx
index 25a25e36bd9..af5c5b39a5c 100644
--- a/packages/react/src/hooks/__tests__/useDeprecationWarning.test.tsx
+++ b/packages/react/src/hooks/__tests__/useDeprecationWarning.test.tsx
@@ -29,4 +29,17 @@ describe('useDeprecationWarning', () => {
     expect(console.warn).toHaveBeenCalledTimes(0);
     expect(console.warn).not.toHaveBeenCalledWith(message);
   });
+
+  it('should not throw reference error if process is not defined', async () => {
+    const message = 'This component is deprecated, use X instead';
+
+    const originalProcess = global.process;
+    delete global.process;
+
+    renderHook(() => useDeprecationWarning({ message }));
+    expect(console.warn).toHaveBeenCalledTimes(1);
+    expect(console.warn).toHaveBeenCalledWith(message);
+
+    global.process = originalProcess;
+  });
 });