From 4169646c8489a45584736b52de31ffd06b8d7109 Mon Sep 17 00:00:00 2001
From: Andrej Ocenas <mr.ocenas@gmail.com>
Date: Tue, 20 Oct 2020 17:41:47 +0200
Subject: [PATCH] Chore: Set timezone for tests to non utc. (#28405)

* Set timezone for tests to non utc.

* Fix comment
---
 jest.config.js                                       | 5 ++++-
 packages/grafana-data/src/datetime/timezones.test.ts | 9 +++------
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/jest.config.js b/jest.config.js
index 3d119641268..a32cf1443ab 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -1,4 +1,7 @@
-process.env.TZ = 'UTC';
+// We set this specifically for 2 reasons.
+// 1. It makes sense for both CI tests and local tests to behave the same so issues are found earlier
+// 2. Any wrong timezone handling could be hidden if we use UTC/GMT local time (which would happen in CI).
+process.env.TZ = 'Pacific/Easter';
 
 module.exports = {
   verbose: false,
diff --git a/packages/grafana-data/src/datetime/timezones.test.ts b/packages/grafana-data/src/datetime/timezones.test.ts
index 30f1b9d62fa..cd78b67940b 100644
--- a/packages/grafana-data/src/datetime/timezones.test.ts
+++ b/packages/grafana-data/src/datetime/timezones.test.ts
@@ -2,28 +2,25 @@ import { getTimeZoneInfo } from './timezones';
 import { setTimeZoneResolver } from './common';
 
 describe('getTimeZoneInfo', () => {
-  // global timezone is set to UTC, see jest-config.js file
+  // global timezone is set to Pacific/Easter, see jest-config.js file
 
   describe('IANA canonical name of the timezone', () => {
     it('should resolve for default timezone', () => {
       setTimeZoneResolver(() => 'browser');
       const result = getTimeZoneInfo('', Date.now());
-      expect(result?.ianaName).toBe('Africa/Abidjan');
+      expect(result?.ianaName).toBe('Pacific/Easter');
     });
 
     it('should resolve for browser timezone', () => {
-      // global timezone is set to UTC
       const result = getTimeZoneInfo('browser', Date.now());
-      expect(result?.ianaName).toBe('Africa/Abidjan');
+      expect(result?.ianaName).toBe('Pacific/Easter');
     });
     it('should resolve for utc timezone', () => {
-      // global timezone is set to UTC
       const result = getTimeZoneInfo('utc', Date.now());
       expect(result?.ianaName).toBe('UTC');
     });
 
     it('should resolve for given timezone', () => {
-      // global timezone is set to UTC
       const result = getTimeZoneInfo('Europe/Warsaw', Date.now());
       expect(result?.ianaName).toBe('Europe/Warsaw');
     });