| <!DOCTYPE html> |
| <html> |
| <body> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/resources/testdriver.js"></script> |
| <script src="/resources/testdriver-vendor.js"></script> |
| <script> |
| |
| function defaultTimeZone() { |
| return (new Intl.DateTimeFormat()).resolvedOptions().timeZone; |
| } |
| promise_test(async t => { |
| const oldTimeZone = "Pacific/Fakaofo"; |
| const newTimeZone = "Asia/Taipei"; |
| // First, setup the time zone in a fixed place. |
| await window.test_driver.set_time_zone(oldTimeZone); |
| assert_equals(defaultTimeZone(), oldTimeZone); |
| return new Promise(r => { |
| window.addEventListener('timezonechange', r); |
| window.test_driver.set_time_zone(newTimeZone); |
| }).then(e => { |
| assert_equals(defaultTimeZone(), newTimeZone); |
| }); |
| }, "Test that the timezonechange event fires on window.addEventListener('timezonechange')"); |
| </script> |
| </body> |
| </html> |
