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-rw-r--r--test/lisp/calendar/time-date-tests.el7
1 files changed, 7 insertions, 0 deletions
diff --git a/test/lisp/calendar/time-date-tests.el b/test/lisp/calendar/time-date-tests.el
index 02df0cd8ad7..d6cf742bc53 100644
--- a/test/lisp/calendar/time-date-tests.el
+++ b/test/lisp/calendar/time-date-tests.el
@@ -97,6 +97,13 @@
'(12 15 16 9 7 2019 1 t 7200)))
))
+(ert-deftest test-decoded-add-zone ()
+ (let ((time '(12 15 16 8 7 2019 1 t 7200)))
+ (should (equal (decoded-time-add time (mdec :zone -3600))
+ '(12 15 15 8 7 2019 1 t 7200)))
+ (should (equal (decoded-time-add time (mdec :zone -7200))
+ '(12 15 14 8 7 2019 1 t 7200)))))
+
(require 'ert)
;;; time-date-tests.el ends here