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-rw-r--r--tests/datetime-compare.scm6
1 files changed, 6 insertions, 0 deletions
diff --git a/tests/datetime-compare.scm b/tests/datetime-compare.scm
index eab2b949..cd077e87 100644
--- a/tests/datetime-compare.scm
+++ b/tests/datetime-compare.scm
@@ -64,6 +64,12 @@
(test-assert "date/-time< other dt, same date"
(date/-time< #2020-01-01 #2020-01-01T10:00:00))
+;; In UTC+2 (CEST) the below datetime overflows into midnight the following
+;; day. Earlier versions of this program only looked at the time component
+(test-assert "date/-time< TZ overflow"
+ (date/-time< #2020-04-05
+ (datetime date: #2020-04-05 time: #22:00:00 tz: "UTC")))
+
(test-assert "date/-time< time-only"
(date/-time< #00:00:00 #10:00:00))