From bb2d12326a03e8925104937569fdab0ebdc34ccb Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sat, 25 Aug 2018 17:36:52 +0100
Subject: [PATCH] test suite: debchange: Work around faketime TZ bug

faketime's CLI does not permit correct unparsing of times in arbitrary
timezones.  So we must save and restore TZ.

See #907264.

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---
 tests/tstunt/debchange | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/tests/tstunt/debchange b/tests/tstunt/debchange
index de324e91..e5ec4d8a 100755
--- a/tests/tstunt/debchange
+++ b/tests/tstunt/debchange
@@ -4,6 +4,13 @@ set -e
 spec=$(date --rfc-3339=seconds -d @"${GIT_AUTHOR_DATE% *}")
 spec=${spec%+*}
 
+# The nonsense with TZ is to work around #907264
+tz_set=${TZ+set}
+if ! test "$tz_set"; then tz_undef=-u; fi
+
 set -x
+
+env TZ=UTC \
 faketime -f "$spec" \
+env $tz_undef TZ${tz_set:+=}"$TZ" \
 "${DGIT_TEST_REAL_DEBCHANGE-debchange}" "$@"
-- 
2.30.2