test suite: debchange: Freeze time

Use faketime's advanced format.  Otherwise if debchange takes too
long, the timestamp generated by debchange is not what we expected.

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/tests/tstunt/debchange b/tests/tstunt/debchange
index f98e7fec3fd2cd3dd5aeecb2ce49ff0d4b6abf8d..de324e919279621161a44d23db7c1d1c196eea0c 100755 (executable)
--- a/tests/tstunt/debchange
+++ b/tests/tstunt/debchange
@@ -1,4 +1,9 @@
 #!/bin/sh
+set -e
+
+spec=$(date --rfc-3339=seconds -d @"${GIT_AUTHOR_DATE% *}")
+spec=${spec%+*}
+
 set -x
-faketime @"${GIT_AUTHOR_DATE% *}" \
+faketime -f "$spec" \
 "${DGIT_TEST_REAL_DEBCHANGE-debchange}" "$@"