1 files changed, 49 insertions, 0 deletions
diff --git a/tests/misc/date-sec.sh b/tests/misc/date-sec.sh
new file mode 100755
index 0000000..5adc534
--- /dev/null
+++ b/tests/misc/date-sec.sh
@@ -0,0 +1,49 @@
+#!/bin/sh
+# Ensure that a command like
+# date --date="21:04 +0100" +%S' always prints '00'.
+# Before coreutils-5.2.1, it would print the seconds from the current time.
+
+# Copyright (C) 2004-2020 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+print_ver_ date
+
+
+
+# It would be easier simply to sleep for two seconds between two runs
+# of $(date --date="21:04 +0100" +%S) and ensure that both outputs
+# are '00', but I prefer not to sleep unconditionally.  'make check'
+# takes long enough as it is.
+
+n=0
+# See if the current number of seconds is '00' or just before.
+s=$(date +%S)
+case "$s" in
+  58) n=3;;
+  59) n=2;;
+  00) n=1;;
+esac
+
+# If necessary, wait for the system clock to pass the minute mark.
+test $n = 0 || sleep $n
+
+s=$(date --date="21:04 +0100" +%S)
+case "$s" in
+  00) ;;
+  *) fail=1;;
+esac
+
+Exit $fail