1 files changed, 75 insertions, 0 deletions
diff --git a/tests/tail-2/F-vs-rename.sh b/tests/tail-2/F-vs-rename.sh
new file mode 100755
index 000000000..53bc00dd3
--- /dev/null
+++ b/tests/tail-2/F-vs-rename.sh
@@ -0,0 +1,75 @@
+#!/bin/sh
+# demonstrate that tail -F works when renaming the tailed files
+# Before coreutils-8.3, tail -F a b would stop tracking additions to b
+# after "mv a b".
+
+# Copyright (C) 2009-2012 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 <http://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+print_ver_ tail
+
+touch a b || framework_failure_
+
+debug='---disable-inotify'
+debug=
+tail $debug -F -s.1 a b > out 2>&1 & pid=$!
+
+check_tail_output()
+{
+  local delay="$1"
+  grep "$tail_re" out > /dev/null ||
+    { sleep $delay; return 1; }
+}
+
+# Wait up to 6.3s for tail to start
+echo x > a
+tail_re='^x$' retry_delay_ check_tail_output .1 7 || fail=1
+
+mv a b || fail=1
+
+# Wait 6.3s for this diagnostic:
+# tail: 'a' has become inaccessible: No such file or directory
+tail_re='inaccessible' retry_delay_ check_tail_output .1 7 || fail=1
+
+echo x > a
+# Wait up to 6.3s for this to appear in the output:
+# "tail: '...' has appeared;  following end of new file"
+tail_re='has appeared' retry_delay_ check_tail_output .1 7 ||
+  { echo "$0: a: unexpected delay?"; cat out; fail=1; }
+
+echo y >> b
+# Wait up to 6.3s for "y" to appear in the output:
+tail_f_vs_rename_2() {
+  local delay="$1"
+  tr '\n' @ < out | grep '@@==> b <==@y@$' > /dev/null ||
+    { sleep $delay; return 1; }
+}
+retry_delay_ tail_f_vs_rename_2 .1 7 ||
+  { echo "$0: b: unexpected delay?"; cat out; fail=1; }
+
+echo z >> a
+# Wait up to 6.3s for "z" to appear in the output:
+tail_f_vs_rename_3() {
+  local delay="$1"
+  tr '\n' @ < out | grep '@@==> a <==@z@$' > /dev/null ||
+    { sleep $delay; return 1; }
+}
+retry_delay_ tail_f_vs_rename_3 .1 7 ||
+  { echo "$0: a: unexpected delay?"; cat out; fail=1; }
+
+kill -HUP $pid
+
+Exit $fail