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-rwxr-xr-xtests/tail-2/assert.sh68
1 files changed, 68 insertions, 0 deletions
diff --git a/tests/tail-2/assert.sh b/tests/tail-2/assert.sh
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+#!/bin/sh
+# Test for assertion failure in "test".
+
+# Copyright (C) 1999-2020 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/>.
+
+
+# This test fails with tail from textutils-2.0.
+# It would get something like this:
+# tail: tail.c:718: recheck: Assertion 'valid_file_spec (f)' failed.
+# Aborted
+# due to a race condition in which a dev/inode pair is reused.
+
+. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+print_ver_ tail
+
+check_tail_output()
+{
+ local delay="$1"
+ grep "$tail_re" out ||
+ { sleep $delay; return 1; }
+}
+
+# Terminate any background tail process
+cleanup_() { kill $pid 2>/dev/null && wait $pid; }
+
+# Speedup the non inotify case
+fastpoll='-s.1 --max-unchanged-stats=1'
+
+for mode in '' '---disable-inotify'; do
+ rm -f a foo out
+ touch a foo || framework_failure_
+
+ tail $mode --follow=name $fastpoll a foo > out 2>&1 & pid=$!
+
+ # Wait up to 12.7s for tail to start.
+ echo x > a || framework_failure_
+ tail_re='^x$' retry_delay_ check_tail_output .1 7 ||
+ { cat out; fail=1; break; }
+
+ # Wait 12.7s for this diagnostic:
+ # tail: foo: No such file or directory
+ rm foo || framework_failure_
+ tail_re='No such file' retry_delay_ check_tail_output .1 7 ||
+ { cat out; fail=1; break; }
+
+ # Wait up to 12.7s for tail to notice new foo file
+ ok='ok ok ok'
+ echo "$ok" > foo || framework_failure_
+ tail_re="^$ok$" retry_delay_ check_tail_output .1 7 ||
+ { echo "$0: foo: unexpected delay?"; cat out; fail=1; break; }
+
+ cleanup_
+done
+
+Exit $fail