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-rwxr-xr-xtests/tail-2/truncate.sh56
1 files changed, 56 insertions, 0 deletions
diff --git a/tests/tail-2/truncate.sh b/tests/tail-2/truncate.sh
new file mode 100755
index 0000000..3780691
--- /dev/null
+++ b/tests/tail-2/truncate.sh
@@ -0,0 +1,56 @@
+#!/bin/sh
+# Ensure all logs are output upon file truncation
+
+# Copyright (C) 2015-2018 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_ tail
+
+check_tail_output()
+{
+ local delay="$1"
+ grep "$tail_re" out > /dev/null ||
+ { 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 follow in '-f' '-F'; do
+ for mode in '' '---disable-inotify'; do
+ rm -f out
+ seq 10 > f || framework_failure_
+
+ tail $follow $mode $fastpoll f > out 2>&1 & pid=$!
+
+ # Wait up to 12.7s for tail to start
+ tail_re='^10$' retry_delay_ check_tail_output .1 7 ||
+ { cat out; fail=1; }
+
+ seq 11 15 > f || framework_failure_
+
+ # Wait up to 12.7s for new data
+ tail_re='^15$' retry_delay_ check_tail_output .1 7 ||
+ { cat out; fail=1; }
+
+ cleanup_
+ done
+done
+
+Exit $fail