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09fcf494a1
* tests/init.cfg: Introduce a retry_delay_() function to repeatedly call a test function that requires a delay. This delay can now be shorter for the common case on fast systems, but will double until a configurable limit it reached before failing on slower systems. * tests/dd/reblock: Use retry_delay_. * tests/misc/cat-buf: Likewise. * tests/misc/stdbuf: Likewise. * tests/tail-2/F-vs-rename: Likewise. * tests/tail-2/flush-initial: Likewise. * tests/tail-2/tail-n0f: Likewise. * tests/tail-2/wait: Likewise. * test/dd/misc: Comment that delay is needed to trigger failure.
45 lines
1.2 KiB
Bash
Executable File
45 lines
1.2 KiB
Bash
Executable File
#!/bin/sh
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# inotify-based tail -f didn't flush its initial output before blocking
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# Copyright (C) 2009-2010 Free Software Foundation, Inc.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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if test "$VERBOSE" = yes; then
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set -x
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tail --version
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fi
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. $srcdir/test-lib.sh
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echo line > in || fail=1
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# Output should be buffered since we're writing to file
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# so we're depending on the flush to write out
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tail -f in > out &
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tail_pid=$!
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# Wait for 1.5s for the file to be flushed.
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tail_flush()
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{
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local delay="$1"
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test -s out ||
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{ sleep "$delay"; return 1; }
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}
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retry_delay_ tail_flush .1 5 || fail=1
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kill $tail_pid
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Exit $fail
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