tests/ts/script/replay - master - niceSOFT/util-linux

tests/ts/script/replay
126 строк4 KB
dengzhongyuan365-dev
scriptreplay: fix --divisor discarding fractional seconds
23 июл 2026, 04:42
23 июл 2026, 04:42309039b
#!/usr/bin/env bash

# This file is part of util-linux.
#
# This file 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 2 of the License, or
# (at your option) any later version.
#
# This file 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.

TS_TOPDIR="${0%/*}/../.."
TS_DESC="replay"

. "$TS_TOPDIR/functions.sh"
ts_init "$*"

ts_check_test_command "$TS_CMD_SCRIPT"
ts_check_test_command "$TS_CMD_SCRIPTREPLAY"
ts_check_test_command "$TS_CMD_SCRIPTLIVE"

LOG_OUT_FILE="${TS_OUTDIR}/${TS_TESTNAME}-logfile-out"
LOG_IN_FILE="${TS_OUTDIR}/${TS_TESTNAME}-logfile-in"
LOG_IO_FILE="${TS_OUTDIR}/${TS_TESTNAME}-logfile-io"
TIMING_FILE="${TS_OUTDIR}/${TS_TESTNAME}-logfile-tm"

rm -f $TIMING_FILE $LOG_IN_FILE $LOG_OUT_FILE $LOG_IO_FILE


#
# Old command line format
#
ts_init_subtest "basic"
echo "===recording" >"$TS_OUTPUT"
$TS_CMD_SCRIPT \
	--command "echo hello world; sleep 0.5; echo all done" \
	--timing="$TIMING_FILE" \
	"$LOG_OUT_FILE" >> "$TS_OUTPUT" 2>> "$TS_ERRLOG"

echo "===replaying" >>"$TS_OUTPUT"
$TS_CMD_SCRIPTREPLAY "$TIMING_FILE" "$LOG_OUT_FILE" 1.5 >> "$TS_OUTPUT" 2>> "$TS_ERRLOG"

sed -i "s|$TIMING_FILE|timingfile|g; s|$LOG_OUT_FILE|outlog|g" "$TS_OUTPUT" "$TS_ERRLOG"
ts_finalize_subtest


#
# Divisor must scale the complete delay, not divide tv_sec and tv_usec
# independently (see https://github.com/util-linux/util-linux/issues/4500).
# A 1.000000 s delay with divisor 2 has to become ~0.5 s; the old per-field
# division truncated the whole-seconds field and collapsed it to 0 s.
#
ts_init_subtest "divisor-fractional"
printf '1.000000 1\n' >"$TS_OUTDIR/${TS_TESTNAME}-div-timing"
printf 'Script started\nX' >"$TS_OUTDIR/${TS_TESTNAME}-div-typescript"

start=$(date +%s.%N)
$TS_CMD_SCRIPTREPLAY \
	--divisor 2 \
	"$TS_OUTDIR/${TS_TESTNAME}-div-timing" \
	"$TS_OUTDIR/${TS_TESTNAME}-div-typescript" \
	</dev/null >/dev/null 2>>"$TS_ERRLOG"
end=$(date +%s.%N)
elapsed=$(awk -v e="$end" -v s="$start" 'BEGIN{printf "%.3f", e - s}')

# The fix sleeps ~0.5 s; the bug returned in ~0 s.  Use a window that is
# robust to scheduler jitter but excludes both 0 s (bug) and 1 s (no scaling).
awk -v t="$elapsed" 'BEGIN{exit (t < 0.20 || t > 0.90) ? 1 : 0}' || {
	echo "elapsed=${elapsed}s (expected ~0.5s)" >>"$TS_OUTPUT"
	ts_failed "divisor collapsed delay (elapsed=${elapsed}s)"
}
ts_finalize_subtest


#
# New command line format
#
ts_init_subtest "output"
echo "===recording" >"$TS_OUTPUT"
NUMBER=1 $TS_CMD_SCRIPT \
        --command 'echo "result is $(($NUMBER + 1))"' \
	--log-out "$LOG_OUT_FILE" \
	--log-timing "$TIMING_FILE"    >> "$TS_OUTPUT" 2>> "$TS_ERRLOG"

echo "===replaying" >>"$TS_OUTPUT"
$TS_CMD_SCRIPTREPLAY \
	--log-out "$LOG_OUT_FILE" \
	--log-timing "$TIMING_FILE" >> "$TS_OUTPUT" 2>> "$TS_ERRLOG"

sed -i "s|$TIMING_FILE|timingfile|g; s|$LOG_OUT_FILE|outlog|g" "$TS_OUTPUT" "$TS_ERRLOG"
ts_finalize_subtest


#
# Log input
#
ts_init_subtest "input"
echo "===recording" >"$TS_OUTPUT"
echo 'echo "result is $(($NUMBER + 1))"' | $TS_CMD_SCRIPT \
	--command 'sh' \
	--log-in "$LOG_IN_FILE" \
	--log-timing "$TIMING_FILE" >> /dev/null 2>> "$TS_ERRLOG"

echo "===replaying" >>"$TS_OUTPUT"
$TS_CMD_SCRIPTREPLAY \
	--log-in "$LOG_IN_FILE" \
	--log-timing "$TIMING_FILE" >> "$TS_OUTPUT" 2>> "$TS_ERRLOG"
ts_finalize_subtest


#
# Live replay 
#
ts_init_subtest "live"
TS_KNOWN_FAIL="yes"
NUMBER=123 $TS_CMD_SCRIPTLIVE \
	--command 'sh' \
	--log-in "$LOG_IN_FILE" \
	--log-timing "$TIMING_FILE" >> "$TS_OUTPUT" 2>> "$TS_ERRLOG"
sed -i 's/^[[:alnum:][:punct:][:blank:]]*[\$\#] /prompt> /g' "$TS_OUTPUT"
ts_finalize_subtest

ts_finalize