1#! /bin/sh 2# 3# Copyright (c) 2018-2023 Gavin D. Howard and contributors. 4# 5# Redistribution and use in source and binary forms, with or without 6# modification, are permitted provided that the following conditions are met: 7# 8# * Redistributions of source code must retain the above copyright notice, this 9# list of conditions and the following disclaimer. 10# 11# * Redistributions in binary form must reproduce the above copyright notice, 12# this list of conditions and the following disclaimer in the documentation 13# and/or other materials provided with the distribution. 14# 15# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 16# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 19# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 20# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 21# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 24# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25# POSSIBILITY OF SUCH DAMAGE. 26# 27 28# Tests the timeconst.bc script from the Linux kernel build. 29# You can find the script at kernel/time/timeconst.bc in any Linux repo. 30# One such repo is: https://github.com/torvalds/linux 31 32script="$0" 33testdir=$(dirname "$script") 34 35outputdir=${BC_TEST_OUTPUT_DIR:-$testdir/..} 36 37# Just print the usage and exit with an error. This can receive a message to 38# print. 39# @param 1 A message to print. 40usage() { 41 if [ $# -eq 1 ]; then 42 printf '%s\n\n' "$1" 43 fi 44 printf 'usage: %s [timeconst_script] [exec args...]\n' "$0" 45 exit 1 46} 47 48. "$testdir/../../scripts/functions.sh" 49 50# Gets the timeconst script, which could be a command-line argument. I don't 51# need to check for error because we just skip if it doesn't work. 52if [ "$#" -gt 0 ]; then 53 timeconst="$1" 54 shift 55else 56 timeconst="$testdir/scripts/timeconst.bc" 57fi 58 59# Gets the executable, which could also be a command-line argument. 60if [ "$#" -gt 0 ]; then 61 bc="$1" 62 shift 63 check_exec_arg "$bc" 64else 65 bc="$testdir/../../bin/bc" 66 check_exec_arg "$bc" 67fi 68 69out1="$outputdir/bc_outputs/bc_timeconst.txt" 70out2="$outputdir/bc_outputs/bc_timeconst_results.txt" 71 72outdir=$(dirname "$out1") 73 74# Make sure the directory exists. 75if [ ! -d "$outdir" ]; then 76 mkdir -p "$outdir" 77fi 78 79base=$(basename "$timeconst") 80 81# If the script does not exist, just skip. Running this test is not necessary. 82if [ ! -f "$timeconst" ]; then 83 printf 'Warning: %s does not exist\n' "$timeconst" 84 printf 'Skipping...\n' 85 exit 0 86fi 87 88# I use these, so unset them to make the tests work. 89unset BC_ENV_ARGS 90unset BC_LINE_LENGTH 91unset DC_ENV_ARGS 92unset DC_LINE_LENGTH 93 94printf 'Running %s...' "$base" 95 96# Get a list of numbers. Funny how bc can help with that. 97nums=$(printf 'for (i = 0; i <= 1000; ++i) { i }\n' | bc) 98 99# Run each number through the script. 100for i in $nums; do 101 102 # Run the GNU bc on the test. 103 printf '%s\n' "$i" | bc -q "$timeconst" > "$out1" 104 105 err="$?" 106 107 # If the other bc failed, it's not GNU bc, or this bc. 108 if [ "$err" -ne 0 ]; then 109 printf '\nOther bc is not GNU compatible. Skipping...\n' 110 exit 0 111 fi 112 113 # Run the built bc on the test. 114 printf '%s\n' "$i" | "$bc" "$@" -q "$timeconst" > "$out2" 115 116 diff "$out1" "$out2" 117 118 error="$?" 119 120 # If fail, bail. 121 if [ "$error" -ne 0 ]; then 122 printf '\nFailed on input: %s\n' "$i" 123 exit "$error" 124 fi 125 126done 127 128rm -f "$out1" 129rm -f "$out2" 130 131exec printf 'pass\n' 132