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check.pl
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# $MirOS: src/bin/mksh/check.pl,v 1.49 2017/05/05 21:17:31 tg Exp $
# $OpenBSD: th,v 1.1 2013/12/02 20:39:44 millert Exp $
#-
# Copyright (c) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2011,
# 2012, 2013, 2014, 2015, 2017
# mirabilos <m@mirbsd.org>
#
# Provided that these terms and disclaimer and all copyright notices
# are retained or reproduced in an accompanying document, permission
# is granted to deal in this work without restriction, including un-
# limited rights to use, publicly perform, distribute, sell, modify,
# merge, give away, or sublicence.
#
# This work is provided "AS IS" and WITHOUT WARRANTY of any kind, to
# the utmost extent permitted by applicable law, neither express nor
# implied; without malicious intent or gross negligence. In no event
# may a licensor, author or contributor be held liable for indirect,
# direct, other damage, loss, or other issues arising in any way out
# of dealing in the work, even if advised of the possibility of such
# damage or existence of a defect, except proven that it results out
# of said person's immediate fault when using the work as intended.
#-
# Example test:
# name: a-test
# description:
# a test to show how tests are done
# arguments: !-x!-f!
# stdin:
# echo -n *
# false
# expected-stdout: !
# *
# expected-stderr:
# + echo -n *
# + false
# expected-exit: 1
# ---
# This runs the test-program (eg, mksh) with the arguments -x and -f,
# standard input is a file containing "echo hi*\nfalse\n". The program
# is expected to produce "hi*" (no trailing newline) on standard output,
# "+ echo hi*\n+false\n" on standard error, and an exit code of 1.
#
#
# Format of test files:
# - blank lines and lines starting with # are ignored
# - a test file contains a series of tests
# - a test is a series of tag:value pairs ended with a "---" line
# (leading/trailing spaces are stripped from the first line of value)
# - test tags are:
# Tag Flag Description
# ----- ---- -----------
# name r The name of the test; should be unique
# description m What test does
# arguments M Arguments to pass to the program;
# default is no arguments.
# script m Value is written to a file which
# is passed as an argument to the program
# (after the arguments arguments)
# stdin m Value is written to a file which is
# used as standard-input for the program;
# default is to use /dev/null.
# perl-setup m Value is a perl script which is executed
# just before the test is run. Try to
# avoid using this...
# perl-cleanup m Value is a perl script which is executed
# just after the test is run. Try to
# avoid using this...
# env-setup M Value is a list of NAME=VALUE elements
# which are put in the environment before
# the test is run. If the =VALUE is
# missing, NAME is removed from the
# environment. Programs are run with
# the following minimal environment:
# HOME, LD_LIBRARY_PATH, LOCPATH,
# LOGNAME, PATH, SHELL, UNIXMODE,
# UNIXROOT, USER
# (values taken from the environment of
# the test harness).
# CYGWIN is set to nodosfilewarning.
# ENV is set to /nonexistant.
# __progname is set to the -p argument.
# __perlname is set to $^X (perlexe).
# @utflocale@ is substituted from -U.
# file-setup mps Used to create files, directories
# and symlinks. First word is either
# file, dir or symlink; second word is
# permissions; this is followed by a
# quoted word that is the name of the
# file; the end-quote should be followed
# by a newline, then the file data
# (if any). The first word may be
# preceded by a ! to strip the trailing
# newline in a symlink.
# file-result mps Used to verify a file, symlink or
# directory is created correctly.
# The first word is either
# file, dir or symlink; second word is
# expected permissions; third word
# is user-id; fourth is group-id;
# fifth is "exact" or "pattern"
# indicating whether the file contents
# which follow is to be matched exactly
# or if it is a regular expression.
# The fifth argument is the quoted name
# of the file that should be created.
# The end-quote should be followed
# by a newline, then the file data
# (if any). The first word may be
# preceded by a ! to strip the trailing
# newline in the file contents.
# The permissions, user and group fields
# may be * meaning accept any value.
# time-limit Time limit - the program is sent a
# SIGKILL N seconds. Default is no
# limit.
# expected-fail 'yes' if the test is expected to fail.
# expected-exit expected exit code. Can be a number,
# or a C expression using the variables
# e, s and w (exit code, termination
# signal, and status code).
# expected-stdout m What the test should generate on stdout;
# default is to expect no output.
# expected-stdout-pattern m A perl pattern which matches the
# expected output.
# expected-stderr m What the test should generate on stderr;
# default is to expect no output.
# expected-stderr-pattern m A perl pattern which matches the
# expected standard error.
# category m Specify a comma separated list of
# 'categories' of program that the test
# is to be run for. A category can be
# negated by prefixing the name with a !.
# The idea is that some tests in a
# test suite may apply to a particular
# program version and shouldn't be run
# on other versions. The category(s) of
# the program being tested can be
# specified on the command line.
# One category os:XXX is predefined
# (XXX is the operating system name,
# eg, linux, dec_osf).
# need-ctty 'yes' if the test needs a ctty, run
# with -C regress:no-ctty to disable.
# Flag meanings:
# r tag is required (eg, a test must have a name tag).
# m value can be multiple lines. Lines must be prefixed with
# a tab. If the value part of the initial tag:value line is
# - empty: the initial blank line is stripped.
# - a lone !: the last newline in the value is stripped;
# M value can be multiple lines (prefixed by a tab) and consists
# of multiple fields, delimited by a field separator character.
# The value must start and end with the f-s-c.
# p tag takes parameters (used with m).
# s tag can be used several times.
# require Config only if it exists
# pull EINTR from POSIX.pm or Errno.pm if they exist
# otherwise just skip it
BEGIN {
eval {
require Config;
import Config;
1;
};
$EINTR = 0;
eval {
require POSIX;
$EINTR = POSIX::EINTR();
};
if ($@) {
eval {
require Errno;
$EINTR = Errno::EINTR();
} or do {
$EINTR = 0;
};
}
};
use Getopt::Std;
$os = defined $^O ? $^O : 'unknown';
($prog = $0) =~ s#.*/##;
$Usage = <<EOF ;
Usage: $prog [-Pv] [-C cat] [-e e=v] [-p prog] [-s fn] [-T dir] \
[-t tmo] [-U lcl] name ...
-C c Specify the comma separated list of categories the program
belongs to (see category field).
-e e=v Set the environment variable e to v for all tests
(if no =v is given, the current value is used)
Only one -e option can be given at the moment, sadly.
-P program (-p) string has multiple words, and the program is in
the path (kludge option)
-p p Use p as the program to test
-s s Read tests from file s; if s is a directory, it is recursively
scaned for test files (which end in .t).
-T dir Use dir instead of /tmp to hold temporary files
-t t Use t as default time limit for tests (default is unlimited)
-U lcl Use lcl as UTF-8 locale (e.g. C.UTF-8) instead of the default
-v Verbose mode: print reason test failed.
name specifies the name of the test(s) to run; if none are
specified, all tests are run.
EOF
# See comment above for flag meanings
%test_fields = (
'name', 'r',
'description', 'm',
'arguments', 'M',
'script', 'm',
'stdin', 'm',
'perl-setup', 'm',
'perl-cleanup', 'm',
'env-setup', 'M',
'file-setup', 'mps',
'file-result', 'mps',
'time-limit', '',
'expected-fail', '',
'expected-exit', '',
'expected-stdout', 'm',
'expected-stdout-pattern', 'm',
'expected-stderr', 'm',
'expected-stderr-pattern', 'm',
'category', 'm',
'need-ctty', '',
'need-pass', '',
);
# Filled in by read_test()
%internal_test_fields = (
':full-name', 1, # file:name
':long-name', 1, # dir/file:lineno:name
);
# Categories of the program under test. Provide the current
# os by default.
%categories = (
"os:$os", '1'
);
$nfailed = 0;
$nifailed = 0;
$nxfailed = 0;
$npassed = 0;
$nxpassed = 0;
%known_tests = ();
if (!getopts('C:Ee:Pp:s:T:t:U:v')) {
print STDERR $Usage;
exit 1;
}
die "$prog: no program specified (use -p)\n" if !defined $opt_p;
die "$prog: no test set specified (use -s)\n" if !defined $opt_s;
$test_prog = $opt_p;
$verbose = defined $opt_v && $opt_v;
$is_ebcdic = defined $opt_E && $opt_E;
$test_set = $opt_s;
$temp_base = $opt_T || "/tmp";
$utflocale = $opt_U || (($os eq "hpux") ? "en_US.utf8" : "en_US.UTF-8");
if (defined $opt_t) {
die "$prog: bad -t argument (should be number > 0): $opt_t\n"
if $opt_t !~ /^\d+$/ || $opt_t <= 0;
$default_time_limit = $opt_t;
}
$program_kludge = defined $opt_P ? $opt_P : 0;
if ($is_ebcdic) {
$categories{'shell:ebcdic-yes'} = 1;
$categories{'shell:ascii-no'} = 1;
} else {
$categories{'shell:ebcdic-no'} = 1;
$categories{'shell:ascii-yes'} = 1;
}
if (defined $opt_C) {
foreach $c (split(',', $opt_C)) {
$c =~ s/\s+//;
die "$prog: categories can't be negated on the command line\n"
if ($c =~ /^!/);
$categories{$c} = 1;
}
}
# Note which tests are to be run.
%do_test = ();
grep($do_test{$_} = 1, @ARGV);
$all_tests = @ARGV == 0;
# Set up a very minimal environment
%new_env = ();
foreach $env (('HOME', 'LD_LIBRARY_PATH', 'LOCPATH', 'LOGNAME',
'PATH', 'SHELL', 'UNIXMODE', 'UNIXROOT', 'USER')) {
$new_env{$env} = $ENV{$env} if defined $ENV{$env};
}
$new_env{'CYGWIN'} = 'nodosfilewarning';
$new_env{'ENV'} = '/nonexistant';
if (($os eq 'VMS') || ($Config{perlpath} =~ m/$Config{_exe}$/i)) {
$new_env{'__perlname'} = $Config{perlpath};
} else {
$new_env{'__perlname'} = $Config{perlpath} . $Config{_exe};
}
$new_env{'__perlname'} = $^X if ($new_env{'__perlname'} eq '') and -f $^X and -x $^X;
if ($new_env{'__perlname'} eq '') {
foreach $pathelt (split /:/,$ENV{'PATH'}) {
chomp($pathelt = `pwd`) if $pathelt eq '';
my $x = $pathelt . '/' . $^X;
next unless -f $x and -x $x;
$new_env{'__perlname'} = $x;
last;
}
}
$new_env{'__perlname'} = $^X if ($new_env{'__perlname'} eq '');
if (defined $opt_e) {
# XXX need a way to allow many -e arguments...
if ($opt_e =~ /^([a-zA-Z_]\w*)(|=(.*))$/) {
$new_env{$1} = $2 eq '' ? $ENV{$1} : $3;
} else {
die "$0: bad -e argument: $opt_e\n";
}
}
%old_env = %ENV;
chop($pwd = `pwd 2>/dev/null`);
die "$prog: couldn't get current working directory\n" if $pwd eq '';
die "$prog: couldn't cd to $pwd - $!\n" if !chdir($pwd);
die "$prog: couldn't cd to $temp_base - $!\n" if !chdir($temp_base);
die "$prog: couldn't get temporary directory base\n" unless -d '.';
$temps = sprintf("chk%d-%d.", $$, time());
$tempi = 0;
until (mkdir(($tempdir = sprintf("%s%03d", $temps, $tempi)), 0700)) {
die "$prog: couldn't get temporary directory\n" if $tempi++ >= 999;
}
die "$prog: couldn't cd to $tempdir - $!\n" if !chdir($tempdir);
chop($temp_dir = `pwd 2>/dev/null`);
die "$prog: couldn't get temporary directory\n" if $temp_dir eq '';
die "$prog: couldn't cd to $pwd - $!\n" if !chdir($pwd);
if (!$program_kludge) {
$test_prog = "$pwd/$test_prog" if (substr($test_prog, 0, 1) ne '/') &&
($os ne 'os2' || substr($test_prog, 1, 1) ne ':');
die "$prog: $test_prog is not executable - bye\n"
if (! -x $test_prog && $os ne 'os2');
}
@trap_sigs = ('TERM', 'QUIT', 'INT', 'PIPE', 'HUP');
@SIG{@trap_sigs} = ('cleanup_exit') x @trap_sigs;
$child_kill_ok = 0;
$SIG{'ALRM'} = 'catch_sigalrm';
$| = 1;
# Create temp files
$temps = "${temp_dir}/rts";
$tempi = "${temp_dir}/rti";
$tempo = "${temp_dir}/rto";
$tempe = "${temp_dir}/rte";
$tempdir = "${temp_dir}/rtd";
mkdir($tempdir, 0700) or die "$prog: couldn't mkdir $tempdir - $!\n";
if (-d $test_set) {
$file_prefix_skip = length($test_set) + 1;
$ret = &process_test_dir($test_set);
} else {
$file_prefix_skip = 0;
$ret = &process_test_file($test_set);
}
&cleanup_exit() if !defined $ret;
$tot_failed = $nfailed + $nifailed + $nxfailed;
$tot_passed = $npassed + $nxpassed;
if ($tot_failed || $tot_passed) {
print "Total failed: $tot_failed";
print " ($nifailed ignored)" if $nifailed;
print " ($nxfailed unexpected)" if $nxfailed;
print " (as expected)" if $nfailed && !$nxfailed && !$nifailed;
print " ($nfailed expected)" if $nfailed && ($nxfailed || $nifailed);
print "\nTotal passed: $tot_passed";
print " ($nxpassed unexpected)" if $nxpassed;
print "\n";
}
&cleanup_exit('ok');
sub
cleanup_exit
{
local($sig, $exitcode) = ('', 1);
if ($_[0] eq 'ok') {
unless ($nxfailed) {
$exitcode = 0;
} else {
$exitcode = 1;
}
} elsif ($_[0] ne '') {
$sig = $_[0];
}
unlink($tempi, $tempo, $tempe, $temps);
&scrub_dir($tempdir) if defined $tempdir;
rmdir($tempdir) if defined $tempdir;
rmdir($temp_dir) if defined $temp_dir;
if ($sig) {
$SIG{$sig} = 'DEFAULT';
kill $sig, $$;
return;
}
exit $exitcode;
}
sub
catch_sigalrm
{
$SIG{'ALRM'} = 'catch_sigalrm';
kill(9, $child_pid) if $child_kill_ok;
$child_killed = 1;
}
sub
process_test_dir
{
local($dir) = @_;
local($ret, $file);
local(@todo) = ();
if (!opendir(DIR, $dir)) {
print STDERR "$prog: can't open directory $dir - $!\n";
return undef;
}
while (defined ($file = readdir(DIR))) {
push(@todo, $file) if $file =~ /^[^.].*\.t$/;
}
closedir(DIR);
foreach $file (@todo) {
$file = "$dir/$file";
if (-d $file) {
$ret = &process_test_dir($file);
} elsif (-f _) {
$ret = &process_test_file($file);
}
last if !defined $ret;
}
return $ret;
}
sub
process_test_file
{
local($file) = @_;
local($ret);
if (!open(IN, $file)) {
print STDERR "$prog: can't open $file - $!\n";
return undef;
}
binmode(IN);
while (1) {
$ret = &read_test($file, IN, *test);
last if !defined $ret || !$ret;
next if !$all_tests && !$do_test{$test{'name'}};
next if !&category_check(*test);
$ret = &run_test(*test);
last if !defined $ret;
}
close(IN);
return $ret;
}
sub
run_test
{
local(*test) = @_;
local($name) = $test{':full-name'};
return undef if !&scrub_dir($tempdir);
if (defined $test{'stdin'}) {
return undef if !&write_file($tempi, $test{'stdin'});
$ifile = $tempi;
} else {
$ifile = '/dev/null';
}
if (defined $test{'script'}) {
return undef if !&write_file($temps, $test{'script'});
}
if (!chdir($tempdir)) {
print STDERR "$prog: couldn't cd to $tempdir - $!\n";
return undef;
}
if (defined $test{'file-setup'}) {
local($i);
local($type, $perm, $rest, $c, $len, $name);
for ($i = 0; $i < $test{'file-setup'}; $i++) {
$val = $test{"file-setup:$i"};
# format is: type perm "name"
($type, $perm, $rest) =
split(' ', $val, 3);
$c = substr($rest, 0, 1);
$len = index($rest, $c, 1) - 1;
$name = substr($rest, 1, $len);
$rest = substr($rest, 2 + $len);
$perm = oct($perm) if $perm =~ /^\d+$/;
if ($type eq 'file') {
return undef if !&write_file($name, $rest);
if (!chmod($perm, $name)) {
print STDERR
"$prog:$test{':long-name'}: can't chmod $perm $name - $!\n";
return undef;
}
} elsif ($type eq 'dir') {
if (!mkdir($name, $perm)) {
print STDERR
"$prog:$test{':long-name'}: can't mkdir $perm $name - $!\n";
return undef;
}
} elsif ($type eq 'symlink') {
local($oumask) = umask($perm);
local($ret) = symlink($rest, $name);
umask($oumask);
if (!$ret) {
print STDERR
"$prog:$test{':long-name'}: couldn't create symlink $name - $!\n";
return undef;
}
}
}
}
if (defined $test{'perl-setup'}) {
eval $test{'perl-setup'};
if ($@ ne '') {
print STDERR "$prog:$test{':long-name'}: error running perl-setup - $@\n";
return undef;
}
}
$pid = fork;
if (!defined $pid) {
print STDERR "$prog: can't fork - $!\n";
return undef;
}
if (!$pid) {
@SIG{@trap_sigs} = ('DEFAULT') x @trap_sigs;
$SIG{'ALRM'} = 'DEFAULT';
if (defined $test{'env-setup'}) {
local($var, $val, $i);
foreach $var (split(substr($test{'env-setup'}, 0, 1),
$test{'env-setup'}))
{
$i = index($var, '=');
next if $i == 0 || $var eq '';
if ($i < 0) {
delete $new_env{$var};
} else {
$new_env{substr($var, 0, $i)} = substr($var, $i + 1);
}
}
}
if (!open(STDIN, "< $ifile")) {
print STDERR "$prog: couldn't open $ifile in child - $!\n";
kill('TERM', $$);
}
binmode(STDIN);
if (!open(STDOUT, "> $tempo")) {
print STDERR "$prog: couldn't open $tempo in child - $!\n";
kill('TERM', $$);
}
binmode(STDOUT);
if (!open(STDERR, "> $tempe")) {
print STDOUT "$prog: couldn't open $tempe in child - $!\n";
kill('TERM', $$);
}
binmode(STDERR);
if ($program_kludge) {
@argv = split(' ', $test_prog);
} else {
@argv = ($test_prog);
}
if (defined $test{'arguments'}) {
push(@argv,
split(substr($test{'arguments'}, 0, 1),
substr($test{'arguments'}, 1)));
}
push(@argv, $temps) if defined $test{'script'};
#XXX realpathise, use command -v/whence -p/which, or sth. like that
#XXX if !$program_kludge, we get by with not doing it for now tho
$new_env{'__progname'} = $argv[0];
# The following doesn't work with perl5... Need to do it explicitly - yuck.
#%ENV = %new_env;
foreach $k (keys(%ENV)) {
delete $ENV{$k};
}
$ENV{$k} = $v while ($k,$v) = each %new_env;
exec { $argv[0] } @argv;
print STDERR "$prog: couldn't execute $test_prog - $!\n";
kill('TERM', $$);
exit(95);
}
$child_pid = $pid;
$child_killed = 0;
$child_kill_ok = 1;
alarm($test{'time-limit'}) if defined $test{'time-limit'};
while (1) {
$xpid = waitpid($pid, 0);
$child_kill_ok = 0;
if ($xpid < 0) {
if ($EINTR) {
next if $! == $EINTR;
}
print STDERR "$prog: error waiting for child - $!\n";
return undef;
}
last;
}
$status = $?;
alarm(0) if defined $test{'time-limit'};
$failed = 0;
$why = '';
if ($child_killed) {
$failed = 1;
$why .= "\ttest timed out (limit of $test{'time-limit'} seconds)\n";
}
$ret = &eval_exit($test{'long-name'}, $status, $test{'expected-exit'});
return undef if !defined $ret;
if (!$ret) {
local($expl);
$failed = 1;
if (($status & 0xff) == 0x7f) {
$expl = "stopped";
} elsif (($status & 0xff)) {
$expl = "signal " . ($status & 0x7f);
} else {
$expl = "exit-code " . (($status >> 8) & 0xff);
}
$why .=
"\tunexpected exit status $status ($expl), expected $test{'expected-exit'}\n";
}
$tmp = &check_output($test{'long-name'}, $tempo, 'stdout',
$test{'expected-stdout'}, $test{'expected-stdout-pattern'});
return undef if !defined $tmp;
if ($tmp ne '') {
$failed = 1;
$why .= $tmp;
}
$tmp = &check_output($test{'long-name'}, $tempe, 'stderr',
$test{'expected-stderr'}, $test{'expected-stderr-pattern'});
return undef if !defined $tmp;
if ($tmp ne '') {
$failed = 1;
$why .= $tmp;
}
$tmp = &check_file_result(*test);
return undef if !defined $tmp;
if ($tmp ne '') {
$failed = 1;
$why .= $tmp;
}
if (defined $test{'perl-cleanup'}) {
eval $test{'perl-cleanup'};
if ($@ ne '') {
print STDERR "$prog:$test{':long-name'}: error running perl-cleanup - $@\n";
return undef;
}
}
if (!chdir($pwd)) {
print STDERR "$prog: couldn't cd to $pwd - $!\n";
return undef;
}
if ($failed) {
if (!$test{'expected-fail'}) {
if ($test{'need-pass'}) {
print "FAIL $name\n";
$nxfailed++;
} else {
print "FAIL $name (ignored)\n";
$nifailed++;
}
} else {
print "fail $name (as expected)\n";
$nfailed++;
}
$why = "\tDescription"
. &wrap_lines($test{'description'}, " (missing)\n")
. $why;
} elsif ($test{'expected-fail'}) {
print "PASS $name (unexpectedly)\n";
$nxpassed++;
} else {
print "pass $name\n";
$npassed++;
}
print $why if $verbose;
return 0;
}
sub
category_check
{
local(*test) = @_;
local($c);
return 0 if ($test{'need-ctty'} && defined $categories{'regress:no-ctty'});
return 1 if (!defined $test{'category'});
local($ok) = 0;
foreach $c (split(',', $test{'category'})) {
$c =~ s/\s+//;
if ($c =~ /^!/) {
$c = $';
return 0 if (defined $categories{$c});
$ok = 1;
} else {
$ok = 1 if (defined $categories{$c});
}
}
return $ok;
}
sub
scrub_dir
{
local($dir) = @_;
local(@todo) = ();
local($file);
if (!opendir(DIR, $dir)) {
print STDERR "$prog: couldn't open directory $dir - $!\n";
return undef;
}
while (defined ($file = readdir(DIR))) {
push(@todo, $file) if $file ne '.' && $file ne '..';
}
closedir(DIR);
foreach $file (@todo) {
$file = "$dir/$file";
if (-d $file) {
return undef if !&scrub_dir($file);
if (!rmdir($file)) {
print STDERR "$prog: couldn't rmdir $file - $!\n";
return undef;
}
} else {
if (!unlink($file)) {
print STDERR "$prog: couldn't unlink $file - $!\n";
return undef;
}
}
}
return 1;
}
sub
write_file
{
local($file, $str) = @_;
if (!open(TEMP, "> $file")) {
print STDERR "$prog: can't open $file - $!\n";
return undef;
}
binmode(TEMP);
print TEMP $str;
if (!close(TEMP)) {
print STDERR "$prog: error writing $file - $!\n";
return undef;
}
return 1;
}
sub
check_output
{
local($name, $file, $what, $expect, $expect_pat) = @_;
local($got) = '';
local($why) = '';
local($ret);
if (!open(TEMP, "< $file")) {
print STDERR "$prog:$name($what): couldn't open $file after running program - $!\n";
return undef;
}
binmode(TEMP);
while (<TEMP>) {
$got .= $_;
}
close(TEMP);
return compare_output($name, $what, $expect, $expect_pat, $got);
}
sub
compare_output
{
local($name, $what, $expect, $expect_pat, $got) = @_;
local($why) = '';
if (defined $expect_pat) {
$_ = $got;
$ret = eval "$expect_pat";
if ($@ ne '') {
print STDERR "$prog:$name($what): error evaluating $what pattern: $expect_pat - $@\n";
return undef;
}
if (!$ret) {
$why = "\tunexpected $what - wanted pattern";
$why .= &wrap_lines($expect_pat);
$why .= "\tgot";
$why .= &wrap_lines($got);
}
} else {
$expect = '' if !defined $expect;
if ($got ne $expect) {
$why .= "\tunexpected $what - " . &first_diff($expect, $got) . "\n";
$why .= "\twanted";
$why .= &wrap_lines($expect);
$why .= "\tgot";
$why .= &wrap_lines($got);
}
}
return $why;
}
sub
wrap_lines
{
local($str, $empty) = @_;
local($nonl) = substr($str, -1, 1) ne "\n";
return (defined $empty ? $empty : " nothing\n") if $str eq '';
substr($str, 0, 0) = ":\n";
$str =~ s/\n/\n\t\t/g;
if ($nonl) {
$str .= "\n\t[incomplete last line]\n";
} else {
chop($str);
chop($str);
}
return $str;
}
sub
first_diff
{
local($exp, $got) = @_;
local($lineno, $char) = (1, 1);
local($i, $exp_len, $got_len);
local($ce, $cg);
$exp_len = length($exp);
$got_len = length($got);
if ($exp_len != $got_len) {
if ($exp_len < $got_len) {
if (substr($got, 0, $exp_len) eq $exp) {
return "got too much output";
}
} elsif (substr($exp, 0, $got_len) eq $got) {
return "got too little output";
}
}
for ($i = 0; $i < $exp_len; $i++) {
$ce = substr($exp, $i, 1);
$cg = substr($got, $i, 1);
last if $ce ne $cg;
$char++;
if ($ce eq "\n") {
$lineno++;
$char = 1;
}
}
return "first difference: line $lineno, char $char (wanted " .
&format_char($ce) . ", got " . &format_char($cg);
}
sub
format_char
{
local($ch, $s, $q);
$ch = ord($_[0]);
$q = "'";
if ($is_ebcdic) {
if ($ch == 0x15) {
return $q . '\n' . $q;
} elsif ($ch == 0x16) {
return $q . '\b' . $q;
} elsif ($ch == 0x05) {
return $q . '\t' . $q;
} elsif ($ch < 64 || $ch == 255) {
return sprintf("X'%02X'", $ch);
}
return sprintf("'%c' (X'%02X')", $ch, $ch);
}
$s = sprintf("0x%02X (", $ch);
if ($ch == 10) {
return $s . $q . '\n' . $q . ')';
} elsif ($ch == 13) {
return $s . $q . '\r' . $q . ')';
} elsif ($ch == 8) {
return $s . $q . '\b' . $q . ')';
} elsif ($ch == 9) {
return $s . $q . '\t' . $q . ')';
} elsif ($ch > 127) {
$ch -= 128;
$s .= "M-";
}
if ($ch < 32) {
return sprintf("%s^%c)", $s, $ch + ord('@'));
} elsif ($ch == 127) {
return $s . "^?)";
}
return sprintf("%s'%c')", $s, $ch);
}
sub
eval_exit
{
local($name, $status, $expect) = @_;
local($expr);
local($w, $e, $s) = ($status, ($status >> 8) & 0xff, $status & 0x7f);
$e = -1000 if $status & 0xff;
$s = -1000 if $s == 0x7f;
if (!defined $expect) {
$expr = '$w == 0';
} elsif ($expect =~ /^(|-)\d+$/) {
$expr = "\$e == $expect";
} else {
$expr = $expect;
$expr =~ s/\b([wse])\b/\$$1/g;
$expr =~ s/\b(SIG[A-Z][A-Z0-9]*)\b/&$1/g;
}
$w = eval $expr;
if ($@ ne '') {
print STDERR "$prog:$test{':long-name'}: bad expected-exit expression: $expect ($@)\n";
return undef;
}
return $w;
}
sub
read_test
{
local($file, $in, *test) = @_;
local($field, $val, $flags, $do_chop, $need_redo, $start_lineno);
local(%cnt, $sfield);
%test = ();
%cnt = ();
while (<$in>) {
chop;
next if /^\s*$/;
next if /^ *#/;
last if /^\s*---\s*$/;
$start_lineno = $. if !defined $start_lineno;
if (!/^([-\w]+):\s*(|\S|\S.*\S)\s*$/) {
print STDERR "$prog:$file:$.: unrecognised line \"$_\"\n";
return undef;
}
($field, $val) = ($1, $2);
$sfield = $field;
$flags = $test_fields{$field};
if (!defined $flags) {
print STDERR "$prog:$file:$.: unrecognised field \"$field\"\n";
return undef;
}
if ($flags =~ /s/) {
local($cnt) = $cnt{$field}++;
$test{$field} = $cnt{$field};
$cnt = 0 if $cnt eq '';
$sfield .= ":$cnt";
} elsif (defined $test{$field}) {