package Fetish; # This is a testing framework. # In case you're wondering about the name, it comes from the # names of the three packages: FIleutils, SH-utils, TExtutils. require 5.003; use strict; use vars qw($VERSION @ISA @EXPORT); use FileHandle; use File::Compare qw(compare); @ISA = qw(Exporter); ($VERSION = '$Revision: 1.16 $ ') =~ tr/[0-9].//cd; @EXPORT = qw (run_tests); my $debug = $ENV{DEBUG}; my @Types = qw (IN OUT ERR AUX CMP EXIT PRE POST OUT_SUBST ERR_SUBST); my %Types = map {$_ => 1} @Types; my %Zero_one_type = map {$_ => 1} qw (OUT ERR EXIT PRE POST OUT_SUBST ERR_SUBST); my $srcdir = $ENV{srcdir}; my $Global_count = 1; # When running in a DJGPP environment, make $ENV{SHELL} point to bash. # Otherwise, a bad shell might be used (e.g. command.com) and many # tests would fail. defined $ENV{DJDIR} and $ENV{SHELL} = "$ENV{DJDIR}/bin/bash.exe"; # A file spec: a scalar or a reference to a single-keyed hash # ================ # 'contents' contents only (file name is derived from test name) # {filename => 'contents'} filename and contents # {filename => undef} filename only -- $(srcdir)/filename must exist # # FIXME: If there is more than one input file, then you can't specify `REDIR'. # PIPE is still ok. # # I/O spec: a hash ref with the following properties # ================ # - one key/value pair # - the key must be one of these strings: IN, OUT, ERR, AUX, CMP, EXIT # - the value must be a file spec # {OUT => 'data'} put data in a temp file and compare it to stdout from cmd # {OUT => {'filename'=>undef}} compare contents of existing filename to # stdout from cmd # {OUT => {'filename'=>[$CTOR, $DTOR]}} $CTOR and $DTOR are references to # functions, each which is passed the single argument `filename'. # $CTOR must create `filename'. # DTOR may be omitted in which case `sub{unlink @_[0]}' is used. # FIXME: implement this # {ERR => ...} # Same as for OUT, but compare with stderr, not stdout. # {OUT_SUBST => 's/variable_output/expected_output/'} # Transform actual standard output before comparing it against expected output. # This is useful e.g. for programs like du that produce output that # varies a lot from system. E.g., an empty file may consume zero file # blocks, or more, depending on the OS and on the file system type. # {ERR_SUBST => 's/variable_output/expected_output/'} # Transform actual stderr output before comparing it against expected. # This is useful when verifying that we get a meaningful diagnostic. # For example, in rm/fail-2eperm, we have to account for three different # diagnostics: Operation not permitted, Not owner, and Permission denied. # {EXIT => N} expect exit status of cmd to be N # # There may be many input file specs. File names from the input specs # are concatenated in order on the command line. # There may be at most one of the OUT-, ERR-, and EXIT-keyed specs. # If the OUT-(or ERR)-keyed hash ref is omitted, then expect no output # on stdout (or stderr). # If the EXIT-keyed one is omitted, then expect the exit status to be zero. # FIXME: Make sure that no junkfile is also listed as a # non-junkfile (i.e. with undef for contents) sub _shell_quote ($) { my ($string) = @_; $string =~ s/\'/\'\\\'\'/g; return "'$string'"; } sub _create_file ($$$$) { my ($program_name, $test_name, $file_name, $data) = @_; my $file; if (defined $file_name) { $file = $file_name; } else { $file = "$test_name.$Global_count"; ++$Global_count; } warn "creating file `$file' with contents `$data'\n" if $debug; # The test spec gave a string. # Write it to a temp file and return tempfile name. my $fh = new FileHandle "> $file"; die "$program_name: $file: $!\n" if ! $fh; print $fh $data; $fh->close || die "$program_name: $file: $!\n"; return $file; } sub _compare_files ($$$$$) { my ($program_name, $test_name, $in_or_out, $actual, $expected) = @_; my $differ = compare ($expected, $actual); if ($differ) { my $info = (defined $in_or_out ? "std$in_or_out " : ''); warn "$program_name: test $test_name: ${info}mismatch, comparing " . "$actual (actual) and $expected (expected)\n"; # Ignore any failure, discard stderr. system "diff -c $actual $expected 2>/dev/null"; } return $differ; } sub _process_file_spec ($$$$$) { my ($program_name, $test_name, $file_spec, $type, $junk_files) = @_; my ($file_name, $contents); if (!ref $file_spec) { ($file_name, $contents) = (undef, $file_spec); } elsif (ref $file_spec eq 'HASH') { my $n = keys %$file_spec; die "$program_name: $test_name: $type spec has $n elements --" . " expected 1\n" if $n != 1; ($file_name, $contents) = each %$file_spec; # This happens for the AUX hash in an io_spec like this: # {CMP=> ['zy123utsrqponmlkji', {'@AUX@'=> undef}]}, defined $contents or return $file_name; } else { die "$program_name: $test_name: invalid RHS in $type-spec\n" } my $is_junk_file = (! defined $file_name || (($type eq 'IN' || $type eq 'AUX' || $type eq 'CMP') && defined $contents)); my $file = _create_file ($program_name, $test_name, $file_name, $contents); if ($is_junk_file) { push @$junk_files, $file } else { # FIXME: put $srcdir in here somewhere warn "$program_name: $test_name: specified file `$file' does" . " not exist\n" if ! -f "$srcdir/$file"; } return $file; } sub _at_replace ($$) { my ($map, $s) = @_; foreach my $eo (qw (AUX OUT ERR)) { my $f = $map->{$eo}; $f and $s =~ /\@$eo\@/ and $s =~ s/\@$eo\@/$f/g; } return $s; } # FIXME: cleanup on interrupt # FIXME: extract `do_1_test' function # FIXME: having to include $program_name here is an expedient kludge. # Library code doesn't `die'. sub run_tests ($$$$$) { my ($program_name, $prog, $t_spec, $save_temps, $verbose) = @_; # Warn about empty t_spec. # FIXME # Remove all temp files upon interrupt. # FIXME # Verify that test names are distinct. my $bad_test_name = 0; my %seen; my $t; foreach $t (@$t_spec) { my $test_name = $t->[0]; if ($seen{$test_name}) { warn "$program_name: $test_name: duplicate test name\n"; $bad_test_name = 1; } $seen{$test_name} = 1; # The test name may be no longer than 12 bytes, # so that we can add a two-byte suffix without exceeding # the maximum of 14 imposed on some old file systems. if (14 < (length $test_name) + 2) { warn "$program_name: $test_name: test name is too long (> 12)\n"; $bad_test_name = 1; } } return 1 if $bad_test_name; # FIXME check exit status system ($prog, '--version') if $verbose; my @junk_files; my $fail = 0; foreach $t (@$t_spec) { my @post_compare; my $test_name = shift @$t; my $expect = {}; my ($pre, $post); # FIXME: maybe don't reset this. $Global_count = 1; my @args; my $io_spec; my %seen_type; foreach $io_spec (@$t) { if (!ref $io_spec) { push @args, $io_spec; next; } die "$program_name: $test_name: invalid test spec\n" if ref $io_spec ne 'HASH'; my $n = keys %$io_spec; die "$program_name: $test_name: spec has $n elements --" . " expected 1\n" if $n != 1; my ($type, $val) = each %$io_spec; die "$program_name: $test_name: invalid key `$type' in test spec\n" if ! $Types{$type}; # Make sure there's no more than one of OUT, ERR, EXIT. die "$program_name: $test_name: more than one $type spec\n" if $Zero_one_type{$type} and $seen_type{$type}++; if ($type eq 'PRE' or $type eq 'POST') { $expect->{$type} = $val; next; } if ($type eq 'CMP') { my $t = ref $val; $t && $t eq 'ARRAY' or die "$program_name: $test_name: invalid CMP spec\n"; @$val == 2 or die "$program_name: $test_name: invalid CMP list; must have" . " exactly 2 elements\n"; my @cmp_files; foreach my $e (@$val) { my $r = ref $e; $r && $r ne 'HASH' and die "$program_name: $test_name: invalid element ($r)" . " in CMP list; only scalars and hash references " . "are allowed\n"; if ($r && $r eq 'HASH') { my $n = keys %$e; $n == 1 or die "$program_name: $test_name: CMP spec has $n " . "elements -- expected 1\n"; # Replace any `@AUX@' in the key of %$e. my ($ff, $val) = each %$e; my $new_ff = _at_replace $expect, $ff; if ($new_ff ne $ff) { $e->{$new_ff} = $val; delete $e->{$ff}; } } my $cmp_file = _process_file_spec ($program_name, $test_name, $e, $type, \@junk_files); push @cmp_files, $cmp_file; } push @post_compare, [@cmp_files]; $expect->{$type} = $val; next; } if ($type eq 'EXIT') { die "$program_name: $test_name: invalid EXIT code\n" if $val !~ /^\d+$/; # FIXME: make sure $data is numeric $expect->{EXIT} = $val; next; } if ($type =~ /^(OUT|ERR)_SUBST$/) { $expect->{RESULT_SUBST} ||= {}; $expect->{RESULT_SUBST}->{$1} = $val; next; } my $file = _process_file_spec ($program_name, $test_name, $val, $type, \@junk_files); if ($type eq 'IN') { push @args, _shell_quote $file; } elsif ($type eq 'AUX' || $type eq 'OUT' || $type eq 'ERR') { $expect->{$type} = $file; } else { die "$program_name: $test_name: invalid type: $type\n" } } # Expect an exit status of zero if it's not specified. $expect->{EXIT} ||= 0; # Allow ERR to be omitted -- in that case, expect no error output. foreach my $eo (qw (OUT ERR)) { if (!exists $expect->{$eo}) { $expect->{$eo} = _create_file ($program_name, $test_name, undef, ''); push @junk_files, $expect->{$eo}; } } # FIXME: Does it ever make sense to specify a filename *and* contents # in OUT or ERR spec? # FIXME: this is really suboptimal... my @new_args; foreach my $a (@args) { $a = _at_replace $expect, $a; push @new_args, $a; } @args = @new_args; warn "$test_name...\n" if $verbose; &{$expect->{PRE}} if $expect->{PRE}; my %actual; $actual{OUT} = "$test_name.O"; $actual{ERR} = "$test_name.E"; push @junk_files, $actual{OUT}, $actual{ERR}; my @cmd = ($prog, @args, "> $actual{OUT}", "2> $actual{ERR}"); my $cmd_str = join ' ', @cmd; warn "Running command: `$cmd_str'\n" if $debug; my $rc = 0xffff & system $cmd_str; if ($rc == 0xff00) { warn "$program_name: test $test_name failed: command failed:\n" . " `$cmd_str': $!\n"; $fail = 1; goto cleanup; } $rc >>= 8 if $rc > 0x80; if ($expect->{EXIT} != $rc) { warn "$program_name: test $test_name failed: exit status mismatch:" . " expected $expect->{EXIT}, got $rc\n"; $fail = 1; goto cleanup; } foreach my $eo (qw (OUT ERR)) { my $subst_expr = $expect->{RESULT_SUBST}->{$eo}; if (defined $subst_expr) { my $out = $actual{$eo}; my $orig = "$out.orig"; # Move $out aside (to $orig), then then recreate $out # by transforming each line of $orig via $subst_expr. rename $out, $orig or (warn "$program_name: cannot rename $out to $orig: $!\n"), $fail = 1, next; open IN, $orig or (warn "$program_name: cannot open $orig for reading: $!\n"), $fail = 1, (unlink $orig), next; unlink $orig or (warn "$program_name: cannot unlink $orig: $!\n"), $fail = 1; open OUT, ">$out" or (warn "$program_name: cannot open $out for writing: $!\n"), $fail = 1, next; while (defined (my $line = )) { eval "\$_ = \$line; $subst_expr; \$line = \$_"; print OUT $line; } close IN; close OUT or (warn "$program_name: failed to write $out: $!\n"), $fail = 1, next; } my $eo_lower = lc $eo; _compare_files ($program_name, $test_name, $eo_lower, $actual{$eo}, $expect->{$eo}) and $fail = 1; } foreach my $pair (@post_compare) { my ($expected, $actual) = @$pair; _compare_files $program_name, $test_name, undef, $actual, $expected and $fail = 1; } cleanup: &{$expect->{POST}} if $expect->{POST}; } # FIXME: maybe unlink files inside the big foreach loop? unlink @junk_files if ! $save_temps; return $fail; } ## package return 1;