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wget/tests/WgetTests.pm

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Perl
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package WgetTest;
use strict;
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use warnings;
our $VERSION = 0.01;
use Carp;
use Cwd;
use English qw(-no_match_vars);
use File::Path;
use IO::Handle;
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use POSIX qw(locale_h);
use locale;
our $WGETPATH = '../src/wget';
our $VALGRIND_SUPP_FILE = Cwd::getcwd();
if (defined $ENV{'srcdir'}) {
$VALGRIND_SUPP_FILE = $VALGRIND_SUPP_FILE
. "/" . $ENV{'srcdir'};
}
$VALGRIND_SUPP_FILE = $VALGRIND_SUPP_FILE . '/valgrind-suppressions';
my @unexpected_downloads = ();
{
my %_attr_data = ( # DEFAULT
_cmdline => q{},
_workdir => Cwd::getcwd(),
_errcode => 0,
_existing => {},
_input => {},
_name => $PROGRAM_NAME,
_output => {},
_server_behavior => {},
);
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sub _default_for
{
my ($self, $attr) = @_;
return $_attr_data{$attr};
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}
sub _standard_keys
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{
return keys %_attr_data;
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}
}
sub new
{
my ($caller, %args) = @_;
my $caller_is_obj = ref $caller;
my $class = $caller_is_obj || $caller;
#print STDERR "class = ", $class, "\n";
#print STDERR "_attr_data {workdir} = ", $WgetTest::_attr_data{_workdir}, "\n";
my $self = bless {}, $class;
for my $attrname ($self->_standard_keys())
{
#print STDERR "attrname = ", $attrname, " value = ";
my ($argname) = ($attrname =~ m/^_(.*)/msx);
if (exists $args{$argname})
{
#printf STDERR "Setting up $attrname\n";
$self->{$attrname} = $args{$argname};
}
elsif ($caller_is_obj)
{
#printf STDERR "Copying $attrname\n";
$self->{$attrname} = $caller->{$attrname};
}
else
{
#printf STDERR "Using default for $attrname\n";
$self->{$attrname} = $self->_default_for($attrname);
}
#print STDERR $attrname, '=', $self->{$attrname}, "\n";
}
#printf STDERR "_workdir default = ", $self->_default_for("_workdir");
return $self;
}
sub run
{
my $self = shift;
my $result_message = "Test successful.\n";
my $errcode;
$self->{_name} =~ s{.*/}{}msx; # remove path
$self->{_name} =~ s{[.][^.]+$}{}msx; # remove extension
printf "Running test $self->{_name}\n";
# Setup
my $new_result = $self->_setup();
chdir "$self->{_workdir}/$self->{_name}/input"
or carp "Could not chdir to input directory: $ERRNO";
if (defined $new_result)
{
$result_message = $new_result;
$errcode = 1;
goto cleanup;
}
# Launch server
my $pid = $self->_fork_and_launch_server();
# Call wget
chdir "$self->{_workdir}/$self->{_name}/output"
or carp "Could not chdir to output directory: $ERRNO";
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my $cmdline = $self->{_cmdline};
$cmdline = $self->_substitute_port($cmdline);
$cmdline =
($cmdline =~ m{^/.*}msx) ? $cmdline : "$self->{_workdir}/$cmdline";
my $valgrind = $ENV{VALGRIND_TESTS};
if (!defined $valgrind)
{
$valgrind = 0;
}
my $gdb = $ENV{GDB_TESTS};
if (!defined $gdb)
{
$gdb = 0;
}
if ($gdb == 1)
{
$cmdline = 'gdb --args ' . $cmdline;
}
elsif ($valgrind eq "1")
{
$cmdline =
'valgrind --suppressions=' . $VALGRIND_SUPP_FILE
. ' --error-exitcode=301 --leak-check=yes --track-origins=yes '
. $cmdline;
}
elsif ($valgrind ne q{} && $valgrind ne "0")
{
$cmdline = "$valgrind $cmdline";
}
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print "Calling $cmdline\n";
$errcode = system $cmdline;
$errcode >>= 8; # XXX: should handle abnormal error codes.
# Shutdown server
# if we didn't explicitely kill the server, we would have to call
# waitpid ($pid, 0) here in order to wait for the child process to
# terminate
kill 'TERM', $pid;
# Verify download
if ($errcode != $self->{_errcode})
{
$result_message =
"Test failed: wrong code returned (was: $errcode, expected: $self->{_errcode})\n";
goto CLEANUP;
}
my $error_str;
if ($error_str = $self->_verify_download())
{
$result_message = $error_str;
}
CLEANUP:
$self->_cleanup();
print $result_message;
return $errcode != $self->{_errcode} || ($error_str ? 1 : 0);
}
sub _setup
{
my $self = shift;
chdir $self->{_workdir}
or carp "Could not chdir into $self->{_workdir}: $ERRNO";
# Create temporary directory
mkdir $self->{_name} or carp "Could not mkdir '$self->{_name}': $ERRNO";
chdir $self->{_name}
or carp "Could not chdir into '$self->{_name}': $ERRNO";
mkdir 'input' or carp "Could not mkdir 'input' $ERRNO";
mkdir 'output' or carp "Could not mkdir 'output': $ERRNO";
# Setup existing files
chdir 'output' or carp "Could not chdir into 'output': $ERRNO";
for my $filename (keys %{$self->{_existing}})
{
open my $fh, '>', $filename
or return "Test failed: cannot open pre-existing file $filename\n";
my $file = $self->{_existing}->{$filename};
print {$fh} $file->{content}
or return "Test failed: cannot write pre-existing file $filename\n";
close $fh or carp $ERRNO;
if (exists($file->{timestamp}))
{
utime $file->{timestamp}, $file->{timestamp}, $filename
or return
"Test failed: cannot set timestamp on pre-existing file $filename\n";
}
}
chdir '../input' or carp "Cannot chdir into '../input': $ERRNO";
$self->_setup_server();
chdir $self->{_workdir}
or carp "Cannot chdir into '$self->{_workdir}': $ERRNO";
return;
}
sub _cleanup
{
my $self = shift;
chdir $self->{_workdir}
or carp "Could not chdir into '$self->{_workdir}': $ERRNO";
if (!$ENV{WGET_TEST_NO_CLEANUP})
{
File::Path::rmtree($self->{_name});
}
return 1;
}
# not a method
sub quotechar
{
my $c = ord shift;
if ($c >= 0x7 && $c <= 0xD)
{
return q{\\} . qw(a b t n v f r) [$c - 0x7];
}
else
{
return sprintf '\\x%02x', $c;
}
}
# not a method
sub _show_diff
{
my ($expected, $actual) = @_;
my $SNIPPET_SIZE = 10;
my $str = q{};
my $explen = length $expected;
my $actlen = length $actual;
if ($explen != $actlen)
{
$str .= "Sizes don't match: expected = $explen, actual = $actlen\n";
}
my $min = $explen <= $actlen ? $explen : $actlen;
my $line = 1;
my $col = 1;
my $i = 0;
while ( $i < $min )
{
last if substr($expected, $i, 1) ne substr $actual, $i, 1;
if (substr($expected, $i, 1) eq "\n")
{
$line++;
$col = 0;
}
else
{
$col++;
}
$i++;
}
my $snip_start = $i - ($SNIPPET_SIZE / 2);
if ($snip_start < 0)
{
$SNIPPET_SIZE += $snip_start; # Take it from the end.
$snip_start = 0;
}
my $exp_snip = substr $expected, $snip_start, $SNIPPET_SIZE;
my $act_snip = substr $actual, $snip_start, $SNIPPET_SIZE;
$exp_snip =~ s/[^[:print:]]/ quotechar($&) /gemsx;
$act_snip =~ s/[^[:print:]]/ quotechar($&) /gemsx;
$str .= "Mismatch at line $line, col $col:\n";
$str .= " $exp_snip\n";
$str .= " $act_snip\n";
return $str;
}
sub _verify_download
{
my $self = shift;
chdir "$self->{_workdir}/$self->{_name}/output"
or carp "Could not chdir into output directory: $ERRNO";
# use slurp mode to read file content
my $old_input_record_separator = $INPUT_RECORD_SEPARATOR;
local $INPUT_RECORD_SEPARATOR = undef;
while (my ($filename, $filedata) = each %{$self->{_output}})
{
open my $fh, '<', $filename
or return "Test failed: file $filename not downloaded\n";
my $content = <$fh>;
close $fh or carp $ERRNO;
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my $expected_content = $filedata->{'content'};
$expected_content = $self->_substitute_port($expected_content);
if ($content ne $expected_content)
{
return "Test failed: wrong content for file $filename\n"
. _show_diff($expected_content, $content);
}
if (exists($filedata->{'timestamp'}))
{
my (
$dev, $ino, $mode, $nlink, $uid,
$gid, $rdev, $size, $atime, $mtime,
$ctime, $blksize, $blocks
)
= stat $filename;
$mtime == $filedata->{'timestamp'}
or return "Test failed: wrong timestamp for file $filename: expected = $filedata->{'timestamp'}, actual = $mtime\n";
}
}
local $INPUT_RECORD_SEPARATOR = $old_input_record_separator;
# make sure no unexpected files were downloaded
chdir "$self->{_workdir}/$self->{_name}/output"
or carp "Could not change into output directory: $ERRNO";
__dir_walk(
q{.},
sub {
if (!(exists $self->{_output}{$_[0]} || $self->{_existing}{$_[0]}))
{
push @unexpected_downloads, $_[0];
}
},
sub { shift; return @_ }
);
if (@unexpected_downloads)
{
return 'Test failed: unexpected downloaded files [' . join ', ',
@unexpected_downloads . "]\n";
}
return q{};
}
sub __dir_walk
{
my ($top, $filefunc, $dirfunc) = @_;
my $DIR;
if (-d $top)
{
my $file;
if (!opendir $DIR, $top)
{
warn "Couldn't open directory $DIR: $ERRNO; skipping.\n";
return;
}
my @results;
while ($file = readdir $DIR)
{
next if $file eq q{.} || $file eq q{..};
my $nextdir = $top eq q{.} ? $file : "$top/$file";
push @results, __dir_walk($nextdir, $filefunc, $dirfunc);
}
return $dirfunc ? $dirfunc->($top, @results) : ();
}
else
{
return $filefunc ? $filefunc->($top) : ();
}
}
sub _fork_and_launch_server
{
my $self = shift;
pipe FROM_CHILD, TO_PARENT or croak 'Cannot create pipe!';
TO_PARENT->autoflush();
my $pid = fork;
if ($pid < 0)
{
carp 'Cannot fork';
}
elsif ($pid == 0)
{
# child
close FROM_CHILD or carp $ERRNO;
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# FTP Server has to start with english locale due to use of strftime month names in LIST command
setlocale(LC_ALL, 'C');
$self->_launch_server(
sub {
print {*TO_PARENT} "SYNC\n";
close TO_PARENT or carp $ERRNO;
}
);
}
else
{
# father
close TO_PARENT or carp $ERRNO;
chomp(my $line = <FROM_CHILD>);
close FROM_CHILD or carp $ERRNO;
}
return $pid;
}
1;
# vim: et ts=4 sw=4