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#!/usr/bin/perl
#
# This program 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 program 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.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
use Test::More tests => 13;
use strict;
use warnings;
use_ok('Dpkg::Compression');
use_ok('Dpkg::Compression::FileHandle');
my $tmpdir = "t.tmp/850_Dpkg_Compression";
mkdir $tmpdir;
my @lines = ("One\n", "Two\n", "Three\n");
my $fh;
sub test_write {
my ($filename, $check_result) = @_;
$fh = Dpkg::Compression::FileHandle->new();
open $fh, ">", $filename or die "open failed";
print $fh $lines[0];
syswrite($fh, $lines[1]);
printf $fh "%s", $lines[2];
close $fh or die "close failed";
&$check_result($filename, "std functions");
unlink $filename or die "cannot unlink $filename";
$fh = Dpkg::Compression::FileHandle->new();
$fh->open($filename, "w");
$fh->print($lines[0]);
$fh->write($lines[1], length($lines[1]));
$fh->printf("%s", $lines[2]);
$fh->close() or die "close failed";
&$check_result($filename, "IO::Handle methods");
}
sub check_uncompressed {
my ($filename, $method) = @_;
open(my $read_fh, "<", $filename) or die "cannot read $filename";
my @read = <$read_fh>;
close $read_fh or die "cannot close";
is_deeply(\@lines, \@read, "$filename correctly written ($method)");
}
sub check_compressed {
my ($filename, $method) = @_;
open(my $read_fh, "-|", "zcat $tmpdir/myfile.gz") or die "cannot fork zcat";
my @read = <$read_fh>;
close $read_fh or die "cannot close";
is_deeply(\@lines, \@read, "$filename correctly written ($method)");
}
sub test_read {
my ($filename) = @_;
$fh = Dpkg::Compression::FileHandle->new();
open($fh, "<", $filename) or die "open failed";
my @read = <$fh>;
close $fh or die "close failed";
is_deeply(\@lines, \@read, "$filename correctly read (std functions)");
@read = ();
$fh = Dpkg::Compression::FileHandle->new();
$fh->open($filename, "r") or die "open failed";
@read = $fh->getlines();
$fh->close() or die "close failed";
is_deeply(\@lines, \@read, "$filename correctly read (IO::Handle methods)");
}
# Test changing the default compression levels
my $old_level = compression_get_default_level();
compression_set_default_level(1);
is(compression_get_default_level(), 1, "change default compression level");
compression_set_default_level(5);
is(compression_get_default_level(), 5, "change default compression level");
compression_set_default_level(undef);
is(compression_get_default_level(), $old_level, "reset default compression level");
# Test write on uncompressed file
test_write("$tmpdir/myfile", \&check_uncompressed);
# Test write on compressed file
test_write("$tmpdir/myfile.gz", \&check_compressed);
# Test read on uncompressed file
test_read("$tmpdir/myfile");
# Test read on compressed file
test_read("$tmpdir/myfile.gz");
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