176 lines
6.2 KiB
Perl
176 lines
6.2 KiB
Perl
#!/usr/bin/perl
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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use strict;
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use warnings;
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use Test::More tests => 48;
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use Test::Dpkg qw(:paths);
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use IPC::Cmd qw(can_run);
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use_ok('Dpkg::Compression');
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use_ok('Dpkg::Compression::FileHandle');
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my $tmpdir = test_get_temp_path();
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my @lines = ("One\n", "Two\n", "Three\n");
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my $fh;
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my $have_gunzip = can_run('gunzip');
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sub test_write {
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my ($filename, $check_result) = @_;
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$fh = Dpkg::Compression::FileHandle->new();
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open $fh, '>', $filename or die 'open failed';
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print { $fh } $lines[0];
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syswrite($fh, $lines[1]);
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printf { $fh } '%s', $lines[2];
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close $fh or die 'close failed';
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$check_result->($filename, 'std functions');
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unlink $filename or die "cannot unlink $filename";
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$fh = Dpkg::Compression::FileHandle->new();
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$fh->open($filename, 'w');
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$fh->print($lines[0]);
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$fh->write($lines[1], length($lines[1]));
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$fh->printf('%s', $lines[2]);
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$fh->close() or die 'close failed';
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$check_result->($filename, 'IO::Handle methods');
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}
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sub check_uncompressed {
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my ($filename, $method) = @_;
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open(my $read_fh, '<', $filename) or die "cannot read $filename";
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my @read = <$read_fh>;
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close $read_fh or die 'cannot close';
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is_deeply(\@lines, \@read, "$filename correctly written ($method)");
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}
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sub check_compressed {
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my ($filename, $method) = @_;
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open my $read_fh, '-|', 'gunzip', '-c', "$tmpdir/myfile.gz"
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or die 'cannot fork zcat';
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my @read = <$read_fh>;
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close $read_fh or die 'cannot close';
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is_deeply(\@lines, \@read, "$filename correctly written ($method)");
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}
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sub test_read {
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my $filename = shift;
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$fh = Dpkg::Compression::FileHandle->new();
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open($fh, '<', $filename) or die 'open failed';
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my @read = <$fh>;
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close $fh or die 'close failed';
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is_deeply(\@lines, \@read, "$filename correctly read (std functions)");
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@read = ();
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$fh = Dpkg::Compression::FileHandle->new();
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$fh->open($filename, 'r') or die 'open failed';
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@read = $fh->getlines();
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$fh->close() or die 'close failed';
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is_deeply(\@lines, \@read, "$filename correctly read (IO::Handle methods)");
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}
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# Check compression properties.
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my @compressors = compression_get_list();
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is_deeply([ sort @compressors ] , [ qw(bzip2 gzip lzma xz) ],
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'supported compressors');
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is(compression_get_default(), 'xz', 'default compressor is xz');
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eval {
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compression_set_default('invented-compressor');
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};
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ok($@, 'cannot set compressor to an unsupported name');
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is(compression_get_default(), 'xz', 'default compressor is still xz');
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compression_set_default('gzip');
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is(compression_get_default(), 'gzip', 'default compressor changed to gzip');
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compression_set_default('xz');
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is(compression_get_default(), 'xz', 'default compressor reset to xz');
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ok(compression_is_supported('gzip'), 'gzip is supported');
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ok(compression_is_supported('xz'), 'xz is supported');
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ok(compression_is_supported('bzip2'), 'bzip2 is supported');
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ok(compression_is_supported('lzma'), 'lzma is supported');
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is(compression_guess_from_filename('filename'), undef,
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'compressor <none> guessed from "filename"');
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is(compression_guess_from_filename('filename.gz'), 'gzip',
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'compressor <none> guessed from "filename"');
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is(compression_guess_from_filename('filename.xz'), 'xz',
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'compressor <none> guessed from "filename"');
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is(compression_guess_from_filename('filename.bz2'), 'bzip2',
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'compressor <none> guessed from "filename"');
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is(compression_guess_from_filename('filename.lzma'), 'lzma',
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'compressor <none> guessed from "filename"');
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is(compression_get_file_extension('gzip'), 'gz', 'gzip file ext');
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is(compression_get_file_extension('xz'), 'xz', 'xz file ext');
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is(compression_get_file_extension('bzip2'), 'bz2', 'bzip2 file ext');
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is(compression_get_file_extension('lzma'), 'lzma', 'lzma file ext');
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is(compression_get_level('gzip'), 9, 'gzip level is 9');
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compression_set_level('gzip', 1);
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is(compression_get_level('gzip'), 1, 'gzip level is now 1');
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compression_set_level('gzip');
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is(compression_get_level('gzip'), 9, 'gzip level is back to 9');
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is(compression_get_level('xz'), 6, 'xz level is 6');
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is(compression_get_level('bzip2'), 9, 'bzip2 level is 9');
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is(compression_get_level('lzma'), 6, 'lzma level is 6');
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my $ext_regex = compression_get_file_extension_regex();
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ok('filename.gz' =~ m/\.$ext_regex$/, '.gz matches regex');
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ok('filename.xz' =~ m/\.$ext_regex$/, '.xz matches regex');
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ok('filename.bz2' =~ m/\.$ext_regex$/, '.bz2 matches regex');
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ok('filename.lzma' =~ m/\.$ext_regex$/, '.lzma matches regex');
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# Test changing the default compression levels
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my $old_level = compression_get_default_level();
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compression_set_default_level(1);
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is(compression_get_default_level(), 1, 'change default compression level');
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compression_set_default_level(5);
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is(compression_get_default_level(), 5, 'change default compression level');
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compression_set_default_level(undef);
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is(compression_get_default_level(), $old_level, 'reset default compression level');
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ok(! compression_is_valid_level(0), 'compression 0 is invalid');
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ok(compression_is_valid_level(1), 'compression 1 is valid');
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ok(compression_is_valid_level(5), 'compression 5 is valid');
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ok(compression_is_valid_level(9), 'compression 9 is valid');
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ok(compression_is_valid_level('fast'), 'compression fast is valid');
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ok(compression_is_valid_level('best'), 'compression best is valid');
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# Test write on uncompressed file
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test_write("$tmpdir/myfile", \&check_uncompressed);
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SKIP: {
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skip 'gunzip not available', 1 if not $have_gunzip;
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# Test write on compressed file
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test_write("$tmpdir/myfile.gz", \&check_compressed);
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}
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# Test read on uncompressed file
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test_read("$tmpdir/myfile");
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# Test read on compressed file
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test_read("$tmpdir/myfile.gz");
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