#!/usr/bin/env perl
require 5.008;
BEGIN { $^W = 1; }
use strict;
use File::Copy;
use Digest::MD5;

chdir("flate") or die "chdir testdir failed: $!\n";

require TestDriver;

cleanup();

my $td = new TestDriver('flate');

cleanup();

open(F, ">farbage") or die;
binmode F;
print F "q" x 10000, "\n";
print F "w" x 10000, "\n";
print F "e" x 10000, "\n";
print F "r" x 10000, "\n";
print F "t" x 10000, "\n";
print F "y" x 10000, "\n";
print F "u" x 10000, "\n";
print F "i" x 10000, "\n";
print F "o" x 10000, "\n";
print F "p" x 10000, "\n";
close(F);

check_file("farbage", "a6449c61db5b0645c0693b7560b77a60");

$td->runtest("run driver",
             {$td->COMMAND => "flate farbage"},,
             {$td->STRING => "bytes written to o3: 100010\ndone\n",
              $td->EXIT_STATUS => 0},
             $td->NORMALIZE_NEWLINES);

check_file("farbage", "a6449c61db5b0645c0693b7560b77a60");

my $size_uncompressed = (stat("farbage"))[7];
my $size_compressed = (stat("farbage.1"))[7];
$td->runtest("compressed is smaller",
             {$td->STRING =>
                  ($size_compressed < $size_uncompressed
                   ? "YES\n" : "$size_compressed $size_uncompressed\n")},
             {$td->STRING => "YES\n"});

$td->runtest("uncompress filter works",
             {$td->FILE => "farbage"},
             {$td->FILE => "farbage.2"});

$td->runtest("double filter works",
             {$td->FILE => "farbage"},
             {$td->FILE => "farbage.3"});

cleanup();

$td->report(6);

sub cleanup
{
    system("rm -f farbage*");
}

sub check_file
{
    my ($file, $sum) = @_;
    open(F, "<$file") or die "open $file";
    my $md5 = new Digest::MD5;
    $md5->addfile(*F);
    close(F);
    my $result = $md5->hexdigest;
    $td->runtest("check $file",
                 {$td->STRING => "$result\n"},
                 {$td->STRING => "$sum\n"});
}