use strict;
use File::Path ();
use File::Spec::Functions;
use FindBin ();
use Test::More;
require Test::NoWarnings;
use Image::Scale;
my $gif_version = Image::Scale->gif_version();
my $png_version = Image::Scale->png_version();
if ($gif_version) {
plan tests => 17;
}
else {
plan skip_all => 'Image::Scale not built with giflib/libungif support';
}
my $tmpdir = catdir( $FindBin::Bin, 'tmp' );
if ( -d $tmpdir ) {
File::Path::rmtree($tmpdir);
}
mkdir $tmpdir;
my @types = qw(
transparent
white
interlaced_256
);
my @resizes = qw(
resize_gd_fixed_point
);
# width/height
for my $type ( @types ) {
my $im = Image::Scale->new( _f("${type}.gif") );
is( $im->width, 160, "GIF $type width ok" );
is( $im->height, 120, "GIF $type height ok" );
}
# Normal width resize
SKIP:
{
skip "PNG support not built, skipping file comparison tests", 3 if !$png_version;
for my $resize ( @resizes ) {
for my $type ( @types ) {
my $outfile = _tmp("${type}_${resize}_w100.png");
my $im = Image::Scale->new( _f("${type}.gif") );
$im->$resize( { width => 100 } );
$im->save_png($outfile);
is( _compare( _load($outfile), "${type}_${resize}_w100.png" ), 1, "GIF $type $resize 100 file ok" );
}
}
}
# corrupt file
{
no strict 'subs';
no warnings;
Test::NoWarnings::clear_warnings();
my $im = Image::Scale->new( _f("corrupt.gif") );
# Hide stderr
open OLD_STDERR, '>&', STDERR;
close STDERR;
my $ok = $im->resize_gd_fixed_point( { width => 50 } );
# Restore stderr
open STDERR, '>&', OLD_STDERR;
is( $ok, 0, 'GIF corrupt failed resize ok' );
# Test that the correct warning was output
like( (Test::NoWarnings::warnings())[0]->getMessage, qr/Image::Scale unable to read GIF file/i, 'GIF corrupt error output ok' );
}
# multiple resize calls on same $im object, should throw away previous resize data
SKIP:
{
skip "PNG support not built, skipping file comparison tests", 1 if !$png_version;
my $outfile = _tmp("transparent_multiple_resize_gd_fixed_point.png");
my $im = Image::Scale->new( _f("transparent.gif") );
$im->resize_gd_fixed_point( { width => 50 } );
$im->resize_gd_fixed_point( { width => 100 } );
$im->save_png($outfile);
is( _compare( _load($outfile), "transparent_multiple_resize_gd_fixed_point.png" ), 1, "GIF multiple resize_gd_fixed_point ok" );
}
# resize from GIF in scalar
SKIP:
{
skip "PNG support not built, skipping file comparison tests", 1 if !$png_version;
my $dataref = _load( _f("transparent.gif") );
my $outfile = _tmp("transparent_resize_gd_fixed_point_w100_scalar.png");
my $im = Image::Scale->new($dataref);
$im->resize_gd_fixed_point( { width => 100 } );
$im->save_png($outfile);
is( _compare( _load($outfile), "transparent_resize_gd_fixed_point_w100.png" ), 1, "GIF resize_gd_fixed_point from scalar ok" );
}
# resize multiple from GIF scalar
SKIP:
{
skip "PNG support not built, skipping file comparison tests", 1 if !$png_version;
my $dataref = _load( _f("transparent.gif") );
my $outfile = _tmp("transparent_multiple_resize_gd_fixed_point_w100_scalar.png");
my $im = Image::Scale->new($dataref);
$im->resize_gd_fixed_point( { width => 150 } );
$im->resize_gd_fixed_point( { width => 100 } );
$im->save_png($outfile);
is( _compare( _load($outfile), "transparent_resize_gd_fixed_point_w100.png" ), 1, "GIF resize_gd_fixed_point multiple from scalar ok" );
}
# offset image in MP3 ID3v2 tag
SKIP:
{
my $outfile = _tmp("apic_gd_fixed_point_w100.png");
my $im = Image::Scale->new(
_f('v2.4-apic-gif-318-5169.mp3'),
{ offset => 318, length => 5169 }
);
is( $im->width, 160, 'GIF from offset ID3 tag width ok' );
is( $im->height, 120, 'GIF from offset ID3 tag height ok' );
$im->resize_gd_fixed_point( { width => 100 } );
skip "PNG support not built, skipping file comparison tests", 1 if !$png_version;
$im->save_png($outfile);
is( _compare( _load($outfile), "apic_gd_fixed_point_w100.png" ), 1, "GIF resize_gd_fixed_point from offset ID3 tag ok" );
}
diag("giflib/libungif version: $gif_version");
END {
File::Path::rmtree($tmpdir);
}
sub _f {
return catfile( $FindBin::Bin, 'images', 'gif', shift );
}
sub _tmp {
return catfile( $tmpdir, shift );
}
sub _load {
my $path = shift;
open my $fh, '<', $path or die "Cannot open $path";
binmode $fh;
my $data = do { local $/; <$fh> };
close $fh;
return \$data;
}
sub _compare {
my ( $test, $path ) = @_;
my $ref = _load( catfile( $FindBin::Bin, 'ref', 'gif', $path ) );
return $$ref eq $$test;
}