3 use Test::More tests => 32;
4 # Before `make install' is performed this script should be runnable with
5 # `make test'. After `make install' it should work as `perl test.pl'
7 ######################### We start with some black magic to print on failure.
9 # Change 1..1 below to 1..last_test_to_print .
10 # (It may become useful if the test is moved to ./t subdirectory.)
11 use lib qw(blib/lib blib/arch);
13 BEGIN { require 't/testtools.pl'; }
14 BEGIN { use_ok('Imager', ':all') }
15 init_log("testout/t102png.log",1);
17 i_has_format("png") && print "# has png\n";
19 my $green = i_color_new(0, 255, 0, 255);
20 my $blue = i_color_new(0, 0, 255, 255);
21 my $red = i_color_new(255, 0, 0, 255);
23 my $img = Imager::ImgRaw::new(150, 150, 3);
25 i_box_filled($img, 70, 25, 130, 125, $green);
26 i_box_filled($img, 20, 25, 80, 125, $blue);
27 i_arc($img, 75, 75, 30, 0, 361, $red);
28 i_conv($img,[0.1, 0.2, 0.4, 0.2, 0.1]);
30 my $timg = Imager::ImgRaw::new(20, 20, 4);
31 my $trans = i_color_new(255, 0, 0, 127);
32 i_box_filled($timg, 0, 0, 20, 20, $green);
33 i_box_filled($timg, 2, 2, 18, 18, $trans);
35 if (!i_has_format("png")) {
39 ok(!$im->read(file=>"testimg/palette.png"), "should fail to read png");
40 is($im->errstr, "format 'png' not supported", "check no png message");
41 $im = Imager->new(xsize=>2, ysize=>2);
42 ok(!$im->write(file=>"testout/nopng.png"), "should fail to write png");
43 is($im->errstr, 'format not supported', "check no png message");
44 skip("no png support", 27);
47 Imager::i_tags_add($img, "i_xres", 0, "300", 0);
48 Imager::i_tags_add($img, "i_yres", 0, undef, 200);
49 # the following confuses the GIMP
50 #Imager::i_tags_add($img, "i_aspect_only", 0, undef, 1);
51 open(FH,">testout/t102.png") || die "cannot open testout/t102.png for writing\n";
53 my $IO = Imager::io_new_fd(fileno(FH));
54 ok(i_writepng_wiol($img, $IO), "write");
57 open(FH,"testout/t102.png") || die "cannot open testout/t102.png\n";
59 $IO = Imager::io_new_fd(fileno(FH));
60 my $cmpimg = i_readpng_wiol($IO, -1);
62 ok($cmpimg, "read png");
64 print "# png average mean square pixel difference: ",sqrt(i_img_diff($img,$cmpimg))/150*150,"\n";
65 is(i_img_diff($img, $cmpimg), 0, "compare saved and original images");
67 my %tags = map { Imager::i_tags_get($cmpimg, $_) }
68 0..Imager::i_tags_count($cmpimg) - 1;
69 ok(abs($tags{i_xres} - 300) < 1, "i_xres: $tags{i_xres}");
70 ok(abs($tags{i_yres} - 200) < 1, "i_yres: $tags{i_yres}");
71 is($tags{i_format}, "png", "i_format: $tags{i_format}");
73 open FH, "> testout/t102_trans.png"
74 or die "Cannot open testout/t102_trans.png: $!";
76 $IO = Imager::io_new_fd(fileno(FH));
77 ok(i_writepng_wiol($timg, $IO), "write tranparent");
80 open FH,"testout/t102_trans.png"
81 or die "cannot open testout/t102_trans.png\n";
83 $IO = Imager::io_new_fd(fileno(FH));
84 $cmpimg = i_readpng_wiol($IO, -1);
85 ok($cmpimg, "read transparent");
88 print "# png average mean square pixel difference: ",sqrt(i_img_diff($timg,$cmpimg))/150*150,"\n";
89 is(i_img_diff($timg, $cmpimg), 0, "compare saved and original transparent");
92 # png.c 1.1 would produce an incorrect image when loading images with
93 # less than 8 bits/pixel with a transparent palette entry
94 open FH, "< testimg/palette.png"
95 or die "cannot open testimg/palette.png: $!\n";
97 $IO = Imager::io_new_fd(fileno(FH));
98 # 1.1 may segfault here (it does with libefence)
99 my $pimg = i_readpng_wiol($IO,-1);
100 ok($pimg, "read transparent paletted image");
103 open FH, "< testimg/palette_out.png"
104 or die "cannot open testimg/palette_out.png: $!\n";
106 $IO = Imager::io_new_fd(fileno(FH));
107 my $poimg = i_readpng_wiol($IO, -1);
108 ok($poimg, "read palette_out image");
110 if (!is(i_img_diff($pimg, $poimg), 0, "images the same")) {
112 # this tests a bug in Imager's png.c v1.1
113 # if also tickles a bug in libpng before 1.0.5, so you may need to
118 { # check file limits are checked
119 my $limit_file = "testout/t102.png";
120 ok(Imager->set_file_limits(reset=>1, width=>149), "set width limit 149");
121 my $im = Imager->new;
122 ok(!$im->read(file=>$limit_file),
123 "should fail read due to size limits");
124 print "# ",$im->errstr,"\n";
125 like($im->errstr, qr/image width/, "check message");
127 ok(Imager->set_file_limits(reset=>1, height=>149), "set height limit 149");
128 ok(!$im->read(file=>$limit_file),
129 "should fail read due to size limits");
130 print "# ",$im->errstr,"\n";
131 like($im->errstr, qr/image height/, "check message");
133 ok(Imager->set_file_limits(reset=>1, width=>150), "set width limit 150");
134 ok($im->read(file=>$limit_file),
135 "should succeed - just inside width limit");
136 ok(Imager->set_file_limits(reset=>1, height=>150), "set height limit 150");
137 ok($im->read(file=>$limit_file),
138 "should succeed - just inside height limit");
140 # 150 x 150 x 3 channel image uses 67500 bytes
141 ok(Imager->set_file_limits(reset=>1, bytes=>67499),
142 "set bytes limit 67499");
143 ok(!$im->read(file=>$limit_file),
144 "should fail - too many bytes");
145 print "# ",$im->errstr,"\n";
146 like($im->errstr, qr/storage size/, "check error message");
147 ok(Imager->set_file_limits(reset=>1, bytes=>67500),
148 "set bytes limit 67500");
149 ok($im->read(file=>$limit_file),
150 "should succeed - just inside bytes limit");
151 Imager->set_file_limits(reset=>1);
154 { # check if the read_multi fallback works
155 my @imgs = Imager->read_multi(file => 'testout/t102.png');
156 is(@imgs, 1, "check the image was loaded");
157 is(i_img_diff($img, $imgs[0]), 0, "check image matches");
159 # check the write_multi fallback
160 ok(Imager->write_multi({ file => 'testout/t102m.png', type => 'png' },
162 'test write_multi() callback');
164 # check that we fail if we actually write 2
165 ok(!Imager->write_multi({ file => 'testout/t102m.png', type => 'png' },
167 'test write_multi() callback failure');