/
t40scale.t
143 lines (122 loc) · 4.88 KB
/
t40scale.t
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
#!perl -w
use strict;
use lib 't';
use Test::More tests => 68;
BEGIN { use_ok(Imager=>':all') }
require "t/testtools.pl";
Imager::init('log'=>'testout/t40scale.log');
my $img=Imager->new();
ok($img->open(file=>'testimg/scale.ppm',type=>'pnm'),
"load test image") or print "# ",$img->errstr,"\n";
my $scaleimg=$img->scale(scalefactor=>0.25)
or print "# ",$img->errstr,"\n";
ok($scaleimg, "scale it (good mode)");
ok($scaleimg->write(file=>'testout/t40scale1.ppm',type=>'pnm'),
"save scaled image") or print "# ",$img->errstr,"\n";
$scaleimg=$img->scale(scalefactor=>0.25,qtype=>'preview');
ok($scaleimg, "scale it (preview)") or print "# ",$img->errstr,"\n";
ok($scaleimg->write(file=>'testout/t40scale2.ppm',type=>'pnm'),
"write preview scaled image") or print "# ",$img->errstr,"\n";
{
# check for a warning when scale() is called in void context
my $warning;
local $SIG{__WARN__} =
sub {
$warning = "@_";
my $printed = $warning;
$printed =~ s/\n$//;
$printed =~ s/\n/\n\#/g;
print "# ",$printed, "\n";
};
$img->scale(scalefactor=>0.25);
cmp_ok($warning, '=~', qr/void/, "check warning");
cmp_ok($warning, '=~', qr/t40scale\.t/, "check filename");
$warning = '';
$img->scaleX(scalefactor=>0.25);
cmp_ok($warning, '=~', qr/void/, "check warning");
cmp_ok($warning, '=~', qr/t40scale\.t/, "check filename");
$warning = '';
$img->scaleY(scalefactor=>0.25);
cmp_ok($warning, '=~', qr/void/, "check warning");
cmp_ok($warning, '=~', qr/t40scale\.t/, "check filename");
}
{ # https://rt.cpan.org/Ticket/Display.html?id=7467
# segfault in Imager 0.43
# make sure scale() doesn't let us make an image zero pixels high or wide
# it does this by making the given axis as least 1 pixel high
my $out = $img->scale(scalefactor=>0.00001);
is($out->getwidth, 1, "min scale width");
is($out->getheight, 1, "min scale height");
$out = $img->scale(scalefactor=>0.00001, qtype => 'preview');
is($out->getwidth, 1, "min scale width (preview)");
is($out->getheight, 1, "min scale height (preview)");
}
{ # error handling - NULL image
my $im = Imager->new;
ok(!$im->scale(scalefactor => 0.5), "try to scale empty image");
is($im->errstr, "empty input image", "check error message");
# scaleX/scaleY
ok(!$im->scaleX(scalefactor => 0.5), "try to scaleX empty image");
is($im->errstr, "empty input image", "check error message");
ok(!$im->scaleY(scalefactor => 0.5), "try to scaleY empty image");
is($im->errstr, "empty input image", "check error message");
}
{ # invalid qtype value
my $im = Imager->new(xsize => 100, ysize => 100);
ok(!$im->scale(scalefactor => 0.5, qtype=>'unknown'), "unknown qtype");
is($im->errstr, "invalid value for qtype parameter", "check error message");
# invalid type value
ok(!$im->scale(xpixels => 10, ypixels=>50, type=>"unknown"), "unknown type");
is($im->errstr, "invalid value for type parameter", "check error message");
}
SKIP:
{ # Image::Math::Constrain support
eval "require Image::Math::Constrain;";
$@ and skip "optional module Image::Math::Constrain not installed", 3;
my $constrain = Image::Math::Constrain->new(20, 100);
my $im = Imager->new(xsize => 160, ysize => 96);
my $result = $im->scale(constrain => $constrain);
ok($result, "successful scale with Image::Math::Constrain");
is($result->getwidth, 20, "check result width");
is($result->getheight, 12, "check result height");
}
{ # scale size checks
my $im = Imager->new(xsize => 160, ysize => 96); # some random size
scale_test($im, 'scale', 80, 48, "48 x 48 def type",
xpixels => 48, ypixels => 48);
scale_test($im, 'scale', 80, 48, "48 x 48 max type",
xpixels => 48, ypixels => 48, type => 'max');
scale_test($im, 'scale', 80, 48, "80 x 80 min type",
xpixels => 80, ypixels => 80, type => 'min');
scale_test($im, 'scale', 80, 48, "no scale parameters (default to 0.5 scalefactor)");
scale_test($im, 'scale', 120, 72, "0.75 scalefactor",
scalefactor => 0.75);
scale_test($im, 'scale', 80, 48, "80 width",
xpixels => 80);
scale_test($im, 'scale', 120, 72, "72 height",
ypixels => 72);
# scaleX
scale_test($im, 'scaleX', 80, 96, "defaults");
scale_test($im, 'scaleX', 40, 96, "0.25 scalefactor",
scalefactor => 0.25);
scale_test($im, 'scaleX', 120, 96, "pixels 120",
pixels => 120);
# scaleY
scale_test($im, 'scaleY', 160, 48, "defaults");
scale_test($im, 'scaleY', 160, 192, "2.0 scalefactor",
scalefactor => 2.0);
scale_test($im, 'scaleY', 160, 144, "pixels 144",
pixels => 144);
}
sub scale_test {
my ($in, $method, $exp_width, $exp_height, $note, @parms) = @_;
print "# $note: @parms\n";
SKIP:
{
my $scaled = $in->$method(@parms);
ok($scaled, "$method $note")
or skip("failed to scale", 2);
is($scaled->getwidth, $exp_width, "check width");
is($scaled->getheight, $exp_height, "check height");
}
}