* changed t31tic_color.t to check against different images based on the presence...
[imager-graph.git] / t / t30many_points.t
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1509eee7 1#!perl -w
2use strict;
3use Imager::Graph::Line;
4use lib 't/lib';
5use Imager::Font::Test;
6use Test::More;
7
8-d 'testout'
9 or mkdir "testout", 0700
10 or die "Could not create output directory: $!";
11
12++$|;
13
14my @warned;
15local $SIG{__WARN__} =
16 sub {
17 print STDERR $_[0];
18 push @warned, $_[0]
19 };
20
21
22use Imager qw(:handy);
23
24plan tests => 4;
25
26#my $fontfile = 'ImUgly.ttf';
27#my $font = Imager::Font->new(file=>$fontfile, type => 'ft2', aa=>1)
28# or plan skip_all => "Cannot create font object: ",Imager->errstr,"\n";
29my $font = Imager::Font::Test->new();
30
31my @data = (1 .. 1000);
32my @labels = qw(alpha beta gamma delta epsilon phi gi);
33
34my $line = Imager::Graph::Line->new();
35ok($line, "creating line chart object");
36
37$line->add_data_series(\@data);
38$line->set_labels(\@labels);
39
40my $img1 = $line->draw();
41ok($img1, "drawing line chart");
42
43$img1->write(file=>'testout/t30_points.ppm') or die "Can't save img1: ".$img1->errstr."\n";
44cmpimg($img1, 'testimg/t30_points.ppm', 1);
45
46unless (is(@warned, 0, "should be no warnings")) {
47 diag($_) for @warned;
48}
49
50
51sub cmpimg {
52 my ($img, $file, $limit) = @_;
53
54 $limit ||= 10000;
55
267997be 56 my $cmpimg = Imager->new;
57 $cmpimg->read(file=>$file)
58 or return ok(0, "Cannot read $file: ".$cmpimg->errstr);
59 my $diff = Imager::i_img_diff($img->{IMG}, $cmpimg->{IMG});
60 cmp_ok($diff, '<', $limit, "Comparison to $file ($diff)");
1509eee7 61}