Introduce LaTeX::TikZ::Functor

[perl/modules/LaTeX-TikZ.git] / t / 30-functor.t

diff --git a/t/30-functor.t b/t/30-functor.t
new file mode 100644 (file)
index 0000000..347b539
--- /dev/null
+++ b/t/30-functor.t
@@ -0,0 +1,121 @@
+#!perl
+
+use strict;
+use warnings;
+
+use Test::More tests => 4 + 2 * 4;
+
+use LaTeX::TikZ;
+
+my $tikz = Tikz->formatter(
+ format => '%d',
+);
+
+sub check {
+ my ($set, $desc, $exp) = @_;
+
+ local $Test::Builder::Level = $Test::Builder::Level + 1;
+
+ my ($head, $decl, $body) = eval {
+  $tikz->render(ref $set eq 'ARRAY' ? @$set : $set);
+ };
+ is $@, '', "$desc: no error";
+
+ unless (ref $exp eq 'ARRAY') {
+  $exp = [ split /\n/, $exp ];
+ }
+ unshift @$exp, '\begin{tikzpicture}';
+ push    @$exp, '\end{tikzpicture}';
+
+ is_deeply $body, $exp, $desc;
+}
+
+my $translate = eval {
+ Tikz->functor(
+  'LaTeX::TikZ::Set::Point' => sub {
+   my ($functor, $set, $v) = @_;
+
+   $set->new(
+    point => [
+     $set->x + $v->x,
+     $set->y + $v->y,
+    ],
+   );
+  },
+ );
+};
+is $@, '', 'creating a translator doesn\'t croak';
+
+my $seq = Tikz->seq(
+                 Tikz->point,
+                 Tikz->raw('foo'),
+                 Tikz->point(2),
+                 Tikz->line(-1 => 3)
+                     ->clip(Tikz->circle(1, 1))
+                )
+              ->clip(Tikz->rectangle([0, -1] => [2, 3]));
+
+my $seq2 = eval {
+ $seq->$translate(Tikz->point(-1, 1));
+};
+is $@, '', 'translating a sequence doesn\'t croak';
+
+check $seq, 'the original sequence', <<'RES';
+\begin{scope}
+\clip (0cm,-1cm) rectangle (2cm,3cm) ;
+\draw (0cm,0cm) ;
+\draw foo ;
+\draw (2cm,0cm) ;
+\begin{scope}
+\clip (1cm,0cm) circle (1cm) ;
+\draw (-1cm,0cm) -- (3cm,0cm) ;
+\end{scope}
+\end{scope}
+RES
+
+check $seq2, 'the translated sequence', <<'RES';
+\begin{scope}
+\clip (-1cm,0cm) rectangle (1cm,4cm) ;
+\draw (-1cm,1cm) ;
+\draw foo ;
+\draw (1cm,1cm) ;
+\begin{scope}
+\clip (0cm,1cm) circle (1cm) ;
+\draw (-2cm,1cm) -- (2cm,1cm) ;
+\end{scope}
+\end{scope}
+RES
+
+my $strip = eval {
+ Tikz->functor(
+  'LaTeX::TikZ::Mod' => sub { return },
+ );
+};
+is $@, '', 'creating a stripper doesn\'t croak';
+
+$_->mod(Tikz->color('red')) for $seq2->kids;
+
+my $seq3 = eval {
+ $seq2->$strip;
+};
+is $@, '', 'stripping a sequence doesn\'t croak';
+
+check $seq2, 'the original sequence', <<'RES';
+\begin{scope} [color=red]
+\clip (-1cm,0cm) rectangle (1cm,4cm) ;
+\draw (-1cm,1cm) ;
+\draw foo ;
+\draw (1cm,1cm) ;
+\begin{scope}
+\clip (0cm,1cm) circle (1cm) ;
+\draw (-2cm,1cm) -- (2cm,1cm) ;
+\end{scope}
+\end{scope}
+RES
+
+check $seq3, 'the stripped sequence', <<'RES';
+\draw (-1cm,1cm) ;
+\draw foo ;
+\draw (1cm,1cm) ;
+\draw (-2cm,1cm) -- (2cm,1cm) ;
+RES