allow creation and SVG rendering of nonlinear graphs

[scpubgit/stemmatology.git] / t / graph.t

diff --git a/t/graph.t b/t/graph.t
index cae5507..f580465 100644 (file)
--- a/t/graph.t
+++ b/t/graph.t
@@ -3,10 +3,14 @@
 use strict; use warnings;
 use Test::More;
 use lib 'lib';
+use File::Which;
 use Text::Tradition;
 use XML::LibXML;
 use XML::LibXML::XPathContext;
 
+plan skip_all => 'Need Graphviz installed to test graphs' 
+       unless File::Which::which( 'dot' );
+
 my $datafile = 't/data/Collatex-16.xml';
 
 my $tradition = Text::Tradition->new(