add javadoc for extension

Author: monkstone

pom.rb

@@ -38,6 +38,8 @@
     plugin( :compiler, '3.1',
           'source' =>  '1.8',
           'target' =>  '1.8' )
+    plugin( :javadoc, '2.10.3',
+          'link' =>  'http://processing.github.io/processing-javadocs/core' )
     plugin( :jar, '2.4',
             'archive' => {
               'manifestFile' => 'MANIFEST.MF'

pom.xml

@@ -1,10 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-DO NOT EDIT, project now uses polyglot maven, hence pom.rb this file was
-autogenerated from the build
+Auto generated do no edit
 
--->
+ -->
 <project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
   <modelVersion>4.0.0</modelVersion>
@@ -83,6 +82,13 @@ autogenerated from the build
             <target>1.8</target>
           </configuration>
         </plugin>
+        <plugin>
+          <artifactId>maven-javadoc-plugin</artifactId>
+          <version>2.10.3</version>
+          <configuration>
+            <link>http://processing.github.io/processing-javadocs/core</link>
+          </configuration>
+        </plugin>
         <plugin>
           <artifactId>maven-jar-plugin</artifactId>
           <version>2.4</version>

test/helper_methods_test.rb

@@ -23,16 +23,19 @@ def test_hex_color
     assert hex_color(hexstring) == -3381760, 'hexadecimal string color'
     assert_raises(StandardError, 'Dodgy Hexstring') do
       hex_color(dodgy_hexstring)
-    end  
-  end 
-  
+    end
+    assert_raises(StandardError, 'Dodgy Color Conversion') do
+      hex_color([])
+    end
+  end
+
   def test_dist
     ax, ay, bx, by = 0, 0, 1.0, 1.0
     assert dist(ax, ay, bx, by) == Math.sqrt(2), '2D distance'
     by = 0.0
     assert dist(ax, ay, bx, by) == 1.0, 'when y dimension is zero'
     ax, ay, bx, by = 0, 0, 0.0, 0.0
-    assert dist(ax, ay, bx, by) == 0.0, 'when x and y dimension are zero' 
+    assert dist(ax, ay, bx, by) == 0.0, 'when x and y dimension are zero'
     ax, ay, bx, by = 1, 1, -2.0, -3.0
     assert dist(ax, ay, bx, by) == 5, 'classic triangle dimensions'
     ax, ay, bx, by, cx, cy = -1, -1, 100, 2.0, 3.0, 100