Fix the rotate hue tests to return to the same colour

lib/colour.rb

@@ -27,7 +27,7 @@ def to_s
 
     # Return the complementary colour   
     def complementary
-        rotate_hue(180)
+        rotate_hue(180)[0]
     end
 
     # Return two colours spread distance apart opposite

spec/support/color_representation.rb

@@ -49,17 +49,38 @@
         gradient.size.should eql(10)
     end
 
-    it "should provide a complementary colour"
-
-    it "should provide a split complemenatry set of colours"
+    it "should provide a complementary colour" do
+        c = green.complementary
+        c.nil?.should eql(false)
+        c.hex.should eql(0xFF00FF)
+    end
 
-    it "should apply a block when generating a split complementary set of colours if one is provided"
+    it "should provide a split complementary set of colours" do
+        colours = green.split_complementary
+        colours.size.should eql(2)
+        colours[0].hex.should eql(0x7F00FF)
+        colours[1].hex.should eql(0xFF007F)
+    end
 
-    it "should provide a series of colours rotating around the Hue wheel"
 
-    it "should apply a block to the colours when generating the colours around the colour wheel if one is provided" 
+    it "should apply a block when generating a split complementary set of colours if one is provided" do
+        i = 0
+        #TODO it would be nice to use the .should_recieve(:blah).and_yeild(:check) 
+        # but because this is a shared test, one time we will get RGB, another we get HSV
+        green.split_complementary do |c| 
+            if c.hex == 0x7F00FF or c.hex == 0xFF007F then
+               i += 1
+            end
+        end 
+        i.should eql(2) 
+    end
 
-    it "should generate triadic colours" 
+    it "should provide a series of colours rotating around the Hue wheel" do
+         colours = green.rotate_hue(degrees = 36, steps = 11)
+         colours.size.should eql(11)
+         colours[0].hex.should eql(colours[10].hex)
+         colours[4].hex.should eql(0xFF00FF)
     end
+end