Merge pull request #78 from skoba/better_range

 A proposal to better random number generation #62

Author: brandonarbini

lib/forgery/extensions/range.rb

@@ -9,7 +9,7 @@ def unextend
       def random
         Integer(first) && Integer(last)
         raise ArgumentError if first > last
-        Kernel.rand(last - first + (exclude_end? ? 0 : 1)) + first
+        Random.rand self
       rescue ArgumentError
         Forgery::Extend(to_a).random
       end

spec/extensions/range_spec.rb

@@ -27,7 +27,7 @@
   end
 
   it "should not return the maximum at excluded range" do
-    expect(Kernel).to receive(:rand).with(9).and_return(8)
-    expect(Forgery::Extend(0...9).random).not_to be_equal 9
+    Random.should_receive(:rand).with(0...9).and_return(8)
+    Forgery::Extend(0...9).random.should_not be_equal 9
   end
 end