Added spec to test Float#/ properly coercing other object

spec/ruby/core/float/divide_spec.rb

@@ -1,12 +1,34 @@
 require File.expand_path('../../../spec_helper', __FILE__)
 
+module Specs
+  module Float
+    class CanCoerce
+      def initialize(a)
+        @a = a
+      end
+
+      def coerce(b)
+        [self.class.new(b), @a]
+      end
+
+      def /(b)
+        @a.to_i % b.to_i
+      end
+    end
+  end
+end
+
 describe "Float#/" do
   it "returns self divided by other" do
     (5.75 / -2).should be_close(-2.875,TOLERANCE)
     (451.0 / 9.3).should be_close(48.494623655914,TOLERANCE)
     (91.1 / -0xffffffff).should be_close(-2.12108716418061e-08, TOLERANCE)
   end
 
+  it "properly coerces objects" do
+    (5.0 / Specs::Float::CanCoerce.new(5)).should be_close(0, TOLERANCE)
+  end
+
   it "properly handles BigDecimal argument" do
     require 'bigdecimal'
     (2.0 / BigDecimal.new('5.0')).should be_close(0.4, TOLERANCE)