1 files changed, 11 insertions, 4 deletions
diff --git a/spec/ruby/library/bigdecimal/plus_spec.rb b/spec/ruby/library/bigdecimal/plus_spec.rb
index 72ec282075..d1934841c8 100644
--- a/spec/ruby/library/bigdecimal/plus_spec.rb
+++ b/spec/ruby/library/bigdecimal/plus_spec.rb
@@ -1,4 +1,4 @@
-require File.expand_path('../../../spec_helper', __FILE__)
+require_relative '../../spec_helper'
 require 'bigdecimal'
 
 describe "BigDecimal#+" do
@@ -30,8 +30,8 @@ describe "BigDecimal#+" do
   end
 
   it "returns NaN if NaN is involved" do
-    (@one + @nan).nan?.should == true
-    (@nan + @one).nan?.should == true
+    (@one + @nan).should.nan?
+    (@nan + @one).should.nan?
   end
 
   it "returns Infinity or -Infinity if these are involved" do
@@ -41,7 +41,14 @@ describe "BigDecimal#+" do
   end
 
   it "returns NaN if Infinity + (- Infinity)" do
-    (@infinity + @infinity_minus).nan?.should == true
+    (@infinity + @infinity_minus).should.nan?
   end
 
+  describe "with Object" do
+    it "tries to coerce the other operand to self" do
+      object = mock("Object")
+      object.should_receive(:coerce).with(@one).and_return([@one, BigDecimal("42")])
+      (@one + object).should == BigDecimal("43")
+    end
+  end
 end