simple money subtractionHEADmaster

2 files changed, 8 insertions, 3 deletions

diff --git a/lib/money.rb b/lib/money.rb
index 11394e6..0a32f50 100644
--- a/lib/money.rb
+++ b/lib/money.rb
@@ -6,11 +6,11 @@ class Money
   end
 
   def +(other)
-    plus(other)
+    Money.new(@amount + other.amount)
   end
 
-  def plus(other)
-    Money.new(@amount + other.amount)
+  def -(other)
+    Money.new(@amount - other.amount)
   end
 
   def ==(other)
diff --git a/spec/unit/money_spec.rb b/spec/unit/money_spec.rb
index 9716db2..2934a67 100644
--- a/spec/unit/money_spec.rb
+++ b/spec/unit/money_spec.rb
@@ -21,4 +21,9 @@ describe Money do
       result.should == Money.new(2.00)
     end
   end
+  context "when subtracting money" do
+    it "should return the correct amount" do
+      (Money.new(1.99) - Money.new(0.99)).should == Money.new(1.00)
+    end
+  end
 end