spec/luhn_spec.rb in moeffju-luhn-0.1.2 vs spec/luhn_spec.rb in moeffju-luhn-0.1.3

@@ -53,6 +53,9 @@
     it "should return Strings" do
       incomplete.luhn!.should be_a String
     end
   end
 
+  it "should return valid checksum (one digit)" do
+    123.luhn.should be 0
+  end
 end