changed inspect so that only non-nil keys are shown by default - rela…

…ted to issue 194

.project

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>mongomapper</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>com.aptana.ide.core.unifiedBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>com.aptana.ruby.core.rubynature</nature>
+	</natures>
+</projectDescription>

lib/mongo_mapper/plugins/inspect.rb

@@ -5,8 +5,9 @@ module Inspect
       extend ActiveSupport::Concern
 
       module InstanceMethods
-        def inspect
-          attributes_as_nice_string = key_names.sort.collect do |name|
+        def inspect(include_super=false)
+          key_array = include_super ? key_names : attributes.keys
+          attributes_as_nice_string = key_array.sort.collect do |name|
             "#{name}: #{self[name].inspect}"
           end.join(", ")
           "#<#{self.class} #{attributes_as_nice_string}>"

test/unit/test_inspect.rb

@@ -6,14 +6,19 @@ class InspectTest < Test::Unit::TestCase
       @document = Doc('User') do
         key :name,  String
         key :age,   Integer
+        key :email, String
       end
 
       @doc = @document.new(:name => 'John', :age => 29)
     end
 
-    should "print out attributes in alpha sorted order" do
+    should "print out non-nil attributes in alpha sorted order" do
       @doc.inspect.should =~ /_id:.*, age: 29, name: "John"/
     end
+
+    should "print out all attributes when (optional) include_super argument is true" do
+      @doc.inspect(true).should =~ /_id:.*, age: 29, email: nil, name: "John"/
+    end
 
     should "include class name" do
       @doc.inspect.should =~ /^#<User/