Ensure that attributes are returned after initialization

lib/lotus/validations.rb

@@ -20,17 +20,20 @@ def valid?
             value = Lotus::Utils::Kernel.send(coercer.to_s, value)
           end
 
-          instance_variable_set(:"@#{ attribute }", value)
+          @attributes[attribute] = value
         end
       end
     end
 
     module ClassMethods
       def attribute(name, options = {})
-        class_eval do
-          attributes << [name, options]
-          attr_reader name
-        end
+        attributes << [name, options]
+
+        class_eval %{
+          def #{ name }
+            @attributes.fetch(:#{ name })
+          end
+        }
       end
 
       # FIXME make this private

test/fixtures.rb

@@ -1,3 +1,9 @@
+class InitializerTest
+  include Lotus::Validations
+
+  attribute :attr
+end
+
 class TypeValidatorTest
   include Lotus::Validations
 

test/initialize_test.rb

@@ -0,0 +1,13 @@
+require 'test_helper'
+
+describe Lotus::Validations do
+  describe '#initialize' do
+    before do
+      @validator = InitializerTest.new(attr: 23)
+    end
+
+    it 'returns a value for the given attribute' do
+      @validator.attr.must_equal 23
+    end
+  end
+end