Replace Struct by Class to avoid stubbing respond_to?

Add some tests with local methods

test/deep_nesting_test.rb

@@ -19,7 +19,6 @@ class DeepNestingTest < ActiveSupport::TestCase
     @post = Post.new(42, 'I rock !')
     @user = User.new(1, 'foobar', 'male')
     @user.stub(:posts).and_return([@post])
-    @user.stub(:respond_to?).with(:each).and_return(false)
 
     @context = Context.new
     @context.assigns['user'] = @user

test/renderers/json_renderer_test.rb

@@ -4,7 +4,6 @@ class TestJsonRenderer < ActiveSupport::TestCase
 
   setup do
     @data = User.new(1, 'foobar', 'male')
-    @data.stub(:respond_to?).with(:each).and_return(false)
 
     @context = Context.new
     @context.assigns['data'] = @data
@@ -28,6 +27,13 @@ class TestJsonRenderer < ActiveSupport::TestCase
     assert_equal %q([{}]), render_json_output
   end
 
+  test "render object with local methods (used by decent_exposure)" do
+    @context.stub(:user).and_return(@data)
+    @template.data = :user
+    @template.source = { :id => :id }
+    assert_equal %q({"id":1}), render_json_output
+  end
+
   test "render single object attributes" do
     @template.source = { :id => :id, :name => :name }
     assert_equal %q({"id":1,"name":"foobar"}), render_json_output
@@ -44,6 +50,12 @@ class TestJsonRenderer < ActiveSupport::TestCase
     assert_equal %q({"author":{"name":"foobar"}}), render_json_output
   end
 
+  test "render child with local methods (used by decent_exposure)" do
+    @context.stub(:user).and_return(@data)
+    @template.source = { :author => { :_data => :user, :name => :name } }
+    assert_equal %q({"author":{"name":"foobar"}}), render_json_output
+  end
+
   test "render glued attributes from single object" do
     @template.source = { :_glue0 => { :_data => :@data, :name => :name } }
     assert_equal %q({"name":"foobar"}), render_json_output
@@ -86,7 +98,6 @@ class TestJsonRenderer < ActiveSupport::TestCase
 
   test "partial should be evaluated at rendering time" do
     # Set assigns
-    @data.stub(:respond_to?).with(:empty?).and_return(false)
     @context.assigns['user'] = @data
 
     # Stub Library#get

test/test_helper.rb

@@ -47,4 +47,11 @@ class Context
   end
 end
 
-User = Struct.new(:id, :name, :sex)
+class User
+  attr_accessor :id, :name, :sex
+  def initialize(id=nil, name=nil, sex=nil)
+    @id = id
+    @name = name
+    @sex = sex
+  end
+end