test "There's response" do
    postCelso = Post.create(:author => "Celso", :title => "Better way to cook eggs", :text => "Does it make any differente to cook the eggs in a microwave oven rather than in a conventional one?")
    postCelso.save
    post = Post.create(:title => "WTF?", :text => "Do you cook your eggs in an oven?")
    post.replies << postCelso
    assert post.replies[0] == postCelso
end