def test_should_create_post_successfully
    user = FactoryGirl.create(:user_valid)
    category = FactoryGirl.create(:category_valid)
    #@request.session[:user_id] = user.id
    assert_difference('Post.count') do

      article = FactoryGirl.create(:post_valid)

      post :create, {:post=>{:category_id=>category.id,
                             :title=>article.title,
                             :slug=>article.slug,
                             :summary=>article.summary,
                             :content=>article.content}},
                    {:user_id => user.id}
    end

    #assert_redirected_to admin_posts_path(assigns(:posts))

  end

上面是我的功能测试代码，针对 postscontroller 的 create。 controller 中的代码是这样的。

def create
  @category = Category.find(params[:post][:category_id])

  params[:post].delete(:category_id)
  @post = @category.posts.build(params[:post])
  @post.user = current_user
  @post.tag_ids = params[:tag_ids]
  if @post.save
    flash[:notice] = "post was created successfully"
    redirect_to admin_posts_path
  else
    flash.now[:notice] = "create post failed"
    render :new
  end
end

create 成功之后会跳转，我在 chrome 的 developer tools 下面看到的也是一个 302，然后才是 200. 但是我的测试却提示我测试失败。

test_should_create_post_successfully(Admin::PostsControllerTest) [test/functional/admin/posts_controller_test.rb:22]:
Expected response to be a <:redirect>, but was <200>