用于更新文章的Rspec控制器测试不起作用

Question

这是我的相关代码的controller_spec文件部分.....

login_user
  context 'Update article with valid attributes' do
    it 'Update article'do 
      article = Article.create!(attributes_for(:article))
      put :update, 
          id:article.to_param,
          :article => attributes_for(:article, title: "Title Changed")
      article.reload
      expect(Article.first.title).to eq("Title Changed")
    end
  end
end

我收到此错误 失败/错误：期待（Article.first.title）.to eq（“标题已更改”）

   expected: "Title Changed"
        got: "My first post"

   (compared using ==)

更新的控制器代码

# ..ArticlesController#update
def update
  @article = Article.find(params[:id])
  if @article.update(article_params)
    redirect_to @article
  else
    render 'edit'
  end
end