了解 RSpec 失败

Question

我在运行 rspec spec/ 时遇到这些失败。失败的规范是使用脚手架自动生成的。我正在尝试理解 RSpec，但我不知道从哪里开始寻找原因，除了感觉缺少某些方法？！？然而，应用程序似乎运行良好。 test.log 中没有显示有关这些失败的信息。我是否应该在其他地方寻找提示来追踪这个问题？

$ rspec spec/
.....................F.F.

Failures:

  1) clowns/edit.html.haml renders the edit clown form
     Failure/Error: render
     undefined method `to_sym' for nil:NilClass
     # ./app/views/clowns/_form.html.haml:4:in `block in _app_views_clowns__form_html_haml__3590088286240866241_2176114460_3896491916910336970'
     # ./app/views/clowns/_form.html.haml:1:in `_app_views_clowns__form_html_haml__3590088286240866241_2176114460_3896491916910336970'
     # ./app/views/clowns/edit.html.haml:3:in `_app_views_clowns_edit_html_haml___574620942879655923_2176081980_599706797287605391'
     # ./spec/views/clowns/edit.html.haml_spec.rb:13:in `block (2 levels) in <top (required)>'

  2) clowns/new.html.haml renders new clown form
     Failure/Error: render
     undefined method `to_sym' for nil:NilClass
     # ./app/views/clowns/_form.html.haml:4:in `block in _app_views_clowns__form_html_haml__3590088286240866241_2176114460_3896491916910336970'
     # ./app/views/clowns/_form.html.haml:1:in `_app_views_clowns__form_html_haml__3590088286240866241_2176114460_3896491916910336970'
     # ./app/views/clowns/new.html.haml:3:in `_app_views_clowns_new_html_haml__1085372210838170129_2159651900_599706797287605391'
     # ./spec/views/clowns/new.html.haml_spec.rb:12:in `block (2 levels) in <top (required)>'

Finished in 1.03 seconds
27 examples, 2 failures, 2 pending

这是显然失败的规范（edit.html.haml_spec.rb）。它是由 rails gscaffold Clown name:string bubbles:integer 自动生成的：

#spec/views/clowns/edit.html.haml_spec.rb
require 'spec_helper'

describe "clowns/edit.html.haml" do
  before(:each) do
    @clown = assign(:clown, stub_model(Clown,
      :name => "MyString",
      :balloons => 1
    ))
  end

  it "renders the edit clown form" do
    render

    # Run the generator again with the --webrat-matchers flag if you want to use webrat matchers
    assert_select "form", :action => clown_path(@clown), :method => "post" do
      assert_select "input#clown_name", :name => "clown[name]"
      assert_select "input#clown_balloons", :name => "clown[balloons]"
    end
  end
end

Answer 1

您是否也在使用simple_form（或者甚至formtastic）？当我将脚手架表单从标准表单转换为 simple_form 表单时，我遇到了同样的错误 (form_for(@user) => simple_form_for(@user))。

正如你所说，它仍然有效，所以我不确定是否值得担心。我认为你最好让 Cucumber 去担心这件事。 Sarah Mei 表示查看规范是浪费时间 。 :-)