ruby-on-rails - 为什么这个 Rails Controller 测试失败了？

Question

我正在尝试了解此测试失败的原因。 (我是测试新手。)我正在使用内置的 Rails 测试框架，并添加了 Shoulda gem。

测试:

require 'shoulda'

context "on GET to :new" do

  setup do
    get(:new)
  end

  should_render_template :new
  should_not_set_the_flash

end

失败:

1) Failure:
test: on GET to :new should render template :new. (SessionsControllerTest)
[/usr/local/lib/ruby/gems/1.8/gems/thoughtbot-shoulda-2.0.6/lib/shoulda/controller   /macros.rb:220:in `__bind_1233882600_699194'
/usr/local/lib/ruby/gems/1.8/gems/thoughtbot-shoulda-2.0.6/lib/shoulda/context.rb:254:in `call'
/usr/local/lib/ruby/gems/1.8/gems/thoughtbot-shoulda-2.0.6/lib/shoulda/context.rb:254:in `test: on GET to :new should render template :new. '
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/testing/setup_and_teardown.rb:94:in `__send__'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/testing/setup_and_teardown.rb:94:in `run']:
expecting <"new"> but rendering with <"">

2 tests, 2 assertions, 1 failures, 0 errors

但是如果我在控制台上使用 app.get '/sessions/new' 运行它，它可以正常工作，没有错误。

“new”模板在浏览器中按预期呈现。

我正在使用 Haml。也许这会导致问题。我的模板名为“new.html.haml”。

Answer 1

失败表示没有呈现模板。尝试确保您没有被重定向

should_respond_with :success

并断言 @response.body 的内容只是为了查看发回的内容

# This will fail but should give you some clue about what was sent back.
should "sent something back in the body" do
  assert_match 'boohooo', @response.body
end

你也可以断言一个特定的模板，所以你也可以试一试:

should_render_template "new.html.haml"

但是，我不怀疑 HAML 是导致您出现问题的原因。