在集成测试时，出现了ActionController::ParameterMissing，尽管日志显示相反

Question

我已经在Ubuntu 16.04 amd64服务器上使用https://gorails.com/setup/ubuntu/16.04的说明安装了Rails。我使用'rbenv'而不是其他选项。

我创建了一个名为testapp的新应用。

然后执行:

$ rails generate scaffold Test name:string age:integer

然后，我执行:

$ bin/rails generate integration_test tests_post

修改了test/integration/tests_post_test。

require 'test_helper'
class TestsPostTest < ActionDispatch::IntegrationTest
  test "can create an item" do
    get "/tests/new"
    assert_response :success
    post "/tests",
      params: { test: { name: 'Micky Mouse', age: 120 } }
    assert_response :redirect
    follow_redirect!
    assert_response :success
  end
end

然后我执行:

rake test

这会给我以下错误:

Run options: --seed 24994
# Running:
.......E
Finished in 0.247049s, 32.3822 runs/s, 56.6689 assertions/s.
  1) Error:
TestsPostTest#test_can_create_an_item:
ActionController::ParameterMissing: param is missing or the value is empty: test
    app/controllers/tests_controller.rb:72:in `test_params'
    app/controllers/tests_controller.rb:27:in `create'
    test/integration/tests_post_test.rb:8:in `block in <class:TestsPostTest>'
8 runs, 14 assertions, 0 failures, 1 errors, 0 skips

然而，相关的日志显示如下:

--------------------------------------
TestsPostTest: test_can_create_an_item
--------------------------------------
Started GET "/tests/new" for 127.0.0.1 at 2016-09-30 07:50:18 -0400
Processing by TestsController#new as HTML
  Rendered tests/_form.html.erb (13.6ms)
  Rendered tests/new.html.erb within layouts/application (16.4ms)
Completed 200 OK in 170ms (Views: 161.1ms | ActiveRecord: 0.0ms)
Started POST "/tests" for 127.0.0.1 at 2016-09-30 07:50:19 -0400
Processing by TestsController#create as HTML
  Parameters: {"params"=>{"test"=>{"name"=>"Mickey Mouse", "age"=>"120"}}}
Completed 400 Bad Request in 0ms (ActiveRecord: 0.0ms)

在开发和生产中，只有在测试中才会出现错误。我一直在查看我在其他项目中看到的例子，但我没有看到我在这里做了什么特别不同寻常的事情。我创建这些具体步骤是为了尽可能简单地展示这个问题。有什么办法让它正常工作吗?这个版本的rake(11.3.0)是否有bug ?

Answer 1

您可能正在使用Rails 4(考虑到您正在遵循的安装教程)。对于Rails 4，在发布集成测试时不需要包装参数。修改行:

post "/tests", params: { test: { name: 'Micky Mouse', age: 120 } }

post "/tests", { test: { name: 'Micky Mouse', age: 120 } }

你会没事的