我正在用M. Hartl的教程学习Rails。第 11.2.5 章，并在测试中得到此错误： 参数错误：错误的参数(预期的 URI 对象或 URI 字符串)

Question

完整的错误信息:

1) RelationshipsController creating a relationship with Ajax should increment the     Relationship count
Failure/Error: xhr :post, :create, relationship: { followed_id: other_user.id }
ArgumentError: bad argument (expected URI object or URI string)
# ./spec/requests/relationships_controller_spec.rb:14:in `block (4 levels) in <top (required)>'
# ./spec/requests/relationships_controller_spec.rb:13:in `block (3 levels) in <top (required)>'
2) RelationshipsController creating a relationship with Ajax should respond with success
Failure/Error: xhr :post, :create, relationship: { followed_id: other_user.id }
ArgumentError: bad argument (expected URI object or URI string)
# ./spec/requests/relationships_controller_spec.rb:19:in `block (3 levels) in <top (required)>'
3) RelationshipsController destroying a relationship with Ajax should decrement the Relationship count
Failure/Error: xhr :delete, :destroy, id: relationship.id
ArgumentError: bad argument (expected URI object or URI string)
# ./spec/requests/relationships_controller_spec.rb:31:in `block (4 levels) in <top (required)>'
# ./spec/requests/relationships_controller_spec.rb:30:in `block (3 levels) in <top (required)>'
4) RelationshipsController destroying a relationship with Ajax should respond with success
Failure/Error: xhr :delete, :destroy, id: relationship.id
ArgumentError: bad argument (expected URI object or URI string)
# ./spec/requests/relationships_controller_spec.rb:36:in `block (3 levels) in <top (required)>'

My github for源代码

在浏览器中AJAX工作正常，但测试是红色的。(

我对编程、Rails和Stackowerflow都很陌生。请帮我解决这个问题。: 3

Answer 1

我在Rails教程第11章的Ajax部分(Rails 3.2)中遇到了完全相同的问题。我认为Michael de Silva是对的，因为xhr不幸与RSpec混在了一起。

无论如何，我决定为了完整性(我几乎完成了教程)-我打算让xhr以某种方式在这里工作。我认为Mike Hartl的清单11.37应该使用ActionDispatcher::Integration::RequestHelpers方法xhr，如http://api.rubyonrails.org/classes/ActionDispatch/Integration/RequestHelpers.html method-i-xhr

而不是ActionController::TestCase::Behavior方法xhr，如http://api.rubyonrails.org/classes/ActionController/TestCase/Behavior.html method-i-xhr

因此，我将对actions:create和:destroy的引用替换为它们的命名路由，并且清单11.37中的测试示例变成了绿色。原

expect do
  xhr :post, :create, relationship: { followed_id: other_user.id }
end.to change(Relationship, :count).by(1)

,

expect do
  xhr :post, relationships_path, relationship: { followed_id: other_user.id }
end.to change(Relationship, :count).by(1)

和原

expect do
  xhr :delete, :destroy, id: relationship.id
end.to change(Relationship, :count).by(-1)

,

expect do
  xhr :delete, relationship_path(relationship.id), id: relationship.id
end.to change(Relationship, :count).by(-1)

Answer 2

看看是否有帮助:RSpec test destroy method (Rails Tutorial 3.2，第9章，第10例)

我还会在上面的链接中进一步阅读;你应该最大限度地利用Capybara，而不是将rspec与Rails为Action*::TestCase提供的方法混合使用。

你可以使用水豚的page.execute_script(但你必须启用):js => true)