我正在通过 M. Hartl 的教程学习 Rails。通道。 11.2.5 并在测试中出现此错误：ArgumentError: bad argument (expected URI object or URI string)

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 source of code

在浏览器中 AJAX 工作正常，但测试是红色的。 :(

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

Answer 1

在 RailsTutorial（使用 Rails 3.2）第 11 章的相同 Ajax 部分之后，我遇到了完全相同的问题。我认为 Michael de Silva 是对的，因为不幸的是 xhr 在这里与 RSpec 混合在一起。

无论如何，为了完整起见，我决定这样做（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，我将操作 :create 和 :destroy 的引用替换为它们的命名路由，并且代码清单 11.37 中的测试示例变为绿色。原来的

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

成为，

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

原来的

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

成为，

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

Answer 2

看看这是否有帮助： RSpec test destroy method (Rails Tutorial 3.2 Ch. 9, Ex. 10)

我还会在上面的链接中进一步阅读；您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。改为这样做

你可以使用 capybara 的page.execute_script（但你必须启用 此示例的 javascript :js => true)