Rspec：在不同范围内不可用的变量

Question

这是给我错误的测试：

require 'rails_helper'

RSpec.describe Todo, type: :model do    
    it { should have_many(:items).dependent(:destroy) }
end

当我跑步时

$ rspec

我收到此错误

F

Failures:

  1) Todo 
     Failure/Error: example.run
       `name` is not available from within an example (e.g. an `it` block) or from constructs that run in the scope of an example (e.g. `before`, `let`, etc). It is only available on an example group (e.g. a `describe` or `context` block).
     # ./spec/spec_helper.rb:50:in `block (3 levels) in <top (required)>'
     # ./spec/spec_helper.rb:49:in `block (2 levels) in <top (required)>'

我将测试更改为以尝试修复错误

require 'rails_helper'

RSpec.describe Todo, type: :model do
  describe { should have_many(:items).dependent(:destroy) }
end

我跑

$ rspec

我明白了

An error occurred while loading ./spec/models/todo_spec.rb.
Failure/Error: describe { should have_many(:items).dependent(:destroy) }
  `have_many` is not available on an example group (e.g. a `describe` or `context` block). It is only available from within individual examples (e.g. `it` blocks) or from constructs that run in the scope of an example (e.g. `before`, `let`, etc).
# ./spec/models/todo_spec.rb:7:in `block (2 levels) in <main>'
# ./spec/models/todo_spec.rb:7:in `block in <main>'
# ./spec/models/todo_spec.rb:3:in `<main>'
No examples found.


Finished in 0.00006 seconds (files took 1.45 seconds to load)
0 examples, 0 failures, 1 error occurred outside of examples

我怎样才能结束这个永无止境的循环？

This 是仓库。

This 是我正在处理的图片的文件。

编辑：

我通过再次初始化项目解决了这个问题。我没有浪费很多时间，因为项目不是很先进。无论如何，我为旧项目创建了一个 repo，因此任何人都可以在那里看到错误。

Answer 1

此错误是由于以前的rspec-rails 版本与最新版本的rails 的兼容性而出现的。我可以看到您使用的是 3.x 版本。所以，解决方法是使用最新版本的rspec-rails。

根据 rspec-rails 文档，将 rspec-rails 4.x 用于从 5.0 到 6.0 的 Rails。对 5.0 之前的 Rails 使用 rspec-rails 3.x。将 rspec-rails 1.x 用于 Rails 2.x。