v6.0.0 breaks if a helper spec subject is named `name` or if a helper module defines a `#name` method with arguments

[magni-]

What Ruby, Rails and RSpec versions are you using?

Ruby version: 3.0.3
Rails version: 7.0.3.1
RSpec version: 6.0.0

Observed behaviour

We had a helper spec start to fail when attempting to upgrade rspec-rails to v6.0.0. While debugging to figure out why it was just the one helper spec that failed (while many others continued passing), I figured out the issue had to do with the helper in question defining a method called #name. We usually name our subjects after the method they're testing. In this case, switching to an unnamed subject caused a different error: it turned out there are two separate issues.

When using subject(:name)

NoMethodError: undefined method `view_context' for nil:NilClass

When defining a #name helper with at least one argument

ArgumentError: wrong number of arguments (given 0, expected 1)
This breaks all specs in the file, not just the specs for #name

Expected behaviour

The specs in the example app should all pass.

Can you provide an example app?

https://github.com/magni-/rspec-rails-dummy

[pirj]

Oh I was wrong

[JonRowe]

It turns out the module has a setup hook which is triggered which uses #name, so in #2625 I've replaced it with the method by hand, that branch should fix the issue @magni-

[magni-]

@JonRowe Thanks for the speedy fix! I've updated https://github.com/magni-/rspec-rails-dummy, this fixes the errors seen on 6.0.0 👍🏼

If you try running the specs yourself, you'll see there's still a couple of errors, but those were already present on 5.1.2 and seem to be due to helper including all helpers rather than just the one being described, which breaks when multiple helpers define a method with the same name. I don't know if that's worth opening another Issue for or if it's As Designed ? (I couldn't find where in the RSpec or Rails internals this behavior was coming from. I'm guessing it's here, but I couldn't see where _helpers was getting set).

[JonRowe]

The last two specs seem to be Rails behaviour due to the overlapping method names, its not something we control we just provide access to an action view testcase.

[magni-]

Dependabot PR for 6.0.1 came in, our build passed ☺️