expect(response).to render_template(file: "#{Rails.root}/public/404.html")

[belgoros]

I have a controller spec passing in Rails 5.2 but failing in Rails 6.1.5:

```

expect(response).to render_template(file: "#{Rails.root}/public/404.html")

```

What can be different between 2 Rails versions?

The error I get:

```

Failure/Error: expect(response).to render_template(file: "#{Rails.root}/public/404.html")

       Expected [] to include "/Users/XXX/my_rails_app/public/404.html".

```

Used spec-rails version: 4.0.2.

Any ideas?

[belgoros]

When I check the status of the response, it is correct in both, Rails 5.2 and 6.1.5 version - 404.

[belgoros]

The difference is also in the version of `rails-controller-testing` gem:

- 1.0.5 for Rails 6.1.5

- 1.0.4 for Rails 5.2.4

[Jon Rowe]

Hi

Have you tried upgrading rspec-rails to `5.1.2` thats where support for Rails 6.1 exists and there were some changes in this area.

Cheers

Jon

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[belgoros]

It seems like there was some discussions about the same issue:

- https://github.com/rails/rails-controller-testing/issues/73

and there is a PR waiting to be merged:
https://github.com/rails/rails-controller-testing/pull/76

[belgoros]

Upgrading to rspec-rails 5.1 fixed the issue. Thanks a lot!