Ruby 4 compatibility #14
Open
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
The `ostruct` gem is no longer a default gem in Ruby 4. See: [release notes](https://www.ruby-lang.org/en/news/2025/12/25/ruby-4-0-0-released/#stdlib-updates) Calling `require 'ostruct'` results in this message: > warning: ostruct used to be loaded from the standard library, but is not part > of the default gems since Ruby 4.0.0. You can add ostruct to your Gemfile or > gemspec to fix this error. Followed by an error: ``` /path/to/ruby/4.0.0/bundled_gems.rb:60:in 'Kernel.require': cannot load such file -- ostruct (LoadError) ```
Ruby 3.0 (via `ostruct` gem v0.3.0) removed the internal `new_ostruct_member` method from `OpenStruct`. This was a protected/internal method used to dynamically define accessor methods. Replace manual `@table` manipulation with a simpler approach that transforms the hash and delegates to `super()`. References: - ostruct gem versions: https://rubygems.org/gems/ostruct/versions - Changes in ostruct 0.3.0: https://my.diffend.io/gems/ostruct/0.1.0/0.3.0 - Ruby/ostruct version mapping: https://stdgems.org/ostruct/
Ruby 3.0 enforces strict separation between positional hash arguments
and keyword arguments. RSpec matchers now distinguish between:
- `{ foo: :bar }` - positional hash argument
- `foo: :bar` - keyword arguments
Update test expectations to use explicit hash literals since the
production code passes options as positional hash arguments.
Reference:
https://www.ruby-lang.org/en/news/2019/12/12/separation-of-positional-and-keyword-arguments-in-ruby-3-0/
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
The
ostructgem is no longer a default gem in Ruby 4. See: release notesCalling
require 'ostruct'results in this message:Followed by an error:
I also included some fixes to get the test suite up-and-running on Ruby 3+ and 4+: