[wtn]

• parts.rb uses CompositeReadIO but didn't require it, so calling FilePart.new after require 'multipart/post/parts' raised NameError.
• multipart/post.rb didn't require version.rb, so Multipart::Post::VERSION was undefined. require 'multipart_post' had the same problem with MultipartPost::VERSION, which is all that file defined before 2.2.0.
• parts_spec.rb and composite_read_io_spec.rb use UploadIO but didn't require it, so each failed when run alone.

parts_spec.rb no longer requires composite_read_io, so running it alone fails without the parts.rb fix. The full suite passes either way, since other spec files load composite_read_io first.

Types of Changes

• Bug fix.
• Maintenance.

Contribution

• I added tests for my changes.
• I tested my changes locally.
• I agree to the Developer's Certificate of Origin 1.1.