Fix code coverage (eval) for delegates

[bkuhlmann]

Overview

With the release of SimpleCov 0.22.0 and the addition of the enable_coverage_for_eval feature, I'm seeing issues with code coverage on delegates.

I'm thinking SimpleCov shouldn't consider this a violation? I realize I could use # :nocov: comments on code but that would touch a lot of files.

I think this is a bug?

Screenshots/Screencasts

Steps to Recreate

Here's a snippet of source code for a simple class in Rails to reproduce the error:

module Tasks
  class View
    delegate(*%i[id completed_at created_at description to_param updated_at], to: :record)

    def initialize record
      @record = record
    end

    private

    attr_reader :record
  end
end

Here's a snippet of my spec_helper.rb in case it helps:

SimpleCov.start "rails" do
  add_filter %r(^/spec/)
  enable_coverage :branch
  enable_coverage_for_eval
  minimum_coverage_by_file line: 95, branch: 95
end

The corresponding spec has no tests written for the delegate since that would be essentially testing Rails and seems unnecessary.

Environment

• Ruby: ruby 3.2.0 (2022-12-25 revision a528908271) [arm64-darwin22.2.0]
• SimpleCov: 0.22.0
• Rails: 7.0.4