Drop the codeclimate-test-reporter development dependency

[tricknotes]

spec/spec_helper.rb has started a Code Climate test reporter on every run since 2015. It has never reported anything.

It is a no-op here

CodeClimate::TestReporter.start starts SimpleCov only when the reporter decides to run, and that decision needs an environment variable:

def self.run?
  environment_variable_set? && run_on_current_branch?
end

def self.environment_variable_set?
  @environment_variable_set = !!ENV["CODECLIMATE_REPO_TOKEN"]
  ...
end

Nothing in this repository sets CODECLIMATE_REPO_TOKEN — not .github/workflows/tests.yml, not bin/setup, not the Rakefile. There is no .codeclimate.yml and no badge in the README. Running the two lines from spec_helper.rb as they stand:

run? = false
CODECLIMATE_REPO_TOKEN set? = false
SimpleCov.running = false

So SimpleCov never starts, no coverage is measured, and nothing is uploaded. The /coverage/ entry in .gitignore has been guarding a directory that is never written.

It is deprecated upstream

• codeclimate/ruby-test-reporter was archived on 2025-07-19. Its README: "These configuration instructions refer to a language-specific test reporter who is now deprecated in favor of our new unified test reporter client."
• The gem's last release is 1.0.9, from 2018-10-08. The gemspec pinned ~> 0.6.0, older still.
• Code Climate Quality has been succeeded by Qlty, and its migration guide states the old test reporter is not supported there. Adopting coverage reporting again would mean a new client and a new service, not a version bump.

Changes

• spec/spec_helper.rb: drop the require and the start call
• ember-cli-rails.gemspec: drop the development dependency

No CHANGELOG.md entry: this is a development dependency and nothing an application using the gem can observe changes.

Gemfile.lock is not committed, so there is nothing to regenerate here. Locally the removal also drops simplecov, simplecov-html and simplecov_json_formatter from the development bundle.

Tests

bin/rspec spec/lib gives the same result before and after: 174 examples, 2 failures. Both failures (app_spec.rb:192, app_spec.rb:200) are present on main and need node_modules installed to find the ember binary.