Custom CaneLintSpec

.cane

--no-doc
--no-abc
--style-glob {app,lib}/**/*.rb
--require spec/cane_lint_spec.rb
--check CaneLintSpec
--lint-spec-glob {app,lib}/**/*.rb

cane_lint_spec.rb

class CaneLintSpec < Struct.new(:opts)
  def self.options
     {
        lint_spec_glob: ['Glob to run lint_spec metrics over',
                      default: '{app,lib}/**/*.rb',
                      variable: 'GLOB',
                      clobber: :no_lint_spec],
        no_lint_spec: ['Disable lint spec',
                        cast: ->(x) { !x } ]

     }
  end

  def self.key; :lint_spec; end
  def self.name; "Lint spec"; end

  def violations
    return [] if opts[:no_lint_spec]

    worker.map(file_names) {|file_name|
      find_violations(file_name)
    }.flatten
  end

  private

  def find_violations(file_name)
    Cane::File.iterator(file_name).map.with_index do |line, line_number|
      if line.match(/[^\#].*strftime/)
        {
          file:        file_name,
          line:        line_number + 1,
          label:       "Should not call strftime directly",
          description: "Should not call strftime directly"
        }
      end
    end.compact
  end

  def file_names
    Dir[opts.fetch(:lint_spec_glob)]
  end

  def worker
    Cane.task_runner(opts)
  end

end