lib/rubocop/cop/lint/require_relative_self_path.rb
# frozen_string_literal: true
module RuboCop
module Cop
module Lint
# Checks for uses a file requiring itself with `require_relative`.
#
# @example
#
# # bad
#
# # foo.rb
# require_relative 'foo'
# require_relative 'bar'
#
# # good
#
# # foo.rb
# require_relative 'bar'
#
class RequireRelativeSelfPath < Base
include RangeHelp
extend AutoCorrector
MSG = 'Remove the `require_relative` that requires itself.'
RESTRICT_ON_SEND = %i[require_relative].freeze
def on_send(node)
return unless (required_feature = node.first_argument)
return unless required_feature.respond_to?(:value)
return unless same_file?(processed_source.file_path, required_feature.value)
add_offense(node) do |corrector|
corrector.remove(range_by_whole_lines(node.source_range, include_final_newline: true))
end
end
private
def same_file?(file_path, required_feature)
file_path == required_feature || remove_ext(file_path) == required_feature
end
def remove_ext(file_path)
File.basename(file_path, File.extname(file_path))
end
end
end
end
end