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Contents
# frozen_string_literal: true
module RuboCop
module Cop
module RSpec
# Ensure that subject is defined using subject helper.
#
# @example
# # bad
# let(:subject) { foo }
# let!(:subject) { foo }
# subject(:subject) { foo }
# subject!(:subject) { foo }
#
# # bad
# block = -> {}
# let(:subject, &block)
#
# # good
# subject(:test_subject) { foo }
#
class SubjectDeclaration < Base
MSG_LET = 'Use subject explicitly rather than using let'
MSG_REDUNDANT = 'Ambiguous declaration of subject'
# @!method offensive_subject_declaration?(node)
def_node_matcher :offensive_subject_declaration?, <<~PATTERN
(send nil? ${#Subjects.all #Helpers.all} {(sym :subject) (str "subject")} ...)
PATTERN
def on_send(node)
offense = offensive_subject_declaration?(node)
return unless offense
add_offense(node, message: message_for(offense))
end
private
def message_for(offense)
Helpers.all(offense) ? MSG_LET : MSG_REDUNDANT
end
end
end
end
end
Version data entries
5 entries across 5 versions & 2 rubygems