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Versions: 24
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Contents
# frozen_string_literal: true
module RuboCop
module Cop
module RSpec
# Prefer using verifying doubles over normal doubles.
#
# @see https://rspec.info/features/3-12/rspec-mocks/verifying-doubles
#
# @example
# # bad
# let(:foo) do
# double(method_name: 'returned value')
# end
#
# # bad
# let(:foo) do
# double("ClassName", method_name: 'returned value')
# end
#
# # good
# let(:foo) do
# instance_double("ClassName", method_name: 'returned value')
# end
#
class VerifiedDoubles < Base
MSG = 'Prefer using verifying doubles over normal doubles.'
RESTRICT_ON_SEND = %i[double spy].freeze
# @!method unverified_double(node)
def_node_matcher :unverified_double, <<~PATTERN
{(send nil? {:double :spy} $...)}
PATTERN
def on_send(node)
unverified_double(node) do |name, *_args|
return if name.nil? && cop_config['IgnoreNameless']
return if symbol?(name) && cop_config['IgnoreSymbolicNames']
add_offense(node)
end
end
private
def symbol?(name)
name&.sym_type?
end
end
end
end
end
Version data entries
24 entries across 24 versions & 5 rubygems