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# frozen_string_literal: true
module RuboCop
module Cop
module RSpec
# Checks that memoized helper names use the configured style.
#
# Variables can be excluded from checking using the `AllowedPatterns`
# option.
#
# @example EnforcedStyle: snake_case (default)
# # bad
# subject(:userName1) { 'Adam' }
# let(:userName2) { 'Adam' }
#
# # good
# subject(:user_name_1) { 'Adam' }
# let(:user_name_2) { 'Adam' }
#
# @example EnforcedStyle: camelCase
# # bad
# subject(:user_name_1) { 'Adam' }
# let(:user_name_2) { 'Adam' }
#
# # good
# subject(:userName1) { 'Adam' }
# let(:userName2) { 'Adam' }
#
# @example AllowedPatterns configuration
# # rubocop.yml
# # RSpec/VariableName:
# # EnforcedStyle: snake_case
# # AllowedPatterns:
# # - ^userFood
#
# @example
# # okay because it matches the `^userFood` regex in `AllowedPatterns`
# subject(:userFood_1) { 'spaghetti' }
# let(:userFood_2) { 'fettuccine' }
#
class VariableName < Base
include ConfigurableNaming
include AllowedPattern
include Variable
MSG = 'Use %<style>s for variable names.'
def on_send(node)
variable_definition?(node) do |variable|
return if variable.dstr_type? || variable.dsym_type?
return if matches_allowed_pattern?(variable.value)
check_name(node, variable.value, variable.loc.expression)
end
end
private
def message(style)
format(MSG, style: style)
end
end
end
end
end
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