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Contents
# frozen_string_literal: true
module RuboCop
module Cop
module RSpec
# Checks where `contain_exactly` is used.
#
# This cop checks for the following:
# - Prefer `match_array` when matching array values.
# - Prefer `be_empty` when using `contain_exactly` with no arguments.
#
# @example
# # bad
# it { is_expected.to contain_exactly(*array1, *array2) }
#
# # good
# it { is_expected.to match_array(array1 + array2) }
#
# # good
# it { is_expected.to contain_exactly(content, *array) }
#
class ContainExactly < Base
extend AutoCorrector
MSG = 'Prefer `match_array` when matching array values.'
RESTRICT_ON_SEND = %i[contain_exactly].freeze
def on_send(node)
return if node.arguments.empty?
check_populated_collection(node)
end
private
def check_populated_collection(node)
return unless node.each_child_node.all?(&:splat_type?)
add_offense(node) do |corrector|
autocorrect_for_populated_array(node, corrector)
end
end
def autocorrect_for_populated_array(node, corrector)
arrays = node.arguments.map do |splat_node|
splat_node.children.first
end
corrector.replace(
node,
"match_array(#{arrays.map(&:source).join(' + ')})"
)
end
end
end
end
end
Version data entries
38 entries across 38 versions & 7 rubygems