debian-mirror-gitlab/rubocop/cop/rspec/have_gitlab_http_status.rb

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2020-03-13 15:44:24 +05:30
# frozen_string_literal: true
require 'rack/utils'
module RuboCop
module Cop
module RSpec
# This cops checks for `have_http_status` usages in specs.
# It also discourages the usage of numeric HTTP status codes in
# `have_gitlab_http_status`.
#
# @example
#
# # bad
# expect(response).to have_http_status(200)
# expect(response).to have_http_status(:ok)
# expect(response).to have_gitlab_http_status(200)
#
# # good
# expect(response).to have_gitlab_http_status(:ok)
#
class HaveGitlabHttpStatus < RuboCop::Cop::Cop
CODE_TO_SYMBOL = Rack::Utils::SYMBOL_TO_STATUS_CODE.invert
MSG_MATCHER_NAME =
'Use `have_gitlab_http_status` instead of `have_http_status`.'
MSG_STATUS =
'Prefer named HTTP status `%{name}` over ' \
'its numeric representation `%{code}`.'
MSG_UNKNOWN = 'HTTP status `%{code}` is unknown. ' \
'Please provide a valid one or disable this cop.'
MSG_DOCS_LINK = 'https://docs.gitlab.com/ee/development/testing_guide/best_practices.html#have_gitlab_http_status'
REPLACEMENT = 'have_gitlab_http_status(%{arg})'
def_node_matcher :have_http_status?, <<~PATTERN
(
send nil?
{
:have_http_status
:have_gitlab_http_status
}
_
)
PATTERN
def on_send(node)
return unless have_http_status?(node)
offenses = [
offense_for_name(node),
offense_for_status(node)
].compact
return if offenses.empty?
add_offense(node, message: message_for(offenses))
end
def autocorrect(node)
lambda do |corrector|
corrector.replace(node.source_range, replacement(node))
end
end
private
def offense_for_name(node)
return if method_name(node) == :have_gitlab_http_status
MSG_MATCHER_NAME
end
def offense_for_status(node)
code = extract_numeric_code(node)
return unless code
symbol = code_to_symbol(code)
return format(MSG_UNKNOWN, code: code) unless symbol
format(MSG_STATUS, name: symbol, code: code)
end
def message_for(offenses)
(offenses + [MSG_DOCS_LINK]).join(' ')
end
def replacement(node)
code = extract_numeric_code(node)
arg = code_to_symbol(code) || argument(node).source
format(REPLACEMENT, arg: arg)
end
def code_to_symbol(code)
CODE_TO_SYMBOL[code]&.inspect
end
def extract_numeric_code(node)
arg_node = argument(node)
return unless arg_node&.type == :int
arg_node.children[0]
end
def method_name(node)
node.children[1]
end
def argument(node)
node.children[2]
end
end
end
end
end