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#!/usr/bin/env ruby
# frozen_string_literal: true
require 'gitlab'
module Tooling
class FindChanges
def initialize(output_file: nil, matched_tests_file: nil, frontend_fixtures_mapping_path: nil)
@gitlab_token = ENV['PROJECT_TOKEN_FOR_CI_SCRIPTS_API_USAGE'] || ''
@gitlab_endpoint = ENV['CI_API_V4_URL']
@mr_project_path = ENV['CI_MERGE_REQUEST_PROJECT_PATH']
@mr_iid = ENV['CI_MERGE_REQUEST_IID']
@output_file = output_file
@matched_tests_file = matched_tests_file
@frontend_fixtures_mapping_path = frontend_fixtures_mapping_path
end
def execute
raise ArgumentError, "An path to an output file must be given as first argument." if output_file.nil?
add_frontend_fixture_files!
File.write(output_file, file_changes.join(' '))
end
def only_js_files_changed
@output_file = nil # We ensure that we'll get the diff from the MR directly, not from a file.
file_changes.any? && file_changes.all? { |file| file.end_with?('.js') }
end
private
attr_reader :gitlab_token, :gitlab_endpoint, :mr_project_path,
:mr_iid, :output_file, :matched_tests_file, :frontend_fixtures_mapping_path
def gitlab
@gitlab ||= begin
Gitlab.configure do |config|
config.endpoint = gitlab_endpoint
config.private_token = gitlab_token
end
Gitlab
end
end
def add_frontend_fixture_files?
matched_tests_file && frontend_fixtures_mapping_path
end
def add_frontend_fixture_files!
return unless add_frontend_fixture_files?
# If we have a `test file -> JSON frontend fixture` mapping file, we add the files JSON frontend fixtures
# files to the list of changed files so that Jest can automatically run the dependent tests
# using --findRelatedTests flag.
test_files.each do |test_file|
file_changes.concat(frontend_fixtures_mapping[test_file]) if frontend_fixtures_mapping.key?(test_file)
end
end
def file_changes
@file_changes ||=
if output_file && File.exist?(output_file)
File.read(output_file).split(' ')
else
mr_changes.changes.flat_map do |change|
change.to_h.values_at('old_path', 'new_path')
end.uniq
end
end
def mr_changes
@mr_changes ||= gitlab.merge_request_changes(mr_project_path, mr_iid)
end
def test_files
return [] if !matched_tests_file || !File.exist?(matched_tests_file)
File.read(matched_tests_file).split(' ')
end
def frontend_fixtures_mapping
return {} if !frontend_fixtures_mapping_path || !File.exist?(frontend_fixtures_mapping_path)
JSON.parse(File.read(frontend_fixtures_mapping_path)) # rubocop:disable Gitlab/Json
end
end
end
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