circleci_failed_spec_files.rb

require 'optparse'

options = {
    line: false,
    job_name: 'build',
    branch: nil,
    vcs_type: :github
}

OptionParser.new do |opts|
  opts.on('-n', '--build_num VALUE', Integer, 'CircleCI Build number(default: nil)') { |v| options[:build_num] = v }
  opts.on('-l', '--[no-]line', 'output lines(default: false)') { |v| options[:line] = v }
  opts.on('-j', '--job_name VALUE', 'job name(default: build)') { |v| options[:job_name] = v }
  opts.on('-b', '--branch VALUE', 'git branch name(default: current_branch)') { |v| options[:branch] = v }
  opts.on('-t', '--vcs_type VALUE', [:github, :bitbucket], 'vcs_type(default: github)') { |v| options[:vcs_type] = v }
  opts.on('-h', '--help', 'Prints this help') do
    puts opts
    exit
  end
end.parse!

user_name = ENV['CIRCLE_PROJECT_USERNAME']
repo_name = ENV['CIRCLE_PROJECT_REPONAME']
branch = options[:branch] || ENV.fetch('CIRCLE_BRANCH') do
  require 'git'
  Git.open(Rails.root).current_branch
end
vcs_type = options[:vcs_type]

build_num = options.fetch(:build_num) do
  project = CircleCi::Project.new(user_name, repo_name, vcs_type)
  builds = project.recent_builds_branch(branch, filter: 'completed').body
  test_job_builds = if builds.any? { |build| build['workflows'] }
                      # 特定のワークフローの特定のJOBの結果だけを抽出する
                      builds.select do |build|
                        build.dig('workflows', 'workflow_name') == 'build' && build.dig('workflows', 'job_name') == options[:job_name]
                      end
                    else
                      builds
                    end

  failed_builds, successful_builds = test_job_builds.partition { |build| build['failed'] }

  successful_build = successful_builds.first
  failed_build = failed_builds.first

  return nil if failed_build.nil?
  return nil if successful_build && (successful_build['build_num'] > failed_build['build_num'])
  failed_build['build_num']
end

if build_num
  build = CircleCi::Build.new(user_name, repo_name, vcs_type, build_num)
  tests = build.tests.body['tests']
  separator = options[:line] ? "\n" : ' '
  print tests.select { |test| test['result'] == 'failure' }.pluck('file').uniq.join(separator)
end