Fastlane command being used.

fastlane-test-command.ruby

lane :test do |options|
  only_testing = ["APITests", "ClasspassTests", "UITests"]
  data_dog_time_report = 'test'
  if options[:uitests]
    only_testing = ["UITests"]
    data_dog_time_report = 'uitest'
  end
  clean = options[:clean]
  report_time_elapsed_to_datadog(data_dog_time_report) do
    output_directory = ENV["CIRCLE_ARTIFACTS"] ? ENV["CIRCLE_ARTIFACTS"] : '/tmp/artifacts'
    test_server_output_directory = "#{output_directory}/test-server.log"
    system("mkdir -p #{output_directory}")
    system("touch #{test_server_output_directory}")
    system("node ../../fixture-api/index.js > #{output_directory}/test-server.log &")
    output_file = "#{output_directory}/Development-Development.log"
    begin
      # This is the fastlane command.
      scan(
        workspace: "Classpass.xcworkspace",
        devices: ["iPhone 8"],
        scheme: "Development",
        configuration: "Test",
        output_directory: output_directory,
        buildlog_path: output_directory,
        clean: clean,
        code_coverage: true,
        skip_slack: true,
        only_testing: only_testing,
        include_simulator_logs: false
      )
      report_value_to_datadog("tests.failing", "success")
    rescue => ex
      report_log_lines_to_datadog("tests.failing", output_file, "Test Case '.*' failed")
      report_value_to_datadog("tests.failing", "failure")
      raise "Unit Tests Failed"
    end
  end
  if !options[:uitests]
    sh "bundle exec fastlane coverage report:true"
  end
end