How to use execute_command_in_parallel method of ParallelTests Package

Best Parallel_tests_ruby code snippet using ParallelTests.execute_command_in_parallel

cli.rb

Source:cli.rb

...13      num_processes = ParallelTests.determine_number_of_processes(options[:count])14      num_processes *= (options[:multiply] || 1)15      options[:first_is_1] ||= first_is_1?16      if options[:execute]17        execute_command_in_parallel(options[:execute], num_processes, options)18      else19        run_tests_in_parallel(num_processes, options)20      end21    end22    private23    def handle_interrupt24      @graceful_shutdown_attempted ||= false25      Kernel.exit if @graceful_shutdown_attempted26      # The Pid class's synchronize method can't be called directly from a trap27      # Using Thread workaround https://github.com/ddollar/foreman/issues/33228      Thread.new { ParallelTests.stop_all_processes }29      @graceful_shutdown_attempted = true30    end31    def execute_in_parallel(items, num_processes, options)32      Tempfile.open 'parallel_tests-lock' do |lock|33        ParallelTests.with_pid_file do34          simulate_output_for_ci options[:serialize_stdout] do35            Parallel.map(items, in_threads: num_processes) do |item|36              result = yield(item)37              reprint_output(result, lock.path) if options[:serialize_stdout]38              ParallelTests.stop_all_processes if options[:fail_fast] && result[:exit_status] != 039              result40            end41          end42        end43      end44    end45    def run_tests_in_parallel(num_processes, options)46      test_results = nil47      run_tests_proc = -> do48        groups = @runner.tests_in_groups(options[:files], num_processes, options)49        groups.reject!(&:empty?)50        if options[:only_group]51          groups = options[:only_group].map { |i| groups[i - 1] }.compact52          num_processes = 153        end54        report_number_of_tests(groups) unless options[:quiet]55        test_results = execute_in_parallel(groups, groups.size, options) do |group|56          run_tests(group, groups.index(group), num_processes, options)57        end58        report_results(test_results, options) unless options[:quiet]59      end60      if options[:quiet]61        run_tests_proc.call62      else63        report_time_taken(&run_tests_proc)64      end65      if any_test_failed?(test_results)66        warn final_fail_message67        # return the highest exit status to allow sub-processes to send things other than 168        exit_status = if options[:highest_exit_status]69          test_results.map { |data| data.fetch(:exit_status) }.max70        else71          172        end73        exit exit_status74      end75    end76    def run_tests(group, process_number, num_processes, options)77      if group.empty?78        { stdout: '', exit_status: 0, command: nil, seed: nil }79      else80        @runner.run_tests(group, process_number, num_processes, options)81      end82    end83    def reprint_output(result, lockfile)84      lock(lockfile) do85        $stdout.puts86        $stdout.puts result[:stdout]87        $stdout.flush88      end89    end90    def lock(lockfile)91      File.open(lockfile) do |lock|92        lock.flock File::LOCK_EX93        yield94      ensure95        # This shouldn't be necessary, but appears to be96        lock.flock File::LOCK_UN97      end98    end99    def report_results(test_results, options)100      results = @runner.find_results(test_results.map { |result| result[:stdout] } * "")101      puts ""102      puts @runner.summarize_results(results)103      report_failure_rerun_commmand(test_results, options)104    end105    def report_failure_rerun_commmand(test_results, options)106      failing_sets = test_results.reject { |r| r[:exit_status] == 0 }107      return if failing_sets.none?108      if options[:verbose] || options[:verbose_rerun_command]109        puts "\n\nTests have failed for a parallel_test group. Use the following command to run the group again:\n\n"110        failing_sets.each do |failing_set|111          command = failing_set[:command]112          command = @runner.command_with_seed(command, failing_set[:seed]) if failing_set[:seed]113          puts Shellwords.shelljoin(command)114        end115      end116    end117    def report_number_of_tests(groups)118      name = @runner.test_file_name119      num_processes = groups.size120      num_tests = groups.map(&:size).sum121      tests_per_process = (num_processes == 0 ? 0 : num_tests / num_processes)122      puts "#{pluralize(num_processes, 'process')} for #{pluralize(num_tests, name)}, ~ #{pluralize(tests_per_process, name)} per process"123    end124    def pluralize(n, singular)125      if n == 1126        "1 #{singular}"127      elsif singular.end_with?('s', 'sh', 'ch', 'x', 'z')128        "#{n} #{singular}es"129      else130        "#{n} #{singular}s"131      end132    end133    # exit with correct status code so rake parallel:test && echo 123 works134    def any_test_failed?(test_results)135      test_results.any? { |result| result[:exit_status] != 0 }136    end137    def parse_options!(argv)138      newline_padding = " " * 37139      options = {}140      OptionParser.new do |opts|141        opts.banner = <<~BANNER142          Run all tests in parallel, giving each process ENV['TEST_ENV_NUMBER'] ('', '2', '3', ...)143          [optional] Only selected files & folders:144            parallel_test test/bar test/baz/xxx_text.rb145          [optional] Pass test-options and files via `--`:146            parallel_test -- -t acceptance -f progress -- spec/foo_spec.rb spec/acceptance147          Options are:148        BANNER149        opts.on("-n [PROCESSES]", Integer, "How many processes to use, default: available CPUs") { |n| options[:count] = n }150        opts.on("-p", "--pattern [PATTERN]", "run tests matching this regex pattern") { |pattern| options[:pattern] = /#{pattern}/ }151        opts.on("--exclude-pattern", "--exclude-pattern [PATTERN]", "exclude tests matching this regex pattern") { |pattern| options[:exclude_pattern] = /#{pattern}/ }152        opts.on(153          "--group-by [TYPE]",154          <<~TEXT.rstrip.split("\n").join("\n#{newline_padding}")155            group tests by:156            found - order of finding files157            steps - number of cucumber/spinach steps158            scenarios - individual cucumber scenarios159            filesize - by size of the file160            runtime - info from runtime log161            default - runtime when runtime log is filled otherwise filesize162          TEXT163        ) { |type| options[:group_by] = type.to_sym }164        opts.on("-m [FLOAT]", "--multiply-processes [FLOAT]", Float, "use given number as a multiplier of processes to run") do |multiply|165          options[:multiply] = multiply166        end167        opts.on("-s [PATTERN]", "--single [PATTERN]", "Run all matching files in the same process") do |pattern|168          (options[:single_process] ||= []) << /#{pattern}/169        end170        opts.on("-i", "--isolate", "Do not run any other tests in the group used by --single(-s)") do171          options[:isolate] = true172        end173        opts.on(174          "--isolate-n [PROCESSES]",175          Integer,176          "Use 'isolate'  singles with number of processes, default: 1."177        ) { |n| options[:isolate_count] = n }178        opts.on("--highest-exit-status", "Exit with the highest exit status provided by test run(s)") do179          options[:highest_exit_status] = true180        end181        opts.on(182          "--specify-groups [SPECS]",183          <<~TEXT.rstrip.split("\n").join("\n#{newline_padding}")184            Use 'specify-groups' if you want to specify multiple specs running in multiple185            processes in a specific formation. Commas indicate specs in the same process,186            pipes indicate specs in a new process. Cannot use with --single, --isolate, or187            --isolate-n.  Ex.188            $ parallel_test -n 3 . --specify-groups '1_spec.rb,2_spec.rb|3_spec.rb'189              Process 1 will contain 1_spec.rb and 2_spec.rb190              Process 2 will contain 3_spec.rb191              Process 3 will contain all other specs192          TEXT193        ) { |groups| options[:specify_groups] = groups }194        opts.on("--only-group INT[,INT]", Array) { |groups| options[:only_group] = groups.map(&:to_i) }195        opts.on("-e", "--exec [COMMAND]", "execute this code parallel and with ENV['TEST_ENV_NUMBER']") { |arg| options[:execute] = Shellwords.shellsplit(arg) }196        opts.on("-o", "--test-options '[OPTIONS]'", "execute test commands with those options") { |arg| options[:test_options] = Shellwords.shellsplit(arg) }197        opts.on("-t", "--type [TYPE]", "test(default) / rspec / cucumber / spinach") do |type|198          @runner = load_runner(type)199        rescue NameError, LoadError => e200          puts "Runner for `#{type}` type has not been found! (#{e})"201          abort202        end203        opts.on(204          "--suffix [PATTERN]",205          <<~TEXT.rstrip.split("\n").join("\n#{newline_padding}")206            override built in test file pattern (should match suffix):207            '_spec\.rb$' - matches rspec files208            '_(test|spec).rb$' - matches test or spec files209          TEXT210        ) { |pattern| options[:suffix] = /#{pattern}/ }211        opts.on("--serialize-stdout", "Serialize stdout output, nothing will be written until everything is done") { options[:serialize_stdout] = true }212        opts.on("--prefix-output-with-test-env-number", "Prefixes test env number to the output when not using --serialize-stdout") { options[:prefix_output_with_test_env_number] = true }213        opts.on("--combine-stderr", "Combine stderr into stdout, useful in conjunction with --serialize-stdout") { options[:combine_stderr] = true }214        opts.on("--non-parallel", "execute same commands but do not in parallel, needs --exec") { options[:non_parallel] = true }215        opts.on("--no-symlinks", "Do not traverse symbolic links to find test files") { options[:symlinks] = false }216        opts.on('--ignore-tags [PATTERN]', 'When counting steps ignore scenarios with tags that match this pattern') { |arg| options[:ignore_tag_pattern] = arg }217        opts.on("--nice", "execute test commands with low priority.") { options[:nice] = true }218        opts.on("--runtime-log [PATH]", "Location of previously recorded test runtimes") { |path| options[:runtime_log] = path }219        opts.on("--allowed-missing [INT]", Integer, "Allowed percentage of missing runtimes (default = 50)") { |percent| options[:allowed_missing_percent] = percent }220        opts.on("--unknown-runtime [FLOAT]", Float, "Use given number as unknown runtime (otherwise use average time)") { |time| options[:unknown_runtime] = time }221        opts.on("--first-is-1", "Use \"1\" as TEST_ENV_NUMBER to not reuse the default test environment") { options[:first_is_1] = true }222        opts.on("--fail-fast", "Stop all groups when one group fails (best used with --test-options '--fail-fast' if supported") { options[:fail_fast] = true }223        opts.on("--verbose", "Print debug output") { options[:verbose] = true }224        opts.on("--verbose-process-command", "Displays only the command that will be executed by each process") { options[:verbose_process_command] = true }225        opts.on("--verbose-rerun-command", "When there are failures, displays the command executed by each process that failed") { options[:verbose_rerun_command] = true }226        opts.on("--quiet", "Print only tests output") { options[:quiet] = true }227        opts.on("-v", "--version", "Show Version") do228          puts ParallelTests::VERSION229          exit 0230        end231        opts.on("-h", "--help", "Show this.") do232          puts opts233          exit 0234        end235      end.parse!(argv)236      raise "Both options are mutually exclusive: verbose & quiet" if options[:verbose] && options[:quiet]237      if options[:count] == 0238        options.delete(:count)239        options[:non_parallel] = true240      end241      files, remaining = extract_file_paths(argv)242      unless options[:execute]243        if files.empty?244          default_test_folder = @runner.default_test_folder245          if File.directory?(default_test_folder)246            files = [default_test_folder]247          else248            abort "Pass files or folders to run"249          end250        end251        options[:files] = files.map { |file_path| Pathname.new(file_path).cleanpath.to_s }252      end253      append_test_options(options, remaining)254      options[:group_by] ||= :filesize if options[:only_group]255      if options[:group_by] == :found && options[:single_process]256        raise "--group-by found and --single-process are not supported"257      end258      allowed = [:filesize, :runtime, :found]259      if !allowed.include?(options[:group_by]) && options[:only_group]260        raise "--group-by #{allowed.join(" or ")} is required for --only-group"261      end262      if options[:specify_groups] && (options.keys & [:single_process, :isolate, :isolate_count]).any?263        raise "Can't pass --specify-groups with any of these keys: --single, --isolate, or --isolate-n"264      end265      options266    end267    def extract_file_paths(argv)268      dash_index = argv.rindex("--")269      file_args_at = (dash_index || -1) + 1270      [argv[file_args_at..-1], argv[0...(dash_index || 0)]]271    end272    def extract_test_options(argv)273      dash_index = argv.index("--") || -1274      argv[dash_index + 1..-1]275    end276    def append_test_options(options, argv)277      new_opts = extract_test_options(argv)278      return if new_opts.empty?279      options[:test_options] ||= []280      options[:test_options] += new_opts281    end282    def load_runner(type)283      require "parallel_tests/#{type}/runner"284      runner_classname = type.split("_").map(&:capitalize).join.sub("Rspec", "RSpec")285      klass_name = "ParallelTests::#{runner_classname}::Runner"286      klass_name.split('::').inject(Object) { |x, y| x.const_get(y) }287    end288    def execute_command_in_parallel(command, num_processes, options)289      runs = if options[:only_group]290        options[:only_group].map { |g| g - 1 }291      else292        (0...num_processes).to_a293      end294      results = if options[:non_parallel]295        ParallelTests.with_pid_file do296          runs.map do |i|297            ParallelTests::Test::Runner.execute_command(command, i, num_processes, options)298          end299        end300      else301        execute_in_parallel(runs, runs.size, options) do |i|302          ParallelTests::Test::Runner.execute_command(command, i, num_processes, options)...

parallel_tests@3.11.1.rbi

Source:parallel_tests@3.11.1.rbi

...24  private25  def any_test_failed?(test_results); end26  def append_test_options(options, argv); end27  def detailed_duration(seconds); end28  def execute_command_in_parallel(command, num_processes, options); end29  def execute_in_parallel(items, num_processes, options); end30  def extract_file_paths(argv); end31  def extract_test_options(argv); end32  def final_fail_message; end33  def first_is_1?; end34  def handle_interrupt; end35  def load_runner(type); end36  def lock(lockfile); end37  def parse_options!(argv); end38  def pluralize(n, singular); end39  def report_failure_rerun_commmand(test_results, options); end40  def report_number_of_tests(groups); end41  def report_results(test_results, options); end42  def report_time_taken(&block); end...

execute_command_in_parallel

Using AI Code Generation

1ParallelTests.execute_command_in_parallel("ls -l")2ParallelTests.execute_command_in_parallel("ls -l")3ParallelTests.execute_command_in_parallel("ls -l")4ParallelTests.execute_command_in_parallel("ls -l")5ParallelTests.execute_command_in_parallel("ls -l")6ParallelTests.execute_command_in_parallel("ls -l")7ParallelTests.execute_command_in_parallel("ls -l")8ParallelTests.execute_command_in_parallel("ls -l")9ParallelTests.execute_command_in_parallel("ls -l")10ParallelTests.execute_command_in_parallel("ls -l")11ParallelTests.execute_command_in_parallel("ls -l")12ParallelTests.execute_command_in_parallel("ls -l")13ParallelTests.execute_command_in_parallel("ls -l")14ParallelTests.execute_command_in_parallel("ls -l")

execute_command_in_parallel

Using AI Code Generation

1ParallelTests.execute_command_in_parallel(ARGV[0], ARGV[1])2ParallelTests.execute_command_in_parallel(ARGV[0], ARGV[1])3ParallelTests.execute_command_in_parallel(ARGV[0], ARGV[1])4ParallelTests.execute_command_in_parallel(ARGV[0], ARGV[1])5ParallelTests.execute_command_in_parallel(ARGV[0], ARGV[1])6ParallelTests.execute_command_in_parallel(ARGV[0], ARGV[1])7ParallelTests.execute_command_in_parallel(ARGV[0], ARGV[1])8ParallelTests.execute_command_in_parallel(ARGV[0], ARGV[1])9ParallelTests.execute_command_in_parallel(ARGV[0], ARGV[1])10ParallelTests.execute_command_in_parallel(ARGV[0], ARGV[1])11ParallelTests.execute_command_in_parallel(ARGV[0], ARGV[1])12ParallelTests.execute_command_in_parallel(ARGV[0], ARGV[1])

execute_command_in_parallel

Using AI Code Generation

1ParallelTests.execute_command_in_parallel('ls -l', 2)2ParallelTests.execute_command_in_parallel('ls -l', 2)3ParallelTests.execute_command_in_parallel('ls -l', 2)4ParallelTests.execute_command_in_parallel('ls -l', 2)5ParallelTests.execute_command_in_parallel('ls -l', 2)6ParallelTests.execute_command_in_parallel('ls -l', 2)7ParallelTests.execute_command_in_parallel('ls -l', 2)8ParallelTests.execute_command_in_parallel('ls -l', 2)9ParallelTests.execute_command_in_parallel('ls -l', 2)10ParallelTests.execute_command_in_parallel('

execute_command_in_parallel

Using AI Code Generation

1ParallelTests.execute_command_in_parallel("echo 1")2  def self.execute_command_in_parallel(command)3ParallelTests.execute_command_in_parallel("echo 1")4  def self.execute_command_in_parallel(command)

execute_command_in_parallel

Using AI Code Generation

1ParallelTests.execute_command_in_parallel("ruby 2.rb")2ParallelTests.execute_command_in_parallel("ruby 3.rb")3ParallelTests.execute_command_in_parallel("ruby 4.rb")4ParallelTests.execute_command_in_parallel("ruby 5.rb")5ParallelTests.execute_command_in_parallel("ruby 6.rb")6ParallelTests.execute_command_in_parallel("ruby 7.rb")7ParallelTests.execute_command_in_parallel("ruby 8.rb")8ParallelTests.execute_command_in_parallel("ruby 9.rb")9ParallelTests.execute_command_in_parallel("ruby 10.rb")10ParallelTests.execute_command_in_parallel("ruby 11.rb")11ParallelTests.execute_command_in_parallel("ruby 12.rb")12ParallelTests.execute_command_in_parallel("ruby 13.rb")13ParallelTests.execute_command_in_parallel("ruby 14.rb")14ParallelTests.execute_command_in_parallel("ruby 15.rb")15ParallelTests.execute_command_in_parallel("ruby 16.rb")

execute_command_in_parallel

Using AI Code Generation

1ParallelTests.execute_command_in_parallel(commands)2ParallelTests.execute_command_in_parallel(commands)3ParallelTests.execute_command_in_parallel(commands, true)4ParallelTests.execute_command_in_parallel(commands, true, true)5ParallelTests.execute_command_in_parallel(commands, true, true, true)

execute_command_in_parallel

Using AI Code Generation

1ParallelTests.execute_command_in_parallel("ls -l", 2)2ParallelTests.execute_command_in_parallel("echo 1")3  def self.execute_command_in_parallel(command)4ParallelTests.execute_command_in_parallel("echo 1")5  def self.execute_command_in_parallel(command)

execute_command_in_parallel

Using AI Code Generation

1ParallelTests.execute_command_in_parallel("ruby 2.rb")2ParallelTests.execute_command_in_parallel("ruby 3.rb")3ParallelTests.execute_command_in_parallel("ruby 4.rb")4ParallelTests.execute_command_in_parallel("ruby 5.rb")5ParallelTests.execute_command_in_parallel("ruby 6.rb")6ParallelTests.execute_command_in_parallel("ruby 7.rb")7ParallelTests.execute_command_in_parallel("ruby 8.rb")8ParallelTests.execute_command_in_parallel("ruby 9.rb")9ParallelTests.execute_command_in_parallel("ruby 10.rb")10ParallelTests.execute_command_in_parallel("ruby 11.rb")11ParallelTests.execute_command_in_parallel("ruby 12.rb")12ParallelTests.execute_command_in_parallel("ruby 13.rb")13ParallelTests.execute_command_in_parallel("ruby 14.rb")14ParallelTests.execute_command_in_parallel("ruby 15.rb")15ParallelTests.execute_command_in_parallel("ruby 16.rb")

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.