Class: ParallelSpecs::Test::Runner

Inherits:
Object
  • Object
show all
Defined in:
lib/parallel_specs/test/runner.rb

Direct Known Subclasses

RSpec::Runner

Constant Summary collapse

RuntimeLogTooSmallError = 
Class.new(StandardError)
RuntimeLogParseError = 
Class.new(StandardError)
MissingTestFileError = 
Class.new(ArgumentError)
OUTPUT_MUTEX = 
Mutex.new

Class Method Summary collapse

Class Method Details

.command_with_seed(command, seed) ⇒ Object 



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# File 'lib/parallel_specs/test/runner.rb', line 106

def command_with_seed(command, seed)
  [*remove_command_arguments(command, "--seed"), "--seed", seed]
end

.execute_command(cmd, process_number, num_processes, options) ⇒ Object 



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# File 'lib/parallel_specs/test/runner.rb', line 60

def execute_command(cmd, process_number, num_processes, options)
  env = {
    "TEST_ENV_NUMBER" => test_env_number(process_number),
    "PARALLEL_SPECS_GROUPS" => num_processes.to_s,
    "PARALLEL_SPECS_PID_FILE" => ParallelSpecs.pid_file_path
  }

  if (dashboard_event_files = options[:dashboard_event_files])
    env["PARALLEL_SPECS_DASHBOARD_EVENT_LOG"] = dashboard_event_files.fetch(process_number)
  end

  execute_command_and_capture_output(env, cmd, options)
end

.execute_command_and_capture_output(env, cmd, options) ⇒ Object 



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# File 'lib/parallel_specs/test/runner.rb', line 74

def execute_command_and_capture_output(env, cmd, options)
  pid = nil
  output = IO.popen(env, cmd, err: [:child, :out]) do |io|
    pid = io.pid
    ParallelSpecs.pids.add(pid)
    capture_output(io, options[:dashboard])
  ensure
    ParallelSpecs.pids.delete(pid) if pid
  end

  status = $?
  exit_status = if status.exitstatus
    status.exitstatus
  elsif status.termsig
    status.termsig + 128
  else
    1
  end

  {env: env, stdout: output, exit_status: exit_status, command: cmd, seed: seed_from(output)}
end

.find_results(test_output) ⇒ Object 



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# File 'lib/parallel_specs/test/runner.rb', line 110

def find_results(test_output)
  test_output.lines.filter_map do |line|
    line = line.chomp.gsub(/\e\[\d+m/, "")
    line if line_is_result?(line)
  end
end

.print_command(command, env = {}) ⇒ Object 



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# File 'lib/parallel_specs/test/runner.rb', line 96

def print_command(command, env = {})
  env_string = rerun_env(env).map { |key, value| "#{key}=#{Shellwords.escape(value)}" }.join(" ")
  command_string = Shellwords.shelljoin(command)
  puts [env_string, command_string].reject(&:empty?).join(" ")
end

.rerun_command(command, seed: nil) ⇒ Object 



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# File 'lib/parallel_specs/test/runner.rb', line 102

def rerun_command(command, seed: nil)
  seed ? command_with_seed(command, seed) : command
end

.summarize_results(results) ⇒ Object 



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# File 'lib/parallel_specs/test/runner.rb', line 117

def summarize_results(results)
  sum_up_results(results).sort.map { |word, count| "#{count} #{word}#{"s" if count != 1}" }.join(", ")
end

.tests_in_groups(tests, num_groups, options = {}) ⇒ Object 



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# File 'lib/parallel_specs/test/runner.rb', line 15

def tests_in_groups(tests, num_groups, options = {})
  ParallelSpecs::Grouper.in_even_groups_by_size(tests_with_size(tests, options), num_groups)
end

.tests_with_size(tests, options) ⇒ Object 



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# File 'lib/parallel_specs/test/runner.rb', line 19

def tests_with_size(tests, options)
  tests = find_tests(tests, options)

  case options[:group_by]
  when :found
    tests.map! { |test| [test, 1] }
  when :runtime
    sort_by_runtime(
      tests,
      runtimes(tests, options),
      options.merge(allowed_missing: (options[:allowed_missing_percent] || 50) / 100.0)
    )
  when :filesize
    sort_by_filesize(tests)
  when nil
    begin
      known_runtimes = runtimes(tests, options)
    rescue Errno::ENOENT
      warn "parallel_specs: runtime log #{runtime_log_path(options)} was not found; falling back to filesize grouping" if options[:runtime_log]
      known_runtimes = {}
    rescue RuntimeLogParseError => e
      warn "parallel_specs: unable to use runtime log #{runtime_log_path(options)}: #{e.message}; falling back to filesize grouping"
      known_runtimes = {}
    rescue => e
      warn "parallel_specs: unable to load runtime log #{runtime_log_path(options)}: #{e.class}: #{e.message}"
      raise
    end

    if known_runtimes.size * 1.5 > tests.size
      puts "Using recorded test runtime"
      sort_by_runtime(tests, known_runtimes)
    else
      sort_by_filesize(tests)
    end
  else
    raise ArgumentError, "Unsupported option #{options[:group_by]}"
  end

  tests
end