Module: RunLoop::Core

Defined in:
lib/run_loop/core.rb

Constant Summary collapse

START_DELIMITER = 
"OUTPUT_JSON:\n"
END_DELIMITER = 
"\nEND_OUTPUT"
SCRIPTS = 
{
  :dismiss => 'run_dismiss_location.js',
  :run_loop_host => 'run_loop_host.js',
  :run_loop_fast_uia => 'run_loop_fast_uia.js',
  :run_loop_shared_element => 'run_loop_shared_element.js',
  :run_loop_basic => 'run_loop_basic.js'
}
SCRIPTS_PATH = 
File.expand_path(File.join(File.dirname(__FILE__), '..', '..', 'scripts'))
READ_SCRIPT_PATH = 
File.join(SCRIPTS_PATH, 'read-cmd.sh')
TIMEOUT_SCRIPT_PATH = 
File.join(SCRIPTS_PATH, 'timeout3')

Class Method Summary collapse

Class Method Details

.automation_template(instruments, candidate = RunLoop::Environment.trace_template) ⇒ Object 



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# File 'lib/run_loop/core.rb', line 491

def self.automation_template(instruments, candidate=RunLoop::Environment.trace_template)
  unless candidate && File.exist?(candidate)
    candidate = default_tracetemplate(instruments)
  end
  candidate
end

.create_uia_pipe(repl_path) ⇒ Object 



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# File 'lib/run_loop/core.rb', line 328

def self.create_uia_pipe(repl_path)
  begin
    Timeout::timeout(5, RunLoop::TimeoutError) do
      loop do
        begin
          FileUtils.rm_f(repl_path)
          return repl_path if system(%Q[mkfifo "#{repl_path}"])
        rescue Errno::EINTR => _
          sleep(0.1)
        end
      end
    end
  rescue RunLoop::TimeoutError => _
    raise RunLoop::TimeoutError, 'Unable to create pipe (mkfifo failed)'
  end
end

.default_simulator(xcode = RunLoop::Xcode.new) ⇒ Object

Returns the a default simulator to target. This default needs to be one that installed by default in the current Xcode version.

Parameters:

  • xcode (RunLoop::Xcode) (defaults to: RunLoop::Xcode.new) —

    Used to detect the current xcode version.



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# File 'lib/run_loop/core.rb', line 321

def self.default_simulator(xcode=RunLoop::Xcode.new)
  ios_version = xcode.ios_version
  device = xcode.default_device

  "#{device} (#{ios_version.major}.#{ios_version.minor})"
end

.default_tracetemplate(instruments = RunLoop::Instruments.new) ⇒ Object

Raises:

  • (RuntimeError) 


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# File 'lib/run_loop/core.rb', line 498

def self.default_tracetemplate(instruments=RunLoop::Instruments.new)

  templates = instruments.templates

  if instruments.xcode.version_gte_8?
    raise(RuntimeError, %Q[

There is no Automation template for this #{instruments.xcode} version.

])
  end

  # xcrun instruments -s templates
  # Xcode >= 6 will return known, Apple defined tracetemplates as names
  #  e.g.  Automation, Zombies, Allocations
  #
  # Xcode < 6 will return known, Apple defined tracetemplates as paths.
  #
  # Xcode 6 Beta versions also return paths, but revert to 'normal'
  # behavior when GM is released.
  #
  # Xcode 7 Beta versions appear to behavior like Xcode 6 Beta versions.
  template = templates.find { |name| name == 'Automation' }
  return template if template

  candidate = templates.find do |path|
    path =~ /\/Automation.tracetemplate/ and path =~ /Xcode/
  end

  if !candidate.nil?
    return candidate.tr("\"", '').strip
  end

  raise(RuntimeError, %Q[
Expected instruments to report an Automation tracetemplate.

Please report this as bug:  https://github.com/calabash/run_loop/issues

In the bug report, include the output of:

$ xcrun xcodebuild -version
$ xcrun instruments -s templates
])
end

.escape_host_command(cmd) ⇒ Object 



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# File 'lib/run_loop/core.rb', line 388

def self.escape_host_command(cmd)
  backquote = "\\"
  cmd.gsub(backquote,backquote*4)
end

.instruments_running? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/run_loop/core.rb', line 543

def self.instruments_running?
  RunLoop::Instruments.new.instruments_running?
end

.jruby? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/run_loop/core.rb', line 345

def self.jruby?
  RUBY_PLATFORM == 'java'
end

.log_instruments_error(msg) ⇒ Object 



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# File 'lib/run_loop/core.rb', line 393

def self.log_instruments_error(msg)
  $stderr.puts "\033[31m\n\n*** #{msg} ***\n\n\033[0m"
  $stderr.flush
end

.log_run_loop_options(options, xcode) ⇒ Object 



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# File 'lib/run_loop/core.rb', line 30

def self.log_run_loop_options(options, xcode)
  return unless RunLoop::Environment.debug?
  # Ignore :sim_control b/c it is a ruby object; printing is not useful.
  ignored_keys = [:sim_control]
  options_to_log = {}
  options.each_pair do |key, value|
    next if ignored_keys.include?(key)
    options_to_log[key] = value
  end
  # Objects that override '==' cannot be printed by awesome_print
  # https://github.com/michaeldv/awesome_print/issues/154
  # RunLoop::Version overrides '=='
  options_to_log[:xcode] = xcode.version.to_s
  options_to_log[:xcode_path] = xcode.developer_dir
  message = options_to_log.ai({:sort_keys => true})
  logger = options[:logger]
  RunLoop::Logging.log_debug(logger, "\n" + message)
end

.read_response(run_loop, expected_index, empty_file_timeout = 10, search_for_property = 'index') ⇒ Object 



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# File 'lib/run_loop/core.rb', line 398

def self.read_response(run_loop, expected_index, empty_file_timeout=10, search_for_property='index')
  debug_read = RunLoop::Environment.debug_read?

  log_file = run_loop[:log_file]
  initial_offset = run_loop[:initial_offset] || 0
  offset = initial_offset

  result = nil
  loop do
    unless File.exist?(log_file) && File.size?(log_file)
      sleep(0.2)
      next
    end

    size = File.size(log_file)
    output = File.read(log_file, size-offset, offset)

    if /AXError: Could not auto-register for pid status change/.match(output)
      if /kAXErrorServerNotFound/.match(output)
        self.log_instruments_error('Accessibility is not enabled on device/simulator, please enable it.')
      end
      raise RunLoop::TimeoutError.new('AXError: Could not auto-register for pid status change')
    end

    if /Automation Instrument ran into an exception/.match(output)
      raise RunLoop::TimeoutError.new('Exception while running script')
    end

    if /FBSOpenApplicationErrorDomain error/.match(output)
      msg = "Instruments failed to launch app: 'FBSOpenApplicationErrorDomain error 8"
      if RunLoop::Environment.debug?
        self.log_instruments_error(msg)
      end
      raise RunLoop::TimeoutError.new(msg)
    end

    if /Error: Script threw an uncaught JavaScript error: unknown JavaScript exception/.match(output)
      msg = "Instruments failed to launch: because of an unknown JavaScript exception"
      if RunLoop::Environment.debug?
        self.log_instruments_error(msg)
      end
      raise RunLoop::TimeoutError.new(msg)
    end

    index_if_found = output.index(START_DELIMITER)
    if debug_read
      puts output.gsub('*', '')
      puts "Size #{size}"
      puts "offset #{offset}"
      puts "index_of #{START_DELIMITER}: #{index_if_found}"
    end

    if index_if_found

      offset = offset + index_if_found
      rest = output[index_if_found+START_DELIMITER.size..output.length]
      index_of_json = rest.index("}#{END_DELIMITER}")

      if index_of_json.nil?
        #Wait for rest of json
        sleep(0.1)
        next
      end

      json = rest[0..index_of_json]


      if debug_read
        puts "Index #{index_if_found}, Size: #{size} Offset #{offset}"

        puts ("parse #{json}")
      end

      offset = offset + json.size
      parsed_result = JSON.parse(json)
      if debug_read
        p parsed_result
      end
      json_index_if_present = parsed_result[search_for_property]
      if json_index_if_present && json_index_if_present == expected_index
        result = parsed_result
        break
      end
    else
      sleep(0.1)
    end
  end

  run_loop[:initial_offset] = offset
  RunLoop::Cache.default.write(run_loop) unless RunLoop::Environment.xtc?
  result
end

.script_for_key(key) ⇒ Object 



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# File 'lib/run_loop/core.rb', line 49

def self.script_for_key(key)
  if SCRIPTS[key].nil?
    return nil
  end
  SCRIPTS[key]
end

.validate_index_written(run_loop, index, logger) ⇒ Object 



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# File 'lib/run_loop/core.rb', line 375

def self.validate_index_written(run_loop, index, logger)
  begin
    Timeout::timeout(10, RunLoop::TimeoutError) do
      Core.read_response(run_loop, index, 10, 'last_index')
    end
    RunLoop::Logging.log_debug(logger, "validate index written for index #{index} ok")
    return true
  rescue RunLoop::TimeoutError => _
    RunLoop::Logging.log_debug(logger, "validate index written for index #{index} failed. Retrying.")
    return false
  end
end

.write_request(run_loop, cmd, logger = nil) ⇒ Object 



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# File 'lib/run_loop/core.rb', line 349

def self.write_request(run_loop, cmd, logger=nil)
  repl_path = run_loop[:repl_path]
  index = run_loop[:index]
  cmd_str = "#{index}:#{escape_host_command(cmd)}"
  RunLoop::Logging.log_debug(logger, cmd_str)
  write_succeeded = false
  2.times do |i|
    RunLoop::Logging.log_debug(logger, "Trying write of command #{cmd_str} at index #{index}")
    begin
      RunLoop::Fifo.write(repl_path, cmd_str)
      write_succeeded = validate_index_written(run_loop, index, logger)
    rescue RunLoop::Fifo::NoReaderConfiguredError,
      RunLoop::Fifo::WriteTimedOut => e
      RunLoop::Logging.log_debug(logger, "Error while writing command (retry count #{i}). #{e}")
    end
    break if write_succeeded
  end
  unless write_succeeded
    RunLoop::Logging.log_debug(logger, 'Failing...Raising RunLoop::WriteFailedError')
    raise RunLoop::WriteFailedError.new("Trying write of command #{cmd_str} at index #{index}")
  end
  run_loop[:index] = index + 1
  RunLoop::Cache.default.write(run_loop) unless RunLoop::Environment.xtc?
  index
end