Class: Screengrab::Runner

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

Constant Summary collapse

NEEDED_PERMISSIONS = 
[
  'android.permission.READ_EXTERNAL_STORAGE',
  'android.permission.WRITE_EXTERNAL_STORAGE',
  'android.permission.CHANGE_CONFIGURATION'
].freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(executor = FastlaneCore::CommandExecutor, config = Screengrab.config, android_env = Screengrab.android_environment) ⇒ Runner

Returns a new instance of Runner.



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# File 'screengrab/lib/screengrab/runner.rb', line 16

def initialize(executor = FastlaneCore::CommandExecutor,
               config = Screengrab.config,
               android_env = Screengrab.android_environment)

  @executor = executor
  @config = config
  @android_env = android_env
end

Instance Attribute Details

#number_of_retries ⇒ Object

Returns the value of attribute number_of_retries.



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# File 'screengrab/lib/screengrab/runner.rb', line 14

def number_of_retries
  @number_of_retries
end

Instance Method Details

#clear_device_previous_screenshots(device_serial, device_screenshots_paths) ⇒ Object 



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# File 'screengrab/lib/screengrab/runner.rb', line 153

def clear_device_previous_screenshots(device_serial, device_screenshots_paths)
  UI.message('Cleaning screenshots on device')

  device_screenshots_paths.each do |device_path|
    if_device_path_exists(device_serial, device_path) do |path|
      run_adb_command("adb -s #{device_serial} shell rm -rf #{path}",
                      print_all: true,
                      print_command: true)
    end
  end
end

#clear_local_previous_screenshots(device_type_dir_name) ⇒ Object 



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# File 'screengrab/lib/screengrab/runner.rb', line 121

def clear_local_previous_screenshots(device_type_dir_name)
  if @config[:clear_previous_screenshots]
    UI.message("Clearing #{device_type_dir_name} within #{@config[:output_directory]}")

    # We'll clear the temporary directory where screenshots wind up after being pulled from
    # the device as well, in case those got stranded on a previous run/failure
    ['screenshots', device_type_dir_name].each do |dir_name|
      files = screenshot_file_names_in(@config[:output_directory], dir_name)
      File.delete(*files)
    end
  end
end

#determine_external_screenshots_path(device_serial) ⇒ Object 



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# File 'screengrab/lib/screengrab/runner.rb', line 138

def determine_external_screenshots_path(device_serial)
  # macOS evaluates $foo in `echo $foo` before executing the command,
  # Windows doesn't - hence the double backslash vs. single backslash
  command = Helper.windows? ? "shell echo \$EXTERNAL_STORAGE " : "shell echo \\$EXTERNAL_STORAGE"
  device_ext_storage = run_adb_command("adb -s #{device_serial} #{command}",
                                       print_all: true,
                                       print_command: true)
  device_ext_storage = device_ext_storage.strip
  File.join(device_ext_storage, @config[:app_package_name], 'screengrab')
end

#determine_internal_screenshots_path ⇒ Object 



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# File 'screengrab/lib/screengrab/runner.rb', line 149

def determine_internal_screenshots_path
  "/data/data/#{@config[:app_package_name]}/app_screengrab"
end

#grant_permissions(device_serial) ⇒ Object 



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# File 'screengrab/lib/screengrab/runner.rb', line 209

def grant_permissions(device_serial)
  UI.message('Granting the permission necessary to change locales on the device')
  run_adb_command("adb -s #{device_serial} shell pm grant #{@config[:app_package_name]} android.permission.CHANGE_CONFIGURATION",
                  print_all: true,
                  print_command: true)

  device_api_version = run_adb_command("adb -s #{device_serial} shell getprop ro.build.version.sdk",
                                       print_all: true,
                                       print_command: true).to_i

  if device_api_version >= 23
    UI.message('Granting the permissions necessary to access device external storage')
    run_adb_command("adb -s #{device_serial} shell pm grant #{@config[:app_package_name]} android.permission.WRITE_EXTERNAL_STORAGE",
                    print_all: true,
                    print_command: true)
    run_adb_command("adb -s #{device_serial} shell pm grant #{@config[:app_package_name]} android.permission.READ_EXTERNAL_STORAGE",
                    print_all: true,
                    print_command: true)
  end
end

#if_device_path_exists(device_serial, device_path) ⇒ Object

Some device commands fail if executed against a device path that does not exist, so this helper method provides a way to conditionally execute a block only if the provided path exists on the device.



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# File 'screengrab/lib/screengrab/runner.rb', line 343

def if_device_path_exists(device_serial, device_path)
  return if run_adb_command("adb -s #{device_serial} shell ls #{device_path}",
                            print_all: false,
                            print_command: false).include?('No such file')

  yield(device_path)
rescue
  # Some versions of ADB will have a non-zero exit status for this, which will cause the executor to raise.
  # We can safely ignore that and treat it as if it returned 'No such file'
end

#install_apks(device_serial, app_apk_path, tests_apk_path) ⇒ Object 



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# File 'screengrab/lib/screengrab/runner.rb', line 183

def install_apks(device_serial, app_apk_path, tests_apk_path)
  UI.message('Installing app APK')
  apk_install_output = run_adb_command("adb -s #{device_serial} install -t -r #{app_apk_path.shellescape}",
                                       print_all: true,
                                       print_command: true)
  UI.user_error!("App APK could not be installed") if apk_install_output.include?("Failure [")

  UI.message('Installing tests APK')
  apk_install_output = run_adb_command("adb -s #{device_serial} install -t -r #{tests_apk_path.shellescape}",
                                       print_all: true,
                                       print_command: true)
  UI.user_error!("Tests APK could not be installed") if apk_install_output.include?("Failure [")
end

#move_pulled_screenshots(pull_dir, device_type_dir_name) ⇒ Object 



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# File 'screengrab/lib/screengrab/runner.rb', line 309

def move_pulled_screenshots(pull_dir, device_type_dir_name)
  # Glob pattern that finds the pulled screenshots directory for each locale
  # Possible matches:
  #   [pull_dir]/en-US/images/screenshots
  #   [pull_dir]/screengrab/en-US/images/screenshots
  screenshots_dir_pattern = File.join(pull_dir, '**', "screenshots")

  Dir.glob(screenshots_dir_pattern, File::FNM_CASEFOLD).each do |screenshots_dir|
    src_screenshots = Dir.glob(File.join(screenshots_dir, '*.png'), File::FNM_CASEFOLD)

    # The :output_directory is the final location for the screenshots, so we begin by replacing
    # the temp directory portion of the path, with the output directory
    dest_dir = screenshots_dir.gsub(pull_dir, @config[:output_directory])

    # Different versions of adb are inconsistent about whether they will pull down the containing
    # directory for the screenshots, so we'll try to remove that path from the directory name when
    # creating the destination path.
    # See: https://github.com/fastlane/fastlane/pull/4915#issuecomment-236368649
    dest_dir = dest_dir.gsub(%r{(app_)?screengrab/}, '')

    # We then replace the last segment of the screenshots directory path with the device_type
    # specific name, as expected by supply
    #
    # (Moved to: fastlane/metadata/android/en-US/images/phoneScreenshots)
    dest_dir = File.join(File.dirname(dest_dir), device_type_dir_name)

    FileUtils.mkdir_p(dest_dir)
    FileUtils.cp_r(src_screenshots, dest_dir)
    UI.success("Screenshots copied to #{dest_dir}")
  end
end

#pull_screenshots_from_device(device_serial, device_screenshots_paths, device_type_dir_name) ⇒ Object 



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# File 'screengrab/lib/screengrab/runner.rb', line 270

def pull_screenshots_from_device(device_serial, device_screenshots_paths, device_type_dir_name)
  UI.message("Pulling captured screenshots from the device")
  starting_screenshot_count = screenshot_file_names_in(@config[:output_directory], device_type_dir_name).length

  UI.verbose("Starting screenshot count is: #{starting_screenshot_count}")

  # Make a temp directory into which to pull the screenshots before they are moved to their final location.
  # This makes directory cleanup easier, as the temp directory will be removed when the block completes.
  Dir.mktmpdir do |tempdir|
    device_screenshots_paths.each do |device_path|
      if_device_path_exists(device_serial, device_path) do |path|
        run_adb_command("adb -s #{device_serial} pull #{path} #{tempdir}",
                        print_all: false,
                        print_command: true)
      end
    end

    # The SDK can't 100% determine what kind of device it is running on relative to the categories that
    # supply and Google Play care about (phone, 7" tablet, TV, etc.).
    #
    # Therefore, we'll move the pulled screenshots from their genericly named folder to one named by the
    # user provided device_type option value to match the directory structure that supply expects
    move_pulled_screenshots(tempdir, device_type_dir_name)
  end

  ending_screenshot_count = screenshot_file_names_in(@config[:output_directory], device_type_dir_name).length

  UI.verbose("Ending screenshot count is: #{ending_screenshot_count}")

  # Because we can't guarantee the screenshot output directory will be empty when we pull, we determine
  # success based on whether there are more screenshots there than when we started.
  if starting_screenshot_count == ending_screenshot_count
    UI.error("Make sure you've used Screengrab.screenshot() in your tests and that your expected tests are being run.")
    UI.abort_with_message!("No screenshots were detected 📷❌")
  end

  ending_screenshot_count - starting_screenshot_count
end

#run ⇒ Object 



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# File 'screengrab/lib/screengrab/runner.rb', line 25

def run
  FastlaneCore::PrintTable.print_values(config: @config, hide_keys: [], title: "Summary for screengrab #{Fastlane::VERSION}")

  app_apk_path = @config.fetch(:app_apk_path, ask: false)
  tests_apk_path = @config.fetch(:tests_apk_path, ask: false)
  discovered_apk_paths = Dir[File.join('**', '*.apk')]

  apk_paths_provided = app_apk_path && !app_apk_path.empty? && tests_apk_path && !tests_apk_path.empty?

  unless apk_paths_provided || discovered_apk_paths.any?
    UI.error('No APK paths were provided and no APKs could be found')
    UI.error("Please provide APK paths with 'app_apk_path' and 'tests_apk_path' and make sure you have assembled APKs prior to running this command.")
    return
  end

  test_classes_to_use = @config[:use_tests_in_classes]
  test_packages_to_use = @config[:use_tests_in_packages]

  if test_classes_to_use && test_classes_to_use.any? && test_packages_to_use && test_packages_to_use.any?
    UI.error("'use_tests_in_classes' and 'use_tests_in_packages' can not be combined. Please use one or the other.")
    return
  end

  if (test_classes_to_use.nil? || test_classes_to_use.empty?) && (test_packages_to_use.nil? || test_packages_to_use.empty?)
    UI.important('Limiting the test classes run by `screengrab` to just those that generate screenshots can make runs faster.')
    UI.important('Consider using the :use_tests_in_classes or :use_tests_in_packages option, and organize your tests accordingly.')
  end

  device_type_dir_name = "#{@config[:device_type]}Screenshots"
  clear_local_previous_screenshots(device_type_dir_name)

  device_serial = select_device

  device_screenshots_paths = [
    determine_external_screenshots_path(device_serial),
    determine_internal_screenshots_path
  ]

  clear_device_previous_screenshots(device_serial, device_screenshots_paths)

  app_apk_path ||= select_app_apk(discovered_apk_paths)
  tests_apk_path ||= select_tests_apk(discovered_apk_paths)

  validate_apk(app_apk_path)

  run_tests(device_serial, app_apk_path, tests_apk_path, test_classes_to_use, test_packages_to_use, @config[:launch_arguments])

  number_of_screenshots = pull_screenshots_from_device(device_serial, device_screenshots_paths, device_type_dir_name)

  ReportsGenerator.new.generate

  UI.success("Captured #{number_of_screenshots} screenshots! 📷✨")
end

#run_adb_command(command, print_all: false, print_command: false) ⇒ Object 



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# File 'screengrab/lib/screengrab/runner.rb', line 354

def run_adb_command(command, print_all: false, print_command: false)
  adb_path = @android_env.adb_path.chomp("adb")
  output = @executor.execute(command: adb_path + command,
                             print_all: print_all,
                             print_command: print_command) || ''
  output.lines.reject do |line|
    # Debug/Warning output from ADB}
    line.start_with?('adb: ')
  end.join('') # Lines retain their newline chars
end

#run_tests(device_serial, app_apk_path, tests_apk_path, test_classes_to_use, test_packages_to_use, launch_arguments) ⇒ Object 



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# File 'screengrab/lib/screengrab/runner.rb', line 230

def run_tests(device_serial, app_apk_path, tests_apk_path, test_classes_to_use, test_packages_to_use, launch_arguments)
  unless @config[:reinstall_app]
    install_apks(device_serial, app_apk_path, tests_apk_path)
    grant_permissions(device_serial)
  end

  @config[:locales].each do |locale|
    if @config[:reinstall_app]
      uninstall_apks(device_serial, @config[:app_package_name], @config[:tests_package_name])
      install_apks(device_serial, app_apk_path, tests_apk_path)
      grant_permissions(device_serial)
    end
    run_tests_for_locale(locale, device_serial, test_classes_to_use, test_packages_to_use, launch_arguments)
  end
end

#run_tests_for_locale(locale, device_serial, test_classes_to_use, test_packages_to_use, launch_arguments) ⇒ Object 



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# File 'screengrab/lib/screengrab/runner.rb', line 246

def run_tests_for_locale(locale, device_serial, test_classes_to_use, test_packages_to_use, launch_arguments)
  UI.message("Running tests for locale: #{locale}")

  instrument_command = ["adb -s #{device_serial} shell am instrument --no-window-animation -w",
                        "-e testLocale #{locale.tr('-', '_')}",
                        "-e endingLocale #{@config[:ending_locale].tr('-', '_')}"]
  instrument_command << "-e class #{test_classes_to_use.join(',')}" if test_classes_to_use
  instrument_command << "-e package #{test_packages_to_use.join(',')}" if test_packages_to_use
  instrument_command << launch_arguments.map { |item| '-e ' + item }.join(' ') if launch_arguments
  instrument_command << "#{@config[:tests_package_name]}/#{@config[:test_instrumentation_runner]}"

  test_output = run_adb_command(instrument_command.join(" \\\n"),
                                print_all: true,
                                print_command: true)

  if test_output.include?("FAILURES!!!")
    if @config[:exit_on_test_failure]
      UI.test_failure!("Tests failed for locale #{locale} on device #{device_serial}")
    else
      UI.error("Tests failed")
    end
  end
end

#screenshot_file_names_in(output_directory, device_type) ⇒ Object 



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# File 'screengrab/lib/screengrab/runner.rb', line 134

def screenshot_file_names_in(output_directory, device_type)
  Dir.glob(File.join(output_directory, '**', device_type, '*.png'), File::FNM_CASEFOLD)
end

#select_app_apk(discovered_apk_paths) ⇒ Object 



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# File 'screengrab/lib/screengrab/runner.rb', line 111

def select_app_apk(discovered_apk_paths)
  UI.important("To not be asked about this value, you can specify it using 'app_apk_path'")
  UI.select('Select your debug app APK', discovered_apk_paths)
end

#select_device ⇒ Object 



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# File 'screengrab/lib/screengrab/runner.rb', line 79

def select_device
  devices = run_adb_command("adb devices -l", print_all: true, print_command: true).split("\n")
  # the first output by adb devices is "List of devices attached" so remove that and any adb startup output
  devices.reject! do |device|
    [
      'server is out of date',    # The adb server is out of date and must be restarted
      'unauthorized',             # The device has not yet accepted ADB control
      'offline',                  # The device is offline, skip it
      '* daemon',                 # Messages printed when the daemon is starting up
      'List of devices attached', # Header of table for data we want
      "doesn't match this client" # Message printed when there is an ADB client/server version mismatch
    ].any? { |status| device.include?(status) }
  end

  UI.user_error!('There are no connected and authorized devices or emulators') if devices.empty?

  devices.select! { |d| d.include?(@config[:specific_device]) } if @config[:specific_device]

  UI.user_error!("No connected devices matched your criteria: #{@config[:specific_device]}") if devices.empty?

  if devices.length > 1
    UI.important("Multiple connected devices, selecting the first one")
    UI.important("To specify which connected device to use, use the -s (specific_device) config option")
  end

  # grab the serial number. the lines of output can look like these:
  # 00c22d4d84aec525       device usb:2148663295X product:bullhead model:Nexus_5X device:bullhead
  # 192.168.1.100:5555       device usb:2148663295X product:bullhead model:Nexus_5X device:genymotion
  # emulator-5554       device usb:2148663295X product:bullhead model:Nexus_5X device:emulator
  devices[0].match(/^\S+/)[0]
end

#select_tests_apk(discovered_apk_paths) ⇒ Object 



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# File 'screengrab/lib/screengrab/runner.rb', line 116

def select_tests_apk(discovered_apk_paths)
  UI.important("To not be asked about this value, you can specify it using 'tests_apk_path'")
  UI.select('Select your debug tests APK', discovered_apk_paths)
end

#uninstall_apks(device_serial, app_package_name, tests_package_name) ⇒ Object 



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# File 'screengrab/lib/screengrab/runner.rb', line 197

def uninstall_apks(device_serial, app_package_name, tests_package_name)
  UI.message('Uninstalling app APK')
  run_adb_command("adb -s #{device_serial} uninstall #{app_package_name}",
                  print_all: true,
                  print_command: true)

  UI.message('Uninstalling tests APK')
  run_adb_command("adb -s #{device_serial} uninstall #{tests_package_name}",
                  print_all: true,
                  print_command: true)
end

#validate_apk(app_apk_path) ⇒ Object 



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# File 'screengrab/lib/screengrab/runner.rb', line 165

def validate_apk(app_apk_path)
  unless @android_env.aapt_path
    UI.important("The `aapt` command could not be found on your system, so your app APK could not be validated")
    return
  end

  UI.message('Validating app APK')
  apk_permissions = @executor.execute(command: "#{@android_env.aapt_path} dump permissions #{app_apk_path}",
                                      print_all: true,
                                      print_command: true)

  missing_permissions = NEEDED_PERMISSIONS.reject { |needed| apk_permissions.include?(needed) }

  if missing_permissions.any?
    UI.user_error!("The needed permission(s) #{missing_permissions.join(', ')} could not be found in your app APK")
  end
end