Class: NoRegrets

Inherits:
Object
  • Object
show all
Defined in:
lib/no_regrets.rb,
lib/no_regrets/image_diff.rb

Defined Under Namespace

Classes: ImageDiff, ScreenshotMismatchError

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(screenshot_name) ⇒ NoRegrets

Returns a new instance of NoRegrets.



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# File 'lib/no_regrets.rb', line 36

def initialize(screenshot_name)
  @screenshot_name = screenshot_name
end

Class Method Details

.check_screenshot_for_regressions(screenshot_name) ⇒ Object 



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# File 'lib/no_regrets.rb', line 11

def self.check_screenshot_for_regressions(screenshot_name)
  new(screenshot_name).check_screenshot_for_regressions
end

Instance Method Details

#check_screenshot_for_regressions ⇒ Object 



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# File 'lib/no_regrets.rb', line 15

def check_screenshot_for_regressions
  path = Capybara.current_session.save_screenshot("#{screenshot_name}.png")
  sha1 = Digest::SHA1.hexdigest(File.read(path))
  if !File.exists?(cache_file_path(sha1))
    FileUtils.mkdir_p(cache_dir)
    FileUtils.cp(path, cache_file_path(sha1))
  end

  if old_sha1 && old_sha1 != sha1
    raise_error(path, sha1)
  end

  FileUtils.rm(path)
  if !fingerprints[screenshot_name]
    puts "Saving a new screenshot fingerprint for \"#{screenshot_name}\" in #{fingerprint_file_path}"
  end
  fingerprints[screenshot_name] = sha1

  write_fingerprints_file(fingerprints)
end