Module: Capybara::Screenshot::Diff::Vcs

Defined in:
lib/capybara/screenshot/diff/vcs.rb

Constant Summary collapse

SILENCE_ERRORS = 
Os::ON_WINDOWS ? "2>nul" : "2>/dev/null"

Class Method Summary collapse

Class Method Details

.checkout_vcs(root, screenshot_path, checkout_path) ⇒ Object 



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# File 'lib/capybara/screenshot/diff/vcs.rb', line 9

def self.checkout_vcs(root, screenshot_path, checkout_path)
  if svn?(root)
    restore_svn_revision(screenshot_path, checkout_path)
  else
    restore_git_revision(screenshot_path, checkout_path, root: root)
  end
end

.restore_git_revision(screenshot_path, checkout_path = screenshot_path, root:) ⇒ Object 



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# File 'lib/capybara/screenshot/diff/vcs.rb', line 23

def self.restore_git_revision(screenshot_path, checkout_path = screenshot_path, root:)
  vcs_file_path = screenshot_path.relative_path_from(root)
  redirect_target = "#{checkout_path} #{SILENCE_ERRORS}"
  show_command = "git show HEAD~0:./#{vcs_file_path}"

  Dir.chdir(root) do
    if Screenshot.use_lfs
      system("#{show_command} > #{checkout_path}.tmp #{SILENCE_ERRORS}", exception: !!ENV["DEBUG"])

      `git lfs smudge < #{checkout_path}.tmp > #{redirect_target}` if $CHILD_STATUS == 0

      File.delete "#{checkout_path}.tmp"
    else
      system("#{show_command} > #{redirect_target}", exception: !!ENV["DEBUG"])
    end
  end

  if $CHILD_STATUS != 0
    checkout_path.delete if checkout_path.exist?
    false
  else
    true
  end
end

.restore_svn_revision(screenshot_path, checkout_path) ⇒ Object 



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# File 'lib/capybara/screenshot/diff/vcs.rb', line 48

def self.restore_svn_revision(screenshot_path, checkout_path)
  committed_file_name = screenshot_path + "../.svn/text-base/" + "#{screenshot_path.basename}.svn-base"
  if committed_file_name.exist?
    FileUtils.cp(committed_file_name, checkout_path)
    return true
  end

  svn_info = `svn info #{screenshot_path} #{SILENCE_ERRORS}`
  if svn_info.present?
    wc_root = svn_info.slice(/(?<=Working Copy Root Path: ).*$/)
    checksum = svn_info.slice(/(?<=Checksum: ).*$/)

    if checksum
      committed_file_name = "#{wc_root}/.svn/pristine/#{checksum[0..1]}/#{checksum}.svn-base"
      FileUtils.cp(committed_file_name, checkout_path)
      return true
    end
  end

  false
end

.svn?(root) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/capybara/screenshot/diff/vcs.rb', line 17

def self.svn?(root)
  (root / ".svn").exist?
end