Module: Capybara::Screenshot::Diff::Utils

Defined in:
lib/capybara/screenshot/diff/drivers/utils.rb

Class Method Summary collapse

Class Method Details

.detect_available_drivers ⇒ Object 



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# File 'lib/capybara/screenshot/diff/drivers/utils.rb', line 7

def self.detect_available_drivers
  result = []
  begin
    result << :vips if defined?(Vips) || require("vips")
  rescue LoadError
    # vips not present
    Object.send(:remove_const, :Vips) if defined?(Vips)
  end
  begin
    result << :chunky_png if defined?(ChunkyPNG) || require("chunky_png")
  rescue LoadError
    # chunky_png not present
    Object.send(:remove_const, :ChunkyPNG) if defined?(ChunkyPNG)
  end
  result
end

.detect_test_framework_assert ⇒ Object 



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# File 'lib/capybara/screenshot/diff/drivers/utils.rb', line 40

def self.detect_test_framework_assert
  require "minitest"
  ::Minitest::Assertion
rescue
  ::RuntimeError
end

.find_driver_class_for(driver) ⇒ Object 



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# File 'lib/capybara/screenshot/diff/drivers/utils.rb', line 24

def self.find_driver_class_for(driver)
  driver = AVAILABLE_DRIVERS.first if driver == :auto

  LOADED_DRIVERS[driver] ||=
    case driver
    when :chunky_png
      require "capybara/screenshot/diff/drivers/chunky_png_driver"
      Drivers::ChunkyPNGDriver
    when :vips
      require "capybara/screenshot/diff/drivers/vips_driver"
      Drivers::VipsDriver
    else
      fail "Wrong adapter #{driver.inspect}. Available adapters: #{AVAILABLE_DRIVERS.inspect}"
    end
end