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Contents
module Screengem
#
# Singleton that gives the ability to get references to screen elements.
#
# On initialization generate a factory method for each screen element. If the screen element
# defines a visit_path method then we wrap the screen element to support auto visit.
#
# Examples:
#
# def login_page
# ScreenElements::LoginPage.new
# end
#
# def login_page
# Screengem::AutomaticVisit.new(ScreenElements::LoginPage.new)
# end
#
class ScreenElements
include ::Singleton
def initialize
generated_method_names = []
Screengem::ScreenElement.descendants.each do |screen_element_class|
class_name = screen_element_class.name
# Skip any anonymous classes. We can't do anything with them. Probably they're from testing.
next if class_name.blank?
method_name = class_name.demodulize.underscore
# Create some safety by detecting and failing fast for duplicate creation method names
if generated_method_names.include?(method_name)
raise "Name collision: two screen elements resolve to '#{method_name}'."
end
generated_method_names << method_name
if auto_visit?(screen_element_class)
class_eval(<<~RUBY, __FILE__, __LINE__ + 1)
def #{method_name}(*args)
Screengem::AutomaticVisit.new(#{class_name}.new(*args))
end
RUBY
else
class_eval(<<~RUBY, __FILE__, __LINE__ + 1)
def #{method_name}(*args)
#{class_name}.new(*args)
end
RUBY
end
end
end
private
def auto_visit?(screen_element)
screen_element.instance_methods(false).include?(:visit_path)
end
end
end
Version data entries
5 entries across 5 versions & 1 rubygems