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Contents
# frozen_string_literal: true
module PageMagic
# class WatchedElementDefinition - Contains the specification the for checking if an subject has changed
class Watcher
attr_reader :name, :context, :observed_value, :block
# @param [Symbol] name the of the subject being checked
# @example
# Watcher.new(:url) do
# session.url
# end
def initialize(name, context:, &block)
@name = name
@context = context
@block = block
end
# check current value of watched element. The result of the check can be accessed
# by calling {PageMagic::Watcher#last}
# if a block was specified to the constructor then this will be executed.
# @return [PageMagic::Watcher]
def check
@observed_value = context.instance_eval(&block)
self
end
# @param [Object] other candidate for equality check
# @return [Boolen] true of the candiate is equal ot this one.
def ==(other)
other.is_a?(Watcher) &&
name == other.name &&
block == other.block
end
end
end
Version data entries
12 entries across 12 versions & 1 rubygems