vendor/rails/actionpack/lib/action_controller/assertions/dom_assertions.rb

   1 module ActionController
   2   module Assertions
   3     module DomAssertions
   4       # Test two HTML strings for equivalency (e.g., identical up to reordering of attributes)
   5       #
   6       # ==== Examples
   7       #
   8       #   # assert that the referenced method generates the appropriate HTML string
   9       #   assert_dom_equal '<a href="http://www.example.com">Apples</a>', link_to("Apples", "http://www.example.com")
  10       #
  11       def assert_dom_equal(expected, actual, message = "")
  12         clean_backtrace do
  13           expected_dom = HTML::Document.new(expected).root
  14           actual_dom   = HTML::Document.new(actual).root
  15           full_message = build_message(message, "<?> expected to be == to\n<?>.", expected_dom.to_s, actual_dom.to_s)
  16
  17           assert_block(full_message) { expected_dom == actual_dom }
  18         end
  19       end
  20
  21       # The negated form of +assert_dom_equivalent+.
  22       #
  23       # ==== Examples
  24       #
  25       #   # assert that the referenced method does not generate the specified HTML string
  26       #   assert_dom_not_equal '<a href="http://www.example.com">Apples</a>', link_to("Oranges", "http://www.example.com")
  27       #
  28       def assert_dom_not_equal(expected, actual, message = "")
  29         clean_backtrace do
  30           expected_dom = HTML::Document.new(expected).root
  31           actual_dom   = HTML::Document.new(actual).root
  32           full_message = build_message(message, "<?> expected to be != to\n<?>.", expected_dom.to_s, actual_dom.to_s)
  33
  34           assert_block(full_message) { expected_dom != actual_dom }
  35         end
  36       end
  37     end
  38   end
  39 end