require 'rails-dom-testing'

module ActionDispatch
  module Assertions
    autoload :ResponseAssertions, 'action_dispatch/testing/assertions/response'
    autoload :RoutingAssertions, 'action_dispatch/testing/assertions/routing'

    extend ActiveSupport::Concern

    include ResponseAssertions
    include RoutingAssertions
    include Rails::Dom::Testing::Assertions

    def html_document
      @html_document ||= if @response.content_type.to_s =~ /xml$/
        Nokogiri::XML::Document.parse(@response.body)
      else
        Nokogiri::HTML::Document.parse(@response.body)
      end
    end
  end
end

require 'rails-dom-testing'

module ActionDispatch
  module Assertions
    autoload :ResponseAssertions, 'action_dispatch/testing/assertions/response'
    autoload :RoutingAssertions, 'action_dispatch/testing/assertions/routing'

    extend ActiveSupport::Concern

    include ResponseAssertions
    include RoutingAssertions
    include Rails::Dom::Testing::Assertions

    def html_document
      @html_document ||= if @response.content_type.to_s =~ /xml\z/
        Nokogiri::XML::Document.parse(@response.body)
      else
        Nokogiri::HTML::Document.parse(@response.body)
      end
    end
  end
end

Use sufficient a regexp anchor to check `@response.content_type.to_s`
Use sufficient a regexp anchor to check `@response.content_type.to_s`

This commit follows up of ea9bc06c9a47b839d5e2db94ba6bf7e29c8f0ae9.
To check `@response.content_type.to_s` is ended with `"xml"`,
to use `\z` is sufficient.
