require "abstract_unit" module PeopleHelper def title(text) content_tag(:h1, text) end def homepage_path people_path end def homepage_url people_url end def link_to_person(person) link_to person.name, person end end class PeopleHelperTest < ActionView::TestCase def test_title assert_equal "

Ruby on Rails

", title("Ruby on Rails") end def test_homepage_path with_test_route_set do assert_equal "/people", homepage_path end end def test_homepage_url with_test_route_set do assert_equal "http://test.host/people", homepage_url end end def test_link_to_person with_test_route_set do person = Struct.new(:name) { extend ActiveModel::Naming def to_model; self; end def persisted?; true; end def self.name; "Minitest::Mock"; end }.new "David" the_model = nil extend Module.new { define_method(:minitest_mock_path) { |model, *args| the_model = model "/people/1" } } assert_equal 'David', link_to_person(person) assert_equal person, the_model end end private def with_test_route_set with_routing do |set| set.draw do get "people", to: "people#index", as: :people end yield end end end class CrazyHelperTest < ActionView::TestCase tests PeopleHelper def test_helper_class_can_be_set_manually_not_just_inferred assert_equal PeopleHelper, self.class.helper_class end end class CrazySymbolHelperTest < ActionView::TestCase tests :people def test_set_helper_class_using_symbol assert_equal PeopleHelper, self.class.helper_class end end class CrazyStringHelperTest < ActionView::TestCase tests "people" def test_set_helper_class_using_string assert_equal PeopleHelper, self.class.helper_class end end