test_case_test.rb

require 'abstract_unit'
require 'controller/fake_controllers'
require 'active_support/json/decoding'
require 'rails/engine'

class TestCaseTest < ActionController::TestCase
  def self.fixture_path; end;

  class TestController < ActionController::Base
    def no_op
      render plain: 'dummy'
    end

    def set_flash
      flash["test"] = ">#{flash["test"]}<"
      render plain: 'ignore me'
    end

    def delete_flash
      flash.delete("test")
      render plain: 'ignore me'
    end

    def set_flash_now
      flash.now["test_now"] = ">#{flash["test_now"]}<"
      render plain: 'ignore me'
    end

    def set_session
      session['string'] = 'A wonder'
      session[:symbol] = 'it works'
      render plain: 'Success'
    end

    def reset_the_session
      reset_session
      render plain: 'ignore me'
    end

    def render_raw_post
      raise ActiveSupport::TestCase::Assertion, "#raw_post is blank" if request.raw_post.blank?
      render plain: request.raw_post
    end

    def render_body
      render plain: request.body.read
    end

    def test_params
      render plain: ::JSON.dump(params.to_unsafe_h)
    end

    def test_query_parameters
      render plain: ::JSON.dump(request.query_parameters)
    end

    def test_request_parameters
      render plain: request.request_parameters.inspect
    end

    def test_uri
      render plain: request.fullpath
    end

    def test_format
      render plain: request.format
    end

    def test_query_string
      render plain: request.query_string
    end

    def test_protocol
      render plain: request.protocol
    end

    def test_headers
      render plain: ::JSON.dump(request.headers.env)
    end

    def test_html_output
      render plain: <<HTML
<html>
  <body>
    <a href="/"><img src="/images/button.png" /></a>
    <div id="foo">
      <ul>
        <li class="item">hello</li>
        <li class="item">goodbye</li>
      </ul>
    </div>
    <div id="bar">
      <form action="/somewhere">
        Name: <input type="text" name="person[name]" id="person_name" />
      </form>
    </div>
  </body>
</html>
HTML
    end

    def test_xml_output
      response.content_type = "application/xml"
      render plain: <<XML
<?xml version="1.0" encoding="UTF-8"?>
<root>
  <area>area is an empty tag in HTML, raising an error if not in xml mode</area>
</root>
XML
    end

    def test_only_one_param
      render plain: (params[:left] && params[:right]) ? "EEP, Both here!" : "OK"
    end

    def test_remote_addr
      render plain: (request.remote_addr || "not specified")
    end

    def test_file_upload
      render plain: params[:file].size
    end

    def test_send_file
      send_file(File.expand_path(__FILE__))
    end

    def redirect_to_same_controller
      redirect_to controller: 'test', action: 'test_uri', id: 5
    end

    def redirect_to_different_controller
      redirect_to controller: 'fail', id: 5
    end

    def create
      head :created, location: 'created resource'
    end

    def render_cookie
      render plain: cookies["foo"]
    end

    def delete_cookie
      cookies.delete("foo")
      render plain: 'ok'
    end

    def test_without_body
      render html: '<div class="foo"></div>'.html_safe
    end

    def test_with_body
      render html: '<body class="foo"></body>'.html_safe
    end

    private

      def generate_url(opts)
        url_for(opts.merge(action: "test_uri"))
      end
  end

  def setup
    super
    @controller = TestController.new
    @request.delete_header 'PATH_INFO'
    @routes = ActionDispatch::Routing::RouteSet.new.tap do |r|
      r.draw do
        ActiveSupport::Deprecation.silence do
          get ':controller(/:action(/:id))'
        end
      end
    end
  end

  class DefaultUrlOptionsCachingController < ActionController::Base
    before_action { @dynamic_opt = 'opt' }

    def test_url_options_reset
      render plain: url_for
    end

    def default_url_options
      if defined?(@dynamic_opt)
        super.merge dynamic_opt: @dynamic_opt
      else
        super
      end
    end
  end

  def test_assert_select_without_body
    get :test_without_body

    assert_select 'body', 0
    assert_select 'div.foo'
  end

  def test_assert_select_with_body
    get :test_with_body

    assert_select 'body.foo'
  end

  def test_url_options_reset
    @controller = DefaultUrlOptionsCachingController.new
    get :test_url_options_reset
    assert_nil @request.params['dynamic_opt']
    assert_match(/dynamic_opt=opt/, @response.body)
  end

  def test_raw_post_handling
    params = Hash[:page, { name: 'page name' }, 'some key', 123]
    post :render_raw_post, params: params.dup

    assert_equal params.to_query, @response.body
  end

  def test_body_stream
    params = Hash[:page, { name: 'page name' }, 'some key', 123]

    post :render_body, params: params.dup

    assert_equal params.to_query, @response.body
  end

  def test_deprecated_body_stream
    params = Hash[:page, { name: 'page name' }, 'some key', 123]

    assert_deprecated { post :render_body, params.dup }

    assert_equal params.to_query, @response.body
  end

  def test_document_body_and_params_with_post
    post :test_params, params: { id: 1 }
    assert_equal({"id"=>"1", "controller"=>"test_case_test/test", "action"=>"test_params"}, ::JSON.parse(@response.body))
  end

  def test_document_body_with_post
    post :render_body, body: "document body"
    assert_equal "document body", @response.body
  end

  def test_deprecated_document_body_with_post
    assert_deprecated { post :render_body, "document body" }
    assert_equal "document body", @response.body
  end

  def test_document_body_with_put
    put :render_body, body: "document body"
    assert_equal "document body", @response.body
  end

  def test_deprecated_document_body_with_put
    assert_deprecated { put :render_body, "document body" }
    assert_equal "document body", @response.body
  end

  def test_head
    head :test_params
    assert_equal 200, @response.status
  end

  def test_process_without_flash
    process :set_flash
    assert_equal '><', flash['test']
  end

  def test_deprecated_process_with_flash
    assert_deprecated { process :set_flash, "GET", nil, nil, { "test" => "value" } }
    assert_equal '>value<', flash['test']
  end

  def test_process_with_flash
    process :set_flash,
      method: "GET",
      flash: { "test" => "value" }
    assert_equal '>value<', flash['test']
  end

  def test_deprecated_process_with_flash_now
    assert_deprecated { process :set_flash_now, "GET", nil, nil, { "test_now" => "value_now" } }
    assert_equal '>value_now<', flash['test_now']
  end

  def test_process_with_flash_now
    process :set_flash_now,
      method: "GET",
      flash: { "test_now" => "value_now" }
    assert_equal '>value_now<', flash['test_now']
  end

  def test_process_delete_flash
    process :set_flash
    process :delete_flash
    assert_empty flash
    assert_empty session
  end

  def test_process_with_session
    process :set_session
    assert_equal 'A wonder', session['string'], "A value stored in the session should be available by string key"
    assert_equal 'A wonder', session[:string], "Test session hash should allow indifferent access"
    assert_equal 'it works', session['symbol'], "Test session hash should allow indifferent access"
    assert_equal 'it works', session[:symbol], "Test session hash should allow indifferent access"
  end

  def test_process_with_session_arg
    assert_deprecated { process :no_op, "GET", nil, { 'string' => 'value1', symbol: 'value2' } }
    assert_equal 'value1', session['string']
    assert_equal 'value1', session[:string]
    assert_equal 'value2', session['symbol']
    assert_equal 'value2', session[:symbol]
  end

  def test_process_with_session_kwarg
    process :no_op, method: "GET", session: { 'string' => 'value1', symbol: 'value2' }
    assert_equal 'value1', session['string']
    assert_equal 'value1', session[:string]
    assert_equal 'value2', session['symbol']
    assert_equal 'value2', session[:symbol]
  end

  def test_deprecated_process_merges_session_arg
    session[:foo] = 'bar'
    assert_deprecated {
      get :no_op, nil, { bar: 'baz' }
    }
    assert_equal 'bar', session[:foo]
    assert_equal 'baz', session[:bar]
  end

  def test_process_merges_session_arg
    session[:foo] = 'bar'
    get :no_op, session: { bar: 'baz' }
    assert_equal 'bar', session[:foo]
    assert_equal 'baz', session[:bar]
  end

  def test_deprecated_merged_session_arg_is_retained_across_requests
    assert_deprecated {
      get :no_op, nil, { foo: 'bar' }
    }
    assert_equal 'bar', session[:foo]
    get :no_op
    assert_equal 'bar', session[:foo]
  end

  def test_merged_session_arg_is_retained_across_requests
    get :no_op, session: { foo: 'bar' }
    assert_equal 'bar', session[:foo]
    get :no_op
    assert_equal 'bar', session[:foo]
  end

  def test_process_overwrites_existing_session_arg
    session[:foo] = 'bar'
    get :no_op, session: { foo: 'baz' }
    assert_equal 'baz', session[:foo]
  end

  def test_session_is_cleared_from_controller_after_reset_session
    process :set_session
    process :reset_the_session
    assert_equal Hash.new, @controller.session.to_hash
  end

  def test_session_is_cleared_from_request_after_reset_session
    process :set_session
    process :reset_the_session
    assert_equal Hash.new, @request.session.to_hash
  end

  def test_response_and_request_have_nice_accessors
    process :no_op
    assert_equal @response, response
    assert_equal @request, request
  end

  def test_process_with_request_uri_with_no_params
    process :test_uri
    assert_equal "/test_case_test/test/test_uri", @response.body
  end

  def test_process_with_symbol_method
    process :test_uri, method: :get
    assert_equal "/test_case_test/test/test_uri", @response.body
  end

  def test_deprecated_process_with_request_uri_with_params
    assert_deprecated { process :test_uri, "GET", id: 7 }
    assert_equal "/test_case_test/test/test_uri/7", @response.body
  end

  def test_process_with_request_uri_with_params
    process :test_uri,
      method: "GET",
      params: { id: 7 }

    assert_equal "/test_case_test/test/test_uri/7", @response.body
  end

  def test_deprecated_process_with_request_uri_with_params_with_explicit_uri
    @request.env['PATH_INFO'] = "/explicit/uri"
    assert_deprecated { process :test_uri, "GET", id: 7 }
    assert_equal "/explicit/uri", @response.body
  end

  def test_process_with_request_uri_with_params_with_explicit_uri
    @request.env['PATH_INFO'] = "/explicit/uri"
    process :test_uri, method: "GET", params: { id: 7 }
    assert_equal "/explicit/uri", @response.body
  end

  def test_process_with_query_string
    process :test_query_string,
      method: "GET",
      params: { q: 'test' }
    assert_equal "q=test", @response.body
  end

  def test_process_with_query_string_with_explicit_uri
    @request.env['PATH_INFO'] = '/explicit/uri'
    @request.env['QUERY_STRING'] = 'q=test?extra=question'
    process :test_query_string
    assert_equal "q=test?extra=question", @response.body
  end

  def test_multiple_calls
    process :test_only_one_param, method: "GET", params: { left: true }
    assert_equal "OK", @response.body
    process :test_only_one_param, method: "GET", params: { right: true }
    assert_equal "OK", @response.body
  end

  def test_should_not_impose_childless_html_tags_in_xml
    process :test_xml_output

    begin
      $stderr = StringIO.new
      assert_select 'area' #This will cause a warning if content is processed as HTML
      $stderr.rewind && err = $stderr.read
    ensure
      $stderr = STDERR
    end

    assert err.empty?
  end

  def test_assert_generates
    assert_generates 'controller/action/5', controller: 'controller', action: 'action', id: '5'
    assert_generates 'controller/action/7', { id: "7" }, { controller: "controller", action: "action" }
    assert_generates 'controller/action/5', { controller: "controller", action: "action", id: "5", name: "bob" }, {}, { name: "bob" }
    assert_generates 'controller/action/7', { id: "7", name: "bob" }, { controller: "controller", action: "action" }, { name: "bob" }
    assert_generates 'controller/action/7', { id: "7" }, { controller: "controller", action: "action", name: "bob" }, {}
  end

  def test_assert_routing
    assert_routing 'content', controller: 'content', action: 'index'
  end

  def test_assert_routing_with_method
    with_routing do |set|
      set.draw { resources(:content) }
      assert_routing({ method: 'post', path: 'content' }, { controller: 'content', action: 'create' })
    end
  end

  def test_assert_routing_in_module
    with_routing do |set|
      set.draw do
        namespace :admin do
          get 'user' => 'user#index'
        end
      end

      assert_routing 'admin/user', controller: 'admin/user', action: 'index'
    end
  end

  def test_assert_routing_with_glob
    with_routing do |set|
      set.draw { get('*path' => "pages#show") }
      assert_routing('/company/about', { controller: 'pages', action: 'show', path: 'company/about' })
    end
  end

  def test_deprecated_params_passing
    assert_deprecated {
      get :test_params, page: { name: "Page name", month: '4', year: '2004', day: '6' }
    }
    parsed_params = ::JSON.parse(@response.body)
    assert_equal(
      {
        'controller' => 'test_case_test/test', 'action' => 'test_params',
        'page' => { 'name' => "Page name", 'month' => '4', 'year' => '2004', 'day' => '6' }
      },
      parsed_params
    )
  end

  def test_params_passing
    get :test_params, params: {
      page: {
        name: "Page name",
        month: '4',
        year: '2004',
        day: '6'
      }
    }
    parsed_params = ::JSON.parse(@response.body)
    assert_equal(
      {
        'controller' => 'test_case_test/test', 'action' => 'test_params',
        'page' => { 'name' => "Page name", 'month' => '4', 'year' => '2004', 'day' => '6' }
      },
      parsed_params
    )
  end

  def test_query_param_named_action
    get :test_query_parameters, params: {action: 'foobar'}
    parsed_params = JSON.parse(@response.body)
    assert_equal({'action' => 'foobar'}, parsed_params)
  end

  def test_request_param_named_action
    post :test_request_parameters, params: {action: 'foobar'}
    parsed_params = eval(@response.body)
    assert_equal({'action' => 'foobar'}, parsed_params)
  end

  def test_kwarg_params_passing_with_session_and_flash
    get :test_params, params: {
      page: {
        name: "Page name",
        month: '4',
        year: '2004',
        day: '6'
      }
    }, session: { 'foo' => 'bar' }, flash: { notice: 'created' }

    parsed_params = ::JSON.parse(@response.body)
    assert_equal(
      {'controller' => 'test_case_test/test', 'action' => 'test_params',
       'page' => {'name' => "Page name", 'month' => '4', 'year' => '2004', 'day' => '6'}},
      parsed_params
    )

    assert_equal 'bar', session[:foo]
    assert_equal 'created', flash[:notice]
  end

  def test_params_passing_with_fixnums
    get :test_params, params: {
      page: { name: "Page name", month: 4, year: 2004, day: 6 }
    }
    parsed_params = ::JSON.parse(@response.body)
    assert_equal(
      {'controller' => 'test_case_test/test', 'action' => 'test_params',
       'page' => {'name' => "Page name", 'month' => '4', 'year' => '2004', 'day' => '6'}},
      parsed_params
    )
  end

  def test_params_passing_with_fixnums_when_not_html_request
    get :test_params, params: { format: 'json', count: 999 }
    parsed_params = ::JSON.parse(@response.body)
    assert_equal(
      {'controller' => 'test_case_test/test', 'action' => 'test_params',
       'format' => 'json', 'count' => '999' },
      parsed_params
    )
  end

  def test_params_passing_path_parameter_is_string_when_not_html_request
    get :test_params, params: { format: 'json', id: 1 }
    parsed_params = ::JSON.parse(@response.body)
    assert_equal(
      {'controller' => 'test_case_test/test', 'action' => 'test_params',
       'format' => 'json', 'id' => '1' },
      parsed_params
    )
  end

  def test_deprecated_params_passing_path_parameter_is_string_when_not_html_request
    assert_deprecated { get :test_params, format: 'json', id: 1 }
    parsed_params = ::JSON.parse(@response.body)
    assert_equal(
      {'controller' => 'test_case_test/test', 'action' => 'test_params',
       'format' => 'json', 'id' => '1' },
      parsed_params
    )
  end

  def test_params_passing_with_frozen_values
    assert_nothing_raised do
      get :test_params, params: {
        frozen: 'icy'.freeze, frozens: ['icy'.freeze].freeze, deepfreeze: { frozen: 'icy'.freeze }.freeze
      }
    end
    parsed_params = ::JSON.parse(@response.body)
    assert_equal(
      {'controller' => 'test_case_test/test', 'action' => 'test_params',
       'frozen' => 'icy', 'frozens' => ['icy'], 'deepfreeze' => { 'frozen' => 'icy' }},
      parsed_params
    )
  end

  def test_params_passing_doesnt_modify_in_place
    page = { name: "Page name", month: 4, year: 2004, day: 6 }
    get :test_params, params: { page: page }
    assert_equal 2004, page[:year]
  end

  test "set additional HTTP headers" do
    @request.headers['Referer'] = "http://nohost.com/home"
    @request.headers['Content-Type'] = "application/rss+xml"
    get :test_headers
    parsed_env = ActiveSupport::JSON.decode(@response.body)
    assert_equal "http://nohost.com/home", parsed_env["HTTP_REFERER"]
    assert_equal "application/rss+xml", parsed_env["CONTENT_TYPE"]
  end

  test "set additional env variables" do
    @request.headers['HTTP_REFERER'] = "http://example.com/about"
    @request.headers['CONTENT_TYPE'] = "application/json"
    get :test_headers
    parsed_env = ActiveSupport::JSON.decode(@response.body)
    assert_equal "http://example.com/about", parsed_env["HTTP_REFERER"]
    assert_equal "application/json", parsed_env["CONTENT_TYPE"]
  end

  def test_mutating_content_type_headers_for_plain_text_files_sets_the_header
    @request.headers['Content-Type'] = 'text/plain'
    post :render_body, params: { name: 'foo.txt' }

    assert_equal 'text/plain', @request.headers['Content-type']
    assert_equal 'foo.txt', @request.request_parameters[:name]
    assert_equal 'render_body', @request.path_parameters[:action]
  end

  def test_mutating_content_type_headers_for_html_files_sets_the_header
    @request.headers['Content-Type'] = 'text/html'
    post :render_body, params: { name: 'foo.html' }

    assert_equal 'text/html', @request.headers['Content-type']
    assert_equal 'foo.html', @request.request_parameters[:name]
    assert_equal 'render_body', @request.path_parameters[:action]
  end

  def test_mutating_content_type_headers_for_non_registered_mime_type_raises_an_error
    assert_raises(RuntimeError) do
      @request.headers['Content-Type'] = 'type/fake'
      post :render_body, params: { name: 'foo.fake' }
    end
  end

  def test_id_converted_to_string
    get :test_params, params: {
      id: 20, foo: Object.new
    }
    assert_kind_of String, @request.path_parameters[:id]
  end

  def test_deprecared_id_converted_to_string
    assert_deprecated { get :test_params, id: 20, foo: Object.new}
    assert_kind_of String, @request.path_parameters[:id]
  end

  def test_array_path_parameter_handled_properly
    with_routing do |set|
      set.draw do
        get 'file/*path', to: 'test_case_test/test#test_params'

        ActiveSupport::Deprecation.silence do
          get ':controller/:action'
        end
      end

      get :test_params, params: { path: ['hello', 'world'] }
      assert_equal ['hello', 'world'], @request.path_parameters[:path]
      assert_equal 'hello/world', @request.path_parameters[:path].to_param
    end
  end

  def test_assert_realistic_path_parameters
    get :test_params, params: { id: 20, foo: Object.new }

    # All elements of path_parameters should use Symbol keys
    @request.path_parameters.each_key do |key|
      assert_kind_of Symbol, key
    end
  end

  def test_with_routing_places_routes_back
    assert @routes
    routes_id = @routes.object_id

    begin
      with_routing { raise 'fail' }
      fail 'Should not be here.'
    rescue RuntimeError
    end

    assert @routes
    assert_equal routes_id, @routes.object_id
  end

  def test_remote_addr
    get :test_remote_addr
    assert_equal "0.0.0.0", @response.body

    @request.remote_addr = "192.0.0.1"
    get :test_remote_addr
    assert_equal "192.0.0.1", @response.body
  end

  def test_header_properly_reset_after_remote_http_request
    get :test_params, xhr: true
    assert_nil @request.env['HTTP_X_REQUESTED_WITH']
    assert_nil @request.env['HTTP_ACCEPT']
  end

  def test_deprecated_xhr_with_params
    assert_deprecated { xhr :get, :test_params, params: { id: 1 } }

    assert_equal({"id"=>"1", "controller"=>"test_case_test/test", "action"=>"test_params"}, ::JSON.parse(@response.body))
  end

  def test_xhr_with_params
    get :test_params, params: { id: 1 }, xhr: true

    assert_equal({"id"=>"1", "controller"=>"test_case_test/test", "action"=>"test_params"}, ::JSON.parse(@response.body))
  end

  def test_xhr_with_session
    get :set_session, xhr: true

    assert_equal 'A wonder', session['string'], "A value stored in the session should be available by string key"
    assert_equal 'A wonder', session[:string], "Test session hash should allow indifferent access"
    assert_equal 'it works', session['symbol'], "Test session hash should allow indifferent access"
    assert_equal 'it works', session[:symbol], "Test session hash should allow indifferent access"
  end

  def test_deprecated_xhr_with_session
    assert_deprecated { xhr :get, :set_session }

    assert_equal 'A wonder', session['string'], "A value stored in the session should be available by string key"
    assert_equal 'A wonder', session[:string], "Test session hash should allow indifferent access"
    assert_equal 'it works', session['symbol'], "Test session hash should allow indifferent access"
    assert_equal 'it works', session[:symbol], "Test session hash should allow indifferent access"
  end

  def test_deprecated_params_reset_between_post_requests
    assert_deprecated { post :no_op, foo: "bar" }
    assert_equal "bar", @request.params[:foo]

    post :no_op
    assert @request.params[:foo].blank?
  end

  def test_params_reset_between_post_requests
    post :no_op, params: { foo: "bar" }
    assert_equal "bar", @request.params[:foo]

    post :no_op
    assert @request.params[:foo].blank?
  end

  def test_filtered_parameters_reset_between_requests
    get :no_op, params: { foo: "bar" }
    assert_equal "bar", @request.filtered_parameters[:foo]

    get :no_op, params: { foo: "baz" }
    assert_equal "baz", @request.filtered_parameters[:foo]
  end

  def test_path_params_reset_between_request
    get :test_params, params: { id: "foo" }
    assert_equal "foo", @request.path_parameters[:id]

    get :test_params
    assert_nil @request.path_parameters[:id]
  end

  def test_request_protocol_is_reset_after_request
    get :test_protocol
    assert_equal "http://", @response.body

    @request.env["HTTPS"] = "on"
    get :test_protocol
    assert_equal "https://", @response.body

    @request.env.delete("HTTPS")
    get :test_protocol
    assert_equal "http://", @response.body
  end

  def test_request_format
    get :test_format, params: { format: 'html' }
    assert_equal 'text/html', @response.body

    get :test_format, params: { format: 'json' }
    assert_equal 'application/json', @response.body

    get :test_format, params: { format: 'xml' }
    assert_equal 'application/xml', @response.body

    get :test_format
    assert_equal 'text/html', @response.body
  end

  def test_request_format_kwarg
    get :test_format, format: 'html'
    assert_equal 'text/html', @response.body

    get :test_format, format: 'json'
    assert_equal 'application/json', @response.body

    get :test_format, format: 'xml'
    assert_equal 'application/xml', @response.body

    get :test_format
    assert_equal 'text/html', @response.body
  end

  def test_request_format_kwarg_overrides_params
    get :test_format, format: 'json', params: { format: 'html' }
    assert_equal 'application/json', @response.body
  end

  def test_should_have_knowledge_of_client_side_cookie_state_even_if_they_are_not_set
    cookies['foo'] = 'bar'
    get :no_op
    assert_equal 'bar', cookies['foo']
  end

  def test_cookies_should_be_escaped_properly
    cookies['foo'] = '+'
    get :render_cookie
    assert_equal '+', @response.body
  end

  def test_should_detect_if_cookie_is_deleted
    cookies['foo'] = 'bar'
    get :delete_cookie
    assert_nil cookies['foo']
  end

  %w(controller response request).each do |variable|
    %w(get post put delete head process).each do |method|
      define_method("test_#{variable}_missing_for_#{method}_raises_error") do
        remove_instance_variable "@#{variable}"
        begin
          send(method, :test_remote_addr)
          assert false, "expected RuntimeError, got nothing"
        rescue RuntimeError => error
          assert_match(%r{@#{variable} is nil}, error.message)
        rescue => error
          assert false, "expected RuntimeError, got #{error.class}"
        end
      end
    end
  end

  FILES_DIR = File.dirname(__FILE__) + '/../fixtures/multipart'

  READ_BINARY = 'rb:binary'
  READ_PLAIN = 'r:binary'

  def test_test_uploaded_file
    filename = 'mona_lisa.jpg'
    path = "#{FILES_DIR}/#{filename}"
    content_type = 'image/png'
    expected = File.read(path)
    expected.force_encoding(Encoding::BINARY)

    file = Rack::Test::UploadedFile.new(path, content_type)
    assert_equal filename, file.original_filename
    assert_equal content_type, file.content_type
    assert_equal file.path, file.local_path
    assert_equal expected, file.read

    new_content_type = "new content_type"
    file.content_type = new_content_type
    assert_equal new_content_type, file.content_type

  end

  def test_fixture_path_is_accessed_from_self_instead_of_active_support_test_case
    TestCaseTest.stub :fixture_path, FILES_DIR do
      uploaded_file = fixture_file_upload('/mona_lisa.jpg', 'image/png')
      assert_equal File.open("#{FILES_DIR}/mona_lisa.jpg", READ_PLAIN).read, uploaded_file.read
    end
  end

  def test_test_uploaded_file_with_binary
    filename = 'mona_lisa.jpg'
    path = "#{FILES_DIR}/#{filename}"
    content_type = 'image/png'

    binary_uploaded_file = Rack::Test::UploadedFile.new(path, content_type, :binary)
    assert_equal File.open(path, READ_BINARY).read, binary_uploaded_file.read

    plain_uploaded_file = Rack::Test::UploadedFile.new(path, content_type)
    assert_equal File.open(path, READ_PLAIN).read, plain_uploaded_file.read
  end

  def test_fixture_file_upload_with_binary
    filename = 'mona_lisa.jpg'
    path = "#{FILES_DIR}/#{filename}"
    content_type = 'image/jpg'

    binary_file_upload = fixture_file_upload(path, content_type, :binary)
    assert_equal File.open(path, READ_BINARY).read, binary_file_upload.read

    plain_file_upload = fixture_file_upload(path, content_type)
    assert_equal File.open(path, READ_PLAIN).read, plain_file_upload.read
  end

  def test_fixture_file_upload_should_be_able_access_to_tempfile
    file = fixture_file_upload(FILES_DIR + "/mona_lisa.jpg", "image/jpg")
    assert file.respond_to?(:tempfile), "expected tempfile should respond on fixture file object, got nothing"
  end

  def test_fixture_file_upload
    post :test_file_upload,
      params: {
        file: fixture_file_upload(FILES_DIR + "/mona_lisa.jpg", "image/jpg")
      }
    assert_equal '159528', @response.body
  end

  def test_fixture_file_upload_relative_to_fixture_path
    TestCaseTest.stub :fixture_path, FILES_DIR do
      uploaded_file = fixture_file_upload("mona_lisa.jpg", "image/jpg")
      assert_equal File.open("#{FILES_DIR}/mona_lisa.jpg", READ_PLAIN).read, uploaded_file.read
    end
  end

  def test_fixture_file_upload_ignores_nil_fixture_path
    uploaded_file = fixture_file_upload("#{FILES_DIR}/mona_lisa.jpg", "image/jpg")
    assert_equal File.open("#{FILES_DIR}/mona_lisa.jpg", READ_PLAIN).read, uploaded_file.read
  end

  def test_deprecated_action_dispatch_uploaded_file_upload
    filename = 'mona_lisa.jpg'
    path = "#{FILES_DIR}/#{filename}"
    assert_deprecated {
      post :test_file_upload, file: Rack::Test::UploadedFile.new(path, "image/jpg", true)
    }
    assert_equal '159528', @response.body
  end

  def test_action_dispatch_uploaded_file_upload
    filename = 'mona_lisa.jpg'
    path = "#{FILES_DIR}/#{filename}"
    post :test_file_upload, params: {
      file: Rack::Test::UploadedFile.new(path, "image/jpg", true)
    }
    assert_equal '159528', @response.body
  end

  def test_test_uploaded_file_exception_when_file_doesnt_exist
    assert_raise(RuntimeError) { Rack::Test::UploadedFile.new('non_existent_file') }
  end

  def test_redirect_url_only_cares_about_location_header
    get :create
    assert_response :created

    # Redirect url doesn't care that it wasn't a :redirect response.
    assert_equal 'created resource', @response.redirect_url
    assert_equal @response.redirect_url, redirect_to_url

    # Must be a :redirect response.
    assert_raise(ActiveSupport::TestCase::Assertion) do
      assert_redirected_to 'created resource'
    end
  end
end

class ResponseDefaultHeadersTest < ActionController::TestCase
  class TestController < ActionController::Base
    def remove_header
      headers.delete params[:header]
      head :ok, 'C' => '3'
    end

    # Render a head response, but don't touch default headers
    def leave_alone
      head :ok
    end
  end

  def before_setup
    @original = ActionDispatch::Response.default_headers
    @defaults = { 'A' => '1', 'B' => '2' }
    ActionDispatch::Response.default_headers = @defaults
    super
  end

  teardown do
    ActionDispatch::Response.default_headers = @original
  end

  def setup
    super
    @controller = TestController.new
    @request.env['PATH_INFO'] = nil
    @routes = ActionDispatch::Routing::RouteSet.new.tap do |r|
      r.draw do
        ActiveSupport::Deprecation.silence do
          get ':controller(/:action(/:id))'
        end
      end
    end
  end

  test "response contains default headers" do
    get :leave_alone

    # Response headers start out with the defaults
    assert_equal @defaults.merge('Content-Type' => 'text/html'), response.headers
  end

  test "response deletes a default header" do
    get :remove_header, params: { header: 'A' }
    assert_response :ok

    # After a request, the response in the test case doesn't have the
    # defaults merged on top again.
    assert_not_includes response.headers, 'A'
    assert_includes response.headers, 'B'
    assert_includes response.headers, 'C'
  end
end

module EngineControllerTests
  class Engine < ::Rails::Engine
    isolate_namespace EngineControllerTests

    routes.draw do
      get '/' => 'bar#index'
    end
  end

  class BarController < ActionController::Base
    def index
      render plain: 'bar'
    end
  end

  class BarControllerTest < ActionController::TestCase
    tests BarController

    def test_engine_controller_route
      get :index
      assert_equal @response.body, 'bar'
    end
  end

  class BarControllerTestWithExplicitRouteSet < ActionController::TestCase
    tests BarController

    def setup
      @routes = Engine.routes
    end

    def test_engine_controller_route
      get :index
      assert_equal @response.body, 'bar'
    end
  end
end

class InferringClassNameTest < ActionController::TestCase
  def test_determine_controller_class
    assert_equal ContentController, determine_class("ContentControllerTest")
  end

  def test_determine_controller_class_with_nonsense_name
    assert_nil determine_class("HelloGoodBye")
  end

  def test_determine_controller_class_with_sensible_name_where_no_controller_exists
    assert_nil determine_class("NoControllerWithThisNameTest")
  end

  private
    def determine_class(name)
      ActionController::TestCase.determine_default_controller_class(name)
    end
end

class CrazyNameTest < ActionController::TestCase
  tests ContentController

  def test_controller_class_can_be_set_manually_not_just_inferred
    assert_equal ContentController, self.class.controller_class
  end
end

class CrazySymbolNameTest < ActionController::TestCase
  tests :content

  def test_set_controller_class_using_symbol
    assert_equal ContentController, self.class.controller_class
  end
end

class CrazyStringNameTest < ActionController::TestCase
  tests 'content'

  def test_set_controller_class_using_string
    assert_equal ContentController, self.class.controller_class
  end
end

class NamedRoutesControllerTest < ActionController::TestCase
  tests ContentController

  def test_should_be_able_to_use_named_routes_before_a_request_is_done
    with_routing do |set|
      set.draw { resources :contents }
      assert_equal 'http://test.host/contents/new', new_content_url
      assert_equal 'http://test.host/contents/1', content_url(id: 1)
    end
  end
end

class AnonymousControllerTest < ActionController::TestCase
  def setup
    @controller = Class.new(ActionController::Base) do
      def index
        render plain: params[:controller]
      end
    end.new

    @routes = ActionDispatch::Routing::RouteSet.new.tap do |r|
      r.draw do
        ActiveSupport::Deprecation.silence do
          get ':controller(/:action(/:id))'
        end
      end
    end
  end

  def test_controller_name
    get :index
    assert_equal 'anonymous', @response.body
  end
end

class RoutingDefaultsTest < ActionController::TestCase
  def setup
    @controller = Class.new(ActionController::Base) do
      def post
        render plain: request.fullpath
      end

      def project
        render plain: request.fullpath
      end
    end.new

    @routes = ActionDispatch::Routing::RouteSet.new.tap do |r|
      r.draw do
        get '/posts/:id', to: 'anonymous#post', bucket_type: 'post'
        get '/projects/:id', to: 'anonymous#project', defaults: { bucket_type: 'project' }
      end
    end
  end

  def test_route_option_can_be_passed_via_process
    get :post, params: { id: 1, bucket_type: 'post'}
    assert_equal '/posts/1', @response.body
  end

  def test_route_default_is_not_required_for_building_request_uri
    get :project, params: { id: 2 }
    assert_equal '/projects/2', @response.body
  end
end