Update test generators to use ActionDispatch::IntegrationTest

In Rails 5.1 `ActionController::TestCase` will be moved out of Rails
into it's own gem. Please use `ActionDispatch::IntegrationTest` going
forward.

This changes the generators to use `ActionDispatch::IntegrationTest` and
the required URL setup (rather than symbols) for each of the controller
actions.

Updated fix to #22076.

8 files changed, 61 insertions, 49 deletions

diff --git a/railties/lib/rails/generators/named_base.rb b/railties/lib/rails/generators/named_base.rb
index 243694f38e..658d883883 100644
--- a/railties/lib/rails/generators/named_base.rb
+++ b/railties/lib/rails/generators/named_base.rb
@@ -129,6 +129,18 @@ module Rails
           uncountable? ? "#{plural_table_name}_index" : plural_table_name
         end
 
+        def show_helper
+          "#{singular_table_name}_url(@#{singular_table_name})"
+        end
+
+        def edit_helper
+          "edit_#{show_helper}"
+        end
+
+        def new_helper
+          "new_#{singular_table_name}_url"
+        end
+
         def singular_table_name
           @singular_table_name ||= (pluralize_table_names? ? table_name.singularize : table_name)
         end
diff --git a/railties/lib/rails/generators/test_unit/controller/templates/functional_test.rb b/railties/lib/rails/generators/test_unit/controller/templates/functional_test.rb
index 5a8a3ca5e0..4f2ceb8589 100644
--- a/railties/lib/rails/generators/test_unit/controller/templates/functional_test.rb
+++ b/railties/lib/rails/generators/test_unit/controller/templates/functional_test.rb
@@ -1,11 +1,9 @@
 require 'test_helper'
 
 <% module_namespacing do -%>
-class <%= class_name %>ControllerTest < ActionController::TestCase
+class <%= class_name %>ControllerTest < ActionDispatch::IntegrationTest
 <% if mountable_engine? -%>
-  setup do
-    @routes = Engine.routes
-  end
+  include Engine.routes.url_helpers
 
 <% end -%>
 <% if actions.empty? -%>
@@ -15,7 +13,7 @@ class <%= class_name %>ControllerTest < ActionController::TestCase
 <% else -%>
 <% actions.each do |action| -%>
   test "should get <%= action %>" do
-    get :<%= action %>
+    get <%= file_name %>_<%= action %>_url
     assert_response :success
   end
 
diff --git a/railties/lib/rails/generators/test_unit/scaffold/templates/api_functional_test.rb b/railties/lib/rails/generators/test_unit/scaffold/templates/api_functional_test.rb
index f302cd6c3d..de5814eae9 100644
--- a/railties/lib/rails/generators/test_unit/scaffold/templates/api_functional_test.rb
+++ b/railties/lib/rails/generators/test_unit/scaffold/templates/api_functional_test.rb
@@ -1,40 +1,41 @@
 require 'test_helper'
 
 <% module_namespacing do -%>
-class <%= controller_class_name %>ControllerTest < ActionController::TestCase
+class <%= controller_class_name %>ControllerTest < ActionDispatch::IntegrationTest
+  <% if mountable_engine? -%>
+  include Engine.routes.url_helpers
+
+  <% end -%>
   setup do
     @<%= singular_table_name %> = <%= fixture_name %>(:one)
-<% if mountable_engine? -%>
-    @routes = Engine.routes
-<% end -%>
   end
 
   test "should get index" do
-    get :index
+    get <%= index_helper %>_url
     assert_response :success
   end
 
   test "should create <%= singular_table_name %>" do
     assert_difference('<%= class_name %>.count') do
-      post :create, params: { <%= "#{singular_table_name}: { #{attributes_hash} }" %> }
+      post <%= index_helper %>_url, params: { <%= "#{singular_table_name}: { #{attributes_hash} }" %> }
     end
 
     assert_response 201
   end
 
   test "should show <%= singular_table_name %>" do
-    get :show, params: { id: <%= "@#{singular_table_name}" %> }
+    get <%= show_helper %>
     assert_response :success
   end
 
   test "should update <%= singular_table_name %>" do
-    patch :update, params: { id: <%= "@#{singular_table_name}" %>, <%= "#{singular_table_name}: { #{attributes_hash} }" %> }
+    patch <%= show_helper %>, params: { <%= "#{singular_table_name}: { #{attributes_hash} }" %> }
     assert_response 200
   end
 
   test "should destroy <%= singular_table_name %>" do
     assert_difference('<%= class_name %>.count', -1) do
-      delete :destroy, params: { id: <%= "@#{singular_table_name}" %> }
+      delete <%= show_helper %>
     end
 
     assert_response 204
diff --git a/railties/lib/rails/generators/test_unit/scaffold/templates/functional_test.rb b/railties/lib/rails/generators/test_unit/scaffold/templates/functional_test.rb
index 50b98b2631..1989d84c79 100644
--- a/railties/lib/rails/generators/test_unit/scaffold/templates/functional_test.rb
+++ b/railties/lib/rails/generators/test_unit/scaffold/templates/functional_test.rb
@@ -1,50 +1,51 @@
 require 'test_helper'
 
 <% module_namespacing do -%>
-class <%= controller_class_name %>ControllerTest < ActionController::TestCase
+class <%= controller_class_name %>ControllerTest < ActionDispatch::IntegrationTest
+  <%- if mountable_engine? -%>
+  include Engine.routes.url_helpers
+  <% end -%>
+
   setup do
     @<%= singular_table_name %> = <%= fixture_name %>(:one)
-<% if mountable_engine? -%>
-    @routes = Engine.routes
-<% end -%>
   end
 
   test "should get index" do
-    get :index
+    get <%= index_helper %>_url
     assert_response :success
   end
 
   test "should get new" do
-    get :new
+    get <%= new_helper %>
     assert_response :success
   end
 
   test "should create <%= singular_table_name %>" do
     assert_difference('<%= class_name %>.count') do
-      post :create, params: { <%= "#{singular_table_name}: { #{attributes_hash} }" %> }
+      post <%= index_helper %>_url, params: { <%= "#{singular_table_name}: { #{attributes_hash} }" %> }
     end
 
     assert_redirected_to <%= singular_table_name %>_path(<%= class_name %>.last)
   end
 
   test "should show <%= singular_table_name %>" do
-    get :show, params: { id: <%= "@#{singular_table_name}" %> }
+    get <%= show_helper %>
     assert_response :success
   end
 
   test "should get edit" do
-    get :edit, params: { id: <%= "@#{singular_table_name}" %> }
+    get <%= edit_helper %>
     assert_response :success
   end
 
   test "should update <%= singular_table_name %>" do
-    patch :update, params: { id: <%= "@#{singular_table_name}" %>, <%= "#{singular_table_name}: { #{attributes_hash} }" %> }
+    patch <%= show_helper %>, params: { <%= "#{singular_table_name}: { #{attributes_hash} }" %> }
     assert_redirected_to <%= singular_table_name %>_path(<%= "@#{singular_table_name}" %>)
   end
 
   test "should destroy <%= singular_table_name %>" do
     assert_difference('<%= class_name %>.count', -1) do
-      delete :destroy, params: { id: <%= "@#{singular_table_name}" %> }
+      delete <%= show_helper %>
     end
 
     assert_redirected_to <%= index_helper %>_path
diff --git a/railties/test/generators/namespaced_generators_test.rb b/railties/test/generators/namespaced_generators_test.rb
index 918faae74b..d76759a7d1 100644
--- a/railties/test/generators/namespaced_generators_test.rb
+++ b/railties/test/generators/namespaced_generators_test.rb
@@ -218,7 +218,7 @@ class NamespacedScaffoldGeneratorTest < NamespacedGeneratorTestCase
                 /class ProductLinesController < ApplicationController/
 
     assert_file "test/controllers/test_app/product_lines_controller_test.rb",
-                /module TestApp\n  class ProductLinesControllerTest < ActionController::TestCase/
+                /module TestApp\n  class ProductLinesControllerTest < ActionDispatch::IntegrationTest/
 
     # Views
     %w(index edit new show _form).each do |view|
@@ -285,7 +285,7 @@ class NamespacedScaffoldGeneratorTest < NamespacedGeneratorTestCase
     end
 
     assert_file "test/controllers/test_app/admin/roles_controller_test.rb",
-                /module TestApp\n  class Admin::RolesControllerTest < ActionController::TestCase/
+                /module TestApp\n  class Admin::RolesControllerTest < ActionDispatch::IntegrationTest/
 
     # Views
     %w(index edit new show _form).each do |view|
@@ -352,7 +352,7 @@ class NamespacedScaffoldGeneratorTest < NamespacedGeneratorTestCase
     end
 
     assert_file "test/controllers/test_app/admin/user/special/roles_controller_test.rb",
-                /module TestApp\n  class Admin::User::Special::RolesControllerTest < ActionController::TestCase/
+                /module TestApp\n  class Admin::User::Special::RolesControllerTest < ActionDispatch::IntegrationTest/
 
     # Views
     %w(index edit new show _form).each do |view|
@@ -418,6 +418,6 @@ class NamespacedScaffoldGeneratorTest < NamespacedGeneratorTestCase
       assert_match(%r(require_dependency "test_app/application_controller"), content)
     end
     assert_file "test/controllers/test_app/admin/roles_controller_test.rb",
-                /module TestApp\n  class Admin::RolesControllerTest < ActionController::TestCase/
+                /module TestApp\n  class Admin::RolesControllerTest < ActionDispatch::IntegrationTest/
   end
 end
diff --git a/railties/test/generators/resource_generator_test.rb b/railties/test/generators/resource_generator_test.rb
index 581d80d60e..addaf83bc8 100644
--- a/railties/test/generators/resource_generator_test.rb
+++ b/railties/test/generators/resource_generator_test.rb
@@ -33,7 +33,7 @@ class ResourceGeneratorTest < Rails::Generators::TestCase
   def test_resource_controller_with_pluralized_class_name
     run_generator
     assert_file "app/controllers/accounts_controller.rb", /class AccountsController < ApplicationController/
-    assert_file "test/controllers/accounts_controller_test.rb", /class AccountsControllerTest < ActionController::TestCase/
+    assert_file "test/controllers/accounts_controller_test.rb", /class AccountsControllerTest < ActionDispatch::IntegrationTest/
 
     assert_file "app/helpers/accounts_helper.rb", /module AccountsHelper/
   end
diff --git a/railties/test/generators/scaffold_controller_generator_test.rb b/railties/test/generators/scaffold_controller_generator_test.rb
index b4ba101017..c37e289f4b 100644
--- a/railties/test/generators/scaffold_controller_generator_test.rb
+++ b/railties/test/generators/scaffold_controller_generator_test.rb
@@ -104,10 +104,10 @@ class ScaffoldControllerGeneratorTest < Rails::Generators::TestCase
     run_generator ["User", "name:string", "age:integer", "organization:references{polymorphic}"]
 
     assert_file "test/controllers/users_controller_test.rb" do |content|
-      assert_match(/class UsersControllerTest < ActionController::TestCase/, content)
+      assert_match(/class UsersControllerTest < ActionDispatch::IntegrationTest/, content)
       assert_match(/test "should get index"/, content)
-      assert_match(/post :create, params: \{ user: \{ age: @user\.age, name: @user\.name, organization_id: @user\.organization_id, organization_type: @user\.organization_type \} \}/, content)
-      assert_match(/patch :update, params: \{ id: @user, user: \{ age: @user\.age, name: @user\.name, organization_id: @user\.organization_id, organization_type: @user\.organization_type \} \}/, content)
+      assert_match(/post users_url, params: \{ user: \{ age: @user\.age, name: @user\.name, organization_id: @user\.organization_id, organization_type: @user\.organization_type \} \}/, content)
+      assert_match(/patch user_url\(@user\), params: \{ user: \{ age: @user\.age, name: @user\.name, organization_id: @user\.organization_id, organization_type: @user\.organization_type \} \}/, content)
     end
   end
 
@@ -115,10 +115,10 @@ class ScaffoldControllerGeneratorTest < Rails::Generators::TestCase
     run_generator ["User"]
 
     assert_file "test/controllers/users_controller_test.rb" do |content|
-      assert_match(/class UsersControllerTest < ActionController::TestCase/, content)
+      assert_match(/class UsersControllerTest < ActionDispatch::IntegrationTest/, content)
       assert_match(/test "should get index"/, content)
-      assert_match(/post :create, params: \{ user: \{  \} \}/, content)
-      assert_match(/patch :update, params: \{ id: @user, user: \{  \} \}/, content)
+      assert_match(/post users_url, params: \{ user: \{  \} \}/, content)
+      assert_match(/patch user_url\(@user\), params: \{ user: \{  \} \}/, content)
     end
   end
 
@@ -236,10 +236,10 @@ class ScaffoldControllerGeneratorTest < Rails::Generators::TestCase
     run_generator ["User", "name:string", "age:integer", "organization:references{polymorphic}", "--api"]
 
     assert_file "test/controllers/users_controller_test.rb" do |content|
-      assert_match(/class UsersControllerTest < ActionController::TestCase/, content)
+      assert_match(/class UsersControllerTest < ActionDispatch::IntegrationTest/, content)
       assert_match(/test "should get index"/, content)
-      assert_match(/post :create, params: \{ user: \{ age: @user\.age, name: @user\.name, organization_id: @user\.organization_id, organization_type: @user\.organization_type \} \}/, content)
-      assert_match(/patch :update, params: \{ id: @user, user: \{ age: @user\.age, name: @user\.name, organization_id: @user\.organization_id, organization_type: @user\.organization_type \} \}/, content)
+      assert_match(/post users_url, params: \{ user: \{ age: @user\.age, name: @user\.name, organization_id: @user\.organization_id, organization_type: @user\.organization_type \} \}/, content)
+      assert_match(/patch user_url\(@user\), params: \{ user: \{ age: @user\.age, name: @user\.name, organization_id: @user\.organization_id, organization_type: @user\.organization_type \} \}/, content)
       assert_no_match(/assert_redirected_to/, content)
     end
   end
diff --git a/railties/test/generators/scaffold_generator_test.rb b/railties/test/generators/scaffold_generator_test.rb
index 0c3808a9a0..eb81ea3d0e 100644
--- a/railties/test/generators/scaffold_generator_test.rb
+++ b/railties/test/generators/scaffold_generator_test.rb
@@ -57,9 +57,9 @@ class ScaffoldGeneratorTest < Rails::Generators::TestCase
     end
 
     assert_file "test/controllers/product_lines_controller_test.rb" do |test|
-      assert_match(/class ProductLinesControllerTest < ActionController::TestCase/, test)
-      assert_match(/post :create, params: \{ product_line: \{ product_id: @product_line\.product_id, title: @product_line\.title, user_id: @product_line\.user_id \} \}/, test)
-      assert_match(/patch :update, params: \{ id: @product_line, product_line: \{ product_id: @product_line\.product_id, title: @product_line\.title, user_id: @product_line\.user_id \} \}/, test)
+      assert_match(/class ProductLinesControllerTest < ActionDispatch::IntegrationTest/, test)
+      assert_match(/post product_lines_url, params: \{ product_line: \{ product_id: @product_line\.product_id, title: @product_line\.title, user_id: @product_line\.user_id \} \}/, test)
+      assert_match(/patch product_line_url\(@product_line\), params: \{ product_line: \{ product_id: @product_line\.product_id, title: @product_line\.title, user_id: @product_line\.user_id \} \}/, test)
     end
 
     # Views
@@ -135,9 +135,9 @@ class ScaffoldGeneratorTest < Rails::Generators::TestCase
     end
 
     assert_file "test/controllers/product_lines_controller_test.rb" do |test|
-      assert_match(/class ProductLinesControllerTest < ActionController::TestCase/, test)
-      assert_match(/post :create, params: \{ product_line: \{ product_id: @product_line\.product_id, title: @product_line\.title, user_id: @product_line\.user_id \} \}/, test)
-      assert_match(/patch :update, params: \{ id: @product_line, product_line: \{ product_id: @product_line\.product_id, title: @product_line\.title, user_id: @product_line\.user_id \} \}/, test)
+      assert_match(/class ProductLinesControllerTest < ActionDispatch::IntegrationTest/, test)
+      assert_match(/post product_lines_url, params: \{ product_line: \{ product_id: @product_line\.product_id, title: @product_line\.title, user_id: @product_line\.user_id \} \}/, test)
+      assert_match(/patch product_line_url\(@product_line\), params: \{ product_line: \{ product_id: @product_line\.product_id, title: @product_line\.title, user_id: @product_line\.user_id \} \}/, test)
       assert_no_match(/assert_redirected_to/, test)
     end
 
@@ -161,10 +161,10 @@ class ScaffoldGeneratorTest < Rails::Generators::TestCase
     run_generator ["product_line"]
 
     assert_file "test/controllers/product_lines_controller_test.rb" do |content|
-      assert_match(/class ProductLinesControllerTest < ActionController::TestCase/, content)
+      assert_match(/class ProductLinesControllerTest < ActionDispatch::IntegrationTest/, content)
       assert_match(/test "should get index"/, content)
-      assert_match(/post :create, params: \{ product_line: \{  \} \}/, content)
-      assert_match(/patch :update, params: \{ id: @product_line, product_line: \{  \} \}/, content)
+      assert_match(/post product_lines_url, params: \{ product_line: \{  \} \}/, content)
+      assert_match(/patch product_line_url\(@product_line\), params: \{ product_line: \{  \} \}/, content)
     end
   end
 
@@ -250,7 +250,7 @@ class ScaffoldGeneratorTest < Rails::Generators::TestCase
     end
 
     assert_file "test/controllers/admin/roles_controller_test.rb",
-                /class Admin::RolesControllerTest < ActionController::TestCase/
+                /class Admin::RolesControllerTest < ActionDispatch::IntegrationTest/
 
     # Views
     %w(index edit new show _form).each do |view|