`rails new` runs `rails active_storage:install`

Omit `rails activestorage:install` for jdbcmysql, jdbc and shebang tests

AppGeneratorTest#test_config_jdbcmysql_database

  rails aborted!
  LoadError: Could not load 'active_record/connection_adapters/mysql_adapter'.
  Make sure that the adapter in config/database.yml is valid.
  If you use an adapter other than 'mysql2', 'postgresql' or 'sqlite3' add
  the necessary adapter gem to the Gemfile.
  (compressed)
  bin/rails:4:in `<main>'
  Tasks: TOP => activestorage:install => environment
  (See full trace by running task with --trace)

AppGeneratorTest#test_config_jdbc_database

  rails aborted!
  LoadError: Could not load 'active_record/connection_adapters/jdbc_adapter'.
  Make sure that the adapter in config/database.yml is valid.
  If you use an adapter other than 'mysql2', 'postgresql' or 'sqlite3' add
  the necessary adapter gem to the Gemfile.
  (compressed)
  bin/rails:4:in `<main>'
  Tasks: TOP => activestorage:install => environment
  (See full trace by running task with --trace)

AppGeneratorTest#test_shebang_is_added_to_rails_file

  /home/ubuntu/.rbenv/versions/2.4.1/bin/ruby: no Ruby script found in input (LoadError)

Prevent PendingMigrationError in tests

 * Run `bin/rails db:migrate RAILS_ENV=test` in test_cases before start tests to prevent PendingMigrationError
 * FileUtils.rm_r("db/migrate")
 * --skip-active-storage

Fix failed tests in `railties/test/railties/engine_test.rb`

Related to #30111

Imporve `SharedGeneratorTests#test_default_frameworks_are_required_when_others_are_removed`

 - Explicitly skip active_storage
 - Ensure that skipped frameworks are commented
 - Ensure that default frameworks are not commented

Fix error `Errno::ENOSPC: No space left on device - sendfile`

Since `rails new` runs `rails active_storage:install`
that boots an app.

Since adding Bootsnap 0312a5c67e35b960e33677b5358c539f1047e4e1
during booting an app, it creates the cache:

   264K    tmp/cache/bootsnap-load-path-cache
   27M     tmp/cache/bootsnap-compile-cache

* teardown_app must remove app

4 files changed, 32 insertions, 14 deletions

diff --git a/railties/test/generators/app_generator_test.rb b/railties/test/generators/app_generator_test.rb
index 0e2988952b..c5a59edab2 100644
--- a/railties/test/generators/app_generator_test.rb
+++ b/railties/test/generators/app_generator_test.rb
@@ -68,6 +68,7 @@ DEFAULT_APP_FILES = %w(
   config/spring.rb
   config/storage.yml
   db
+  db/migrate
   db/seeds.rb
   lib
   lib/tasks
@@ -408,7 +409,7 @@ class AppGeneratorTest < Rails::Generators::TestCase
   end
 
   def test_config_jdbcmysql_database
-    run_generator([destination_root, "-d", "jdbcmysql"])
+    run_generator([destination_root, "-d", "jdbcmysql", "--skip-active-storage"])
     assert_file "config/database.yml", /mysql/
     assert_gem "activerecord-jdbcmysql-adapter"
   end
@@ -426,7 +427,7 @@ class AppGeneratorTest < Rails::Generators::TestCase
   end
 
   def test_config_jdbc_database
-    run_generator([destination_root, "-d", "jdbc"])
+    run_generator([destination_root, "-d", "jdbc", "--skip-active-storage"])
     assert_file "config/database.yml", /jdbc/
     assert_file "config/database.yml", /mssql/
     assert_gem "activerecord-jdbc-adapter"
@@ -803,7 +804,7 @@ class AppGeneratorTest < Rails::Generators::TestCase
       template
     end
 
-    sequence = ["git init", "install", "exec spring binstub --all", "echo ran after_bundle"]
+    sequence = ["git init", "install", "exec spring binstub --all", "active_storage:install", "echo ran after_bundle"]
     @sequence_step ||= 0
     ensure_bundler_first = -> command, options = nil do
       assert_equal sequence[@sequence_step], command, "commands should be called in sequence #{sequence}"
@@ -813,12 +814,14 @@ class AppGeneratorTest < Rails::Generators::TestCase
     generator([destination_root], template: path).stub(:open, check_open, template) do
       generator.stub(:bundle_command, ensure_bundler_first) do
         generator.stub(:run, ensure_bundler_first) do
-          quietly { generator.invoke_all }
+          generator.stub(:rails_command, ensure_bundler_first) do
+            quietly { generator.invoke_all }
+          end
         end
       end
     end
 
-    assert_equal 4, @sequence_step
+    assert_equal 5, @sequence_step
   end
 
   def test_system_tests_directory_generated
diff --git a/railties/test/generators/scaffold_controller_generator_test.rb b/railties/test/generators/scaffold_controller_generator_test.rb
index 513b037043..fd5aa817b4 100644
--- a/railties/test/generators/scaffold_controller_generator_test.rb
+++ b/railties/test/generators/scaffold_controller_generator_test.rb
@@ -207,6 +207,7 @@ class ScaffoldControllerGeneratorTest < Rails::Generators::TestCase
 
     Dir.chdir(engine_path) do
       quietly { `bin/rails g controller dashboard foo` }
+      quietly { `bin/rails db:migrate RAILS_ENV=test` }
       assert_match(/2 runs, 2 assertions, 0 failures, 0 errors/, `bin/rails test 2>&1`)
     end
   end
@@ -218,6 +219,7 @@ class ScaffoldControllerGeneratorTest < Rails::Generators::TestCase
 
     Dir.chdir(engine_path) do
       quietly { `bin/rails g controller dashboard foo` }
+      quietly { `bin/rails db:migrate RAILS_ENV=test` }
       assert_match(/2 runs, 2 assertions, 0 failures, 0 errors/, `bin/rails test 2>&1`)
     end
   end
diff --git a/railties/test/generators/shared_generator_tests.rb b/railties/test/generators/shared_generator_tests.rb
index cd86dd662f..ed09847443 100644
--- a/railties/test/generators/shared_generator_tests.rb
+++ b/railties/test/generators/shared_generator_tests.rb
@@ -63,7 +63,7 @@ module SharedGeneratorTests
   end
 
   def test_shebang_is_added_to_rails_file
-    run_generator [destination_root, "--ruby", "foo/bar/baz", "--full"]
+    run_generator [destination_root, "--ruby", "foo/bar/baz", "--full", "--skip-active-storage"]
     assert_file "bin/rails", /#!foo\/bar\/baz/
   end
 
@@ -129,13 +129,26 @@ module SharedGeneratorTests
   end
 
   def test_default_frameworks_are_required_when_others_are_removed
-    run_generator [destination_root, "--skip-active-record", "--skip-action-mailer", "--skip-action-cable", "--skip-sprockets"]
-    assert_file "#{application_path}/config/application.rb", /require\s+["']rails["']/
-    assert_file "#{application_path}/config/application.rb", /require\s+["']active_model\/railtie["']/
-    assert_file "#{application_path}/config/application.rb", /require\s+["']active_job\/railtie["']/
-    assert_file "#{application_path}/config/application.rb", /require\s+["']action_controller\/railtie["']/
-    assert_file "#{application_path}/config/application.rb", /require\s+["']action_view\/railtie["']/
-    assert_file "#{application_path}/config/application.rb", /require\s+["']active_storage\/engine["']/
+    run_generator [
+      destination_root,
+      "--skip-active-record",
+      "--skip-active-storage",
+      "--skip-action-mailer",
+      "--skip-action-cable",
+      "--skip-sprockets"
+    ]
+
+    assert_file "#{application_path}/config/application.rb", /^require\s+["']rails["']/
+    assert_file "#{application_path}/config/application.rb", /^require\s+["']active_model\/railtie["']/
+    assert_file "#{application_path}/config/application.rb", /^require\s+["']active_job\/railtie["']/
+    assert_file "#{application_path}/config/application.rb", /^# require\s+["']active_record\/railtie["']/
+    assert_file "#{application_path}/config/application.rb", /^# require\s+["']active_storage\/engine["']/
+    assert_file "#{application_path}/config/application.rb", /^require\s+["']action_controller\/railtie["']/
+    assert_file "#{application_path}/config/application.rb", /^# require\s+["']action_mailer\/railtie["']/
+    assert_file "#{application_path}/config/application.rb", /^require\s+["']action_view\/railtie["']/
+    assert_file "#{application_path}/config/application.rb", /^# require\s+["']action_cable\/engine["']/
+    assert_file "#{application_path}/config/application.rb", /^# require\s+["']sprockets\/railtie["']/
+    assert_file "#{application_path}/config/application.rb", /^require\s+["']rails\/test_unit\/railtie["']/
   end
 
   def test_generator_without_skips
diff --git a/railties/test/generators/test_runner_in_engine_test.rb b/railties/test/generators/test_runner_in_engine_test.rb
index 0e15b5e388..2acd96ecd4 100644
--- a/railties/test/generators/test_runner_in_engine_test.rb
+++ b/railties/test/generators/test_runner_in_engine_test.rb
@@ -7,7 +7,7 @@ class TestRunnerInEngineTest < ActiveSupport::TestCase
 
   def setup
     @destination_root = Dir.mktmpdir("bukkits")
-    Dir.chdir(@destination_root) { `bundle exec rails plugin new bukkits --full --skip-bundle` }
+    Dir.chdir(@destination_root) { `bundle exec rails plugin new bukkits --full --skip-bundle --skip-active-storage` }
     plugin_file "test/dummy/db/schema.rb", ""
   end