Add `skip-webpack-install` option

This option is useful when want to check only the files generated by
`rails new`, or if want to do something before `webpacker:install`.

1 files changed, 14 insertions, 0 deletions

diff --git a/railties/test/generators/app_generator_test.rb b/railties/test/generators/app_generator_test.rb
index cd6bdd11c0..59fc2fcf96 100644
--- a/railties/test/generators/app_generator_test.rb
+++ b/railties/test/generators/app_generator_test.rb
@@ -825,6 +825,20 @@ class AppGeneratorTest < Rails::Generators::TestCase
     assert_gem "webpacker"
   end
 
+  def test_skip_webpack_install
+    command_check = -> command do
+      if command == "webpacker:install"
+        assert false, "webpacker:install expected not to be called."
+      end
+    end
+
+    generator([destination_root], skip_webpack_install: true).stub(:rails_command, command_check) do
+      quietly { generator.invoke_all }
+    end
+
+    assert_gem "webpacker"
+  end
+
   def test_generator_if_skip_turbolinks_is_given
     run_generator [destination_root, "--skip-turbolinks", "--no-skip-javascript"]