test_render_mutate_string_literal shows inline template:1: warning: literal string will be frozen in the future

[yahonda]

Managed to reproduce inline template:1: warning: literal string will be frozen in the future warnings at https://buildkite.com/rails/rails-nightly/builds/474#018f2c4e-c61f-4acf-847e-41d4a942240b

Steps to reproduce

• Install ruby 3.4.0dev

git clone https://github.com/rails/rails
cd rails/actionview
bundle install
bin/test test/template/render_test.rb -n test_render_mutate_string_literal

Expected behavior

It should pass without warnings.

Actual behavior

It passes with inline template:1: warning: literal string will be frozen in the future warnings.

$ bin/test test/template/render_test.rb -n test_render_mutate_string_literal
... snip ...

inline template:1: warning: literal string will be frozen in the future
.inline template:1: warning: literal string will be frozen in the future
..inline template:1: warning: literal string will be frozen in the future
.

Finished in 0.506033s, 7.9046 runs/s, 25.6900 assertions/s.
4 runs, 13 assertions, 0 failures, 0 errors, 0 skips
$

System configuration

Rails version: main branch

Ruby version: ruby 3.4.0dev (2024-04-30T10:29:38Z master 8fb430c1da) [x86_64-linux]

[yahonda]

I have not bisected the Ruby commit , I assume this is related to ruby/ruby#10262

[maniSHarma7575]

@yahonda I have given a try to fix the issue. Now warning is removed.

Ruby version: ruby 3.4.0dev (2024-05-04T09:03:55Z master 96710a3139) [arm64-darwin23]

$ bin/test test/template/render_test.rb -n test_render_mutate_string_literal
Running 533 tests in parallel using 8 processes
Run options: -n test_render_mutate_string_literal --seed 32111

# Running:

....

Finished in 0.316077s, 12.6551 runs/s, 41.1292 assertions/s.
4 runs, 13 assertions, 0 failures, 0 errors, 0 skips