From 8536ebeefad411ffd1b476c6b499aaec84efea80 Mon Sep 17 00:00:00 2001 From: "yuuji.yaginuma" Date: Sun, 27 Aug 2017 21:31:48 +0900 Subject: Fix `can't modify frozen String` error in `DebugLocks` Without this, `DebugLocks` middleware raises an error as follwing: ``` Puma caught this error: can't modify frozen String (RuntimeError) actionpack/lib/action_dispatch/middleware/debug_locks.rb:97:in `block in render_details' actionpack/lib/action_dispatch/middleware/debug_locks.rb:64:in `each' actionpack/lib/action_dispatch/middleware/debug_locks.rb:64:in `map' actionpack/lib/action_dispatch/middleware/debug_locks.rb:64:in `render_details' actionpack/lib/action_dispatch/middleware/debug_locks.rb:37:in `call' railties/lib/rails/engine.rb:524:in `call' ``` --- actionpack/test/dispatch/debug_locks_test.rb | 38 ++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 actionpack/test/dispatch/debug_locks_test.rb (limited to 'actionpack/test') diff --git a/actionpack/test/dispatch/debug_locks_test.rb b/actionpack/test/dispatch/debug_locks_test.rb new file mode 100644 index 0000000000..d69614bd79 --- /dev/null +++ b/actionpack/test/dispatch/debug_locks_test.rb @@ -0,0 +1,38 @@ +# frozen_string_literal: true + +require "abstract_unit" + +class DebugLocksTest < ActionDispatch::IntegrationTest + setup do + build_app + end + + def test_render_threads_status + thread_ready = Concurrent::CountDownLatch.new + test_terminated = Concurrent::CountDownLatch.new + + thread = Thread.new do + ActiveSupport::Dependencies.interlock.running do + thread_ready.count_down + test_terminated.wait + end + end + + thread_ready.wait + + get "/rails/locks" + + test_terminated.count_down + + assert_match(/Thread.*?Sharing/, @response.body) + ensure + thread.join + end + + private + def build_app + @app = self.class.build_app do |middleware| + middleware.use ActionDispatch::DebugLocks + end + end +end -- cgit v1.2.3