diff options
| -rw-r--r-- | activesupport/lib/active_support/testing/isolation.rb | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/activesupport/lib/active_support/testing/isolation.rb b/activesupport/lib/active_support/testing/isolation.rb index f7a92ce03b..e4f8959e7a 100644 --- a/activesupport/lib/active_support/testing/isolation.rb +++ b/activesupport/lib/active_support/testing/isolation.rb @@ -88,10 +88,14 @@ module ActiveSupport !ENV["NO_FORK"] && ((RbConfig::CONFIG['host_os'] !~ /mswin|mingw/) && (RUBY_PLATFORM !~ /java/)) end + @@class_setup_mutex = Mutex.new + def _run_class_setup # class setup method should only happen in parent - unless defined?(@@ran_class_setup) || ENV['ISOLATION_TEST'] - self.class.setup if self.class.respond_to?(:setup) - @@ran_class_setup = true + @@class_setup_mutex.synchronize do + unless defined?(@@ran_class_setup) || ENV['ISOLATION_TEST'] + self.class.setup if self.class.respond_to?(:setup) + @@ran_class_setup = true + end end end |