spec/support/debug_failure_helper.rb in ably-1.1.1 vs spec/support/debug_failure_helper.rb in ably-1.1.2

@@ -1,21 +1,25 @@
 RSpec.configure do |config|
   config.before(:example) do |example|
     next if example.metadata[:prevent_log_stubbing]
 
+    log_mutex = Mutex.new
+
     @log_output = []
     %w(fatal error warn info debug).each do |method_name|
       allow_any_instance_of(Ably::Logger).to receive(method_name.to_sym).and_wrap_original do |method, *args, &block|
         # Don't log shutdown sequence to keep log noise to a minimum
         next if RSpec.const_defined?(:EventMachine) && RSpec::EventMachine.reactor_stopping?
 
         prefix = "#{Time.now.strftime('%H:%M:%S.%L')} [\e[33m#{method_name}\e[0m] "
 
-        begin
-          args << block.call unless block.nil?
-          @log_output << "#{prefix}#{args.compact.join(' ')}"
-        rescue StandardError => e
-          @log_output << "#{prefix}Failed to log block - #{e.class}: #{e.message}\n#{e.backtrace.join("\n")}}"
+        log_mutex.synchronize do
+          begin
+            args << block.call unless block.nil?
+            @log_output << "#{prefix}#{args.compact.join(' ')}"
+          rescue StandardError => e
+            @log_output << "#{prefix}Failed to log block - #{e.class}: #{e.message}\n#{e.backtrace.join("\n")}}"
+          end
         end
 
         # Call original
         method.call(*args, &block)
       end