Fix auto_time_skipping_disabled (#260)

Author: igillis-clara

temporalio/lib/temporalio/testing/workflow_environment.rb

@@ -322,7 +322,7 @@ def auto_time_skipping_disabled(&)
           raise 'Block required' unless block_given?
           return super unless supports_time_skipping?
 
-          already_disabled = @auto_time_skipping
+          already_disabled = !@auto_time_skipping
           @auto_time_skipping = false
           begin
             yield

temporalio/test/testing/workflow_environment_test.rb

@@ -55,6 +55,34 @@ def test_time_skipping_auto
       end
     end
 
+    def test_auto_time_skipping_disabled
+      skip_if_not_x86!
+      Temporalio::Testing::WorkflowEnvironment.start_time_skipping(logger: Logger.new($stdout)) do |env|
+        worker = Temporalio::Worker.new(
+          client: env.client,
+          task_queue: "tq-#{SecureRandom.uuid}",
+          workflows: [SlowWorkflow]
+        )
+        worker.run do
+          # Check that timestamp is around now
+          assert_in_delta(Time.now, env.current_time, 30.0)
+
+          # Run workflow
+          handle = env.client.start_workflow(
+            SlowWorkflow,
+            id: "wf-#{SecureRandom.uuid}",
+            task_queue: worker.task_queue
+          )
+          env.auto_time_skipping_disabled do
+            handle.signal(SlowWorkflow.some_signal)
+          end
+          # Check that timestamp is now about two days from now
+          assert_equal 'all done', handle.result
+          assert_in_delta Time.now + SlowWorkflow::TWO_DAYS, env.current_time, 30.0
+        end
+      end
+    end
+
     def test_time_skipping_manual
       skip_if_not_x86!
       Temporalio::Testing::WorkflowEnvironment.start_time_skipping(logger: Logger.new($stdout)) do |env|