Implement start to close timeout on SWF decision tasks

tests/test_swf/models/test_decision_task.py

@@ -1,3 +1,4 @@
+from freezegun import freeze_time
 from sure import expect
 
 from moto.swf.models import DecisionTask
@@ -29,3 +30,20 @@ def test_decision_task_full_dict_representation():
     dt.start(1234)
     fd = dt.to_full_dict()
     fd["startedEventId"].should.equal(1234)
+
+def test_decision_task_has_timedout():
+    wfe = make_workflow_execution()
+    wft = wfe.workflow_type
+    dt = DecisionTask(wfe, 123)
+    dt.has_timedout().should.equal(False)
+
+    with freeze_time("2015-01-01 12:00:00"):
+        dt.start(1234)
+        dt.has_timedout().should.equal(False)
+
+    # activity task timeout is 300s == 5mins
+    with freeze_time("2015-01-01 12:06:00"):
+        dt.has_timedout().should.equal(True)
+
+    dt.complete()
+    dt.has_timedout().should.equal(False)

tests/test_swf/responses/test_timeouts.py

@@ -32,3 +32,34 @@ def test_activity_task_heartbeat_timeout():
         attrs["timeoutType"].should.equal("HEARTBEAT")
 
         resp["events"][-1]["eventType"].should.equal("DecisionTaskScheduled")
+
+# Decision Task Start to Close timeout
+# Default value in workflow helpers: 5 mins
+@mock_swf
+def test_decision_task_start_to_close_timeout():
+    pass
+    with freeze_time("2015-01-01 12:00:00"):
+        conn = setup_workflow()
+        conn.poll_for_decision_task("test-domain", "queue")["taskToken"]
+
+    with freeze_time("2015-01-01 12:04:30"):
+        resp = conn.get_workflow_execution_history("test-domain", conn.run_id, "uid-abcd1234")
+
+        event_types = [evt["eventType"] for evt in resp["events"]]
+        event_types.should.equal(
+            ["WorkflowExecutionStarted", "DecisionTaskScheduled", "DecisionTaskStarted"]
+        )
+
+    with freeze_time("2015-01-01 12:05:30"):
+        # => Decision Task Start to Close timeout reached!!
+        resp = conn.get_workflow_execution_history("test-domain", conn.run_id, "uid-abcd1234")
+
+        event_types = [evt["eventType"] for evt in resp["events"]]
+        event_types.should.equal(
+            ["WorkflowExecutionStarted", "DecisionTaskScheduled", "DecisionTaskStarted",
+             "DecisionTaskTimedOut", "DecisionTaskScheduled"]
+        )
+        attrs = resp["events"][-2]["decisionTaskTimedOutEventAttributes"]
+        attrs.should.equal({
+            "scheduledEventId": 2, "startedEventId": 3, "timeoutType": "START_TO_CLOSE"
+        })