Add events.list_event_buses

moto/events/models.py

@@ -344,6 +344,16 @@ class EventsBackend(BaseBackend):
 
         return self.event_buses[name]
 
+    def list_event_buses(self, name_prefix):
+        if name_prefix:
+            return [
+                event_bus
+                for event_bus in self.event_buses.values()
+                if event_bus.name.startswith(name_prefix)
+            ]
+
+        return list(self.event_buses.values())
+
 
 available_regions = boto3.session.Session().get_available_regions("events")
 events_backends = {region: EventsBackend(region) for region in available_regions}

moto/events/responses.py

@@ -278,3 +278,21 @@ class EventsHandler(BaseResponse):
         event_bus = self.events_backend.create_event_bus(name, event_source_name)
 
         return json.dumps({"EventBusArn": event_bus.arn}), self.response_headers
+
+    def list_event_buses(self):
+        name_prefix = self._get_param("NamePrefix")
+        # ToDo: add 'NextToken' & 'Limit' parameters
+
+        response = []
+        for event_bus in self.events_backend.list_event_buses(name_prefix):
+            event_bus_response = {
+                "Name": event_bus.name,
+                "Arn": event_bus.arn,
+            }
+
+            if event_bus.policy:
+                event_bus_response["Policy"] = event_bus.policy
+
+            response.append(event_bus_response)
+
+        return json.dumps({"EventBuses": response}), self.response_headers