update system hooks to handle event_name fields

gitlab/gitlab.go

@@ -191,7 +191,16 @@ func eventParsing(gitLabEvent Event, events []Event, payload []byte) (interface{
 		case objectMergeRequest:
 			return eventParsing(MergeRequestEvents, events, payload)
 		default:
-			return nil, fmt.Errorf("unknown system hook event %s", gitLabEvent)
+			switch pl.EventName {
+			case objectPush:
+				return eventParsing(PushEvents, events, payload)
+			case objectTag:
+				return eventParsing(TagEvents, events, payload)
+			case objectMergeRequest:
+				return eventParsing(MergeRequestEvents, events, payload)
+			default:
+				return nil, fmt.Errorf("unknown system hook event %s", gitLabEvent)
+			}
 		}
 	default:
 		return nil, fmt.Errorf("unknown event %s", gitLabEvent)

gitlab/gitlab_test.go

@@ -286,19 +286,19 @@ func TestSystemHooks(t *testing.T) {
 			name:     "PushEvent",
 			event:    PushEvents,
 			typ:      PushEventPayload{},
-			filename: "../testdata/gitlab/push-event.json",
+			filename: "../testdata/gitlab/system-push-event.json",
 		},
 		{
 			name:     "TagEvent",
 			event:    TagEvents,
 			typ:      TagEventPayload{},
-			filename: "../testdata/gitlab/tag-event.json",
+			filename: "../testdata/gitlab/system-tag-event.json",
 		},
 		{
 			name:     "MergeRequestEvent",
 			event:    MergeRequestEvents,
 			typ:      MergeRequestEventPayload{},
-			filename: "../testdata/gitlab/merge-request-event.json",
+			filename: "../testdata/gitlab/system-merge-request-event.json",
 		},
 	}
 	for _, tt := range tests {

gitlab/payload.go

@@ -176,6 +176,7 @@ type JobEventPayload struct {
 // SystemHookPayload contains the ObjectKind to match with real hook events
 type SystemHookPayload struct {
 	ObjectKind string `json:"object_kind"`
+	EventName  string `json:"event_name"`
 }
 
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