fix:#53 added empty events check

backend/service/feed/feedFunctions_test.go

@@ -182,6 +182,13 @@ func TestCombineEventsInFeed(t *testing.T) {
 				},
 			},
 		},
+		{
+			name: "NoEventsInFeed",
+			args: args{
+				events: model.Events{},
+			},
+			want: model.Events{},
+		},
 	}
 	for _, tt := range testCases {
 		t.Run(tt.name, func(t *testing.T) {