future proved the group update failture

ref #17

src/tests/runners/runner_add+update.spec.ts

@@ -136,7 +136,7 @@ describe('Update runner group with invalid group after adding', () => {
         expect(res2.headers['content-type']).toContain("application/json")
     });
     it('invalid update should return 404', async () => {
-        added_org.id++;
+        added_org.id = 0;
         added_runner.group = added_org;
         const res3 = await axios.put(base + '/api/runners/' + added_runner.id, added_runner, { validateStatus: undefined });
         expect(res3.status).toEqual(404);