I have this test scenario that get store parameters

it('getStoreParams', () => {
      wrapper = shallowMount(LineDiffGraph, {store, localVue});

      const vm = wrapper.vm;
      let a = wrapper.vm.getStoreParams(vm);
      expect(a).toBe(null);
      
      vm.menuId = null;
      util.errorTest(wrapper.vm.getStoreParams, [vm]);

      a = wrapper.vm.getStoreParams(null);
      expect(a).toBe(undefined);
    });

but the vm.menuId = null is giving the result "UnhandledPromiseRejection" I'm new to jest, I would be very grateful if anyone has the answer about this one