// suppose there are N1 match conditions in root, N2 match conditions in delegate
	// if match condition of N2 is a subset of anyone in N1, this is a valid matching conditions
	merged, conflict := mergeHTTPMatchRequests(root.Match, delegate.Match)
	if conflict {
		log.Warnf("HTTPMatchRequests conflict: root route %s, delegate route %s", root.Name, delegate.Name)
		return nil
	}
	delegate.Match = merged

				},
			},
		},
	}

	for _, tc := range cases {
		t.Run(tc.name, func(t *testing.T) {
			tc.delegate = config.DeepCopy(tc.delegate).([]*networking.HTTPMatchRequest)
			got, _ := mergeHTTPMatchRequests(tc.root, tc.delegate)
			assert.Equal(t, got, tc.expected)
		})
	}
}

func TestHasConflict(t *testing.T) {
	cases := []struct {
		name     string