@Test
public void testJsonDeserialize_OneMember() throws Exception {

    TeamStates teamStates = Serialization.getJsonMapper().readValue("{\"0\":{\"tagFragmentCount\":0}}", TeamStates.class);
    assertThat(teamStates.getTeamNbToState(), hasKey(0));
    // TODO: This test doesn't work because of NaN
    // assertThat(teamStates.getStateForTeam(0), sameBeanAs(Optional.of(new TeamState())));
}