我正在测试一个带有void返回类型和一个参数的方法。我试图至少获得一些代码覆盖率。下面是我正在测试的一个方法：

@Service
public class VaultService {

    private final ProductRepository repository;

    private final DatabaseService databaseService;

    public VaultService(
            @Autowired BuildProperties buildProperties,
            ProductRepository repository,
            DatabaseService databaseService
    ) {
        logger.info("Creating service");

        this.repository = repository;
        this.databaseService = databaseService;
    }

    protected void checkVaultResponseErrors(VaultResponse vaultResponse) {
        if (vaultResponse.responseStatus != ResponseStatus.SUCCESS) {
            vaultResponse.errors.forEach(error -> {
                if (vaultResponse.responseStatus.equals(ResponseStatus.EXCEPTION)) {
                    throw new VaultException(error.getMessage());
                }
                if (vaultResponse.responseStatus.equals(ResponseStatus.FAILURE)) {
                    throw new VaultFailure(error.getMessage());
                }
            });
        }
    }

VaultResponse类如下所示

@Getter
@Setter
@JsonInclude(JsonInclude.Include.NON_NULL)
public class VaultResponse {
    @JsonProperty("responseStatus")
    public ResponseStatus responseStatus;

    @JsonProperty("errors")
    public List<Error> errors;
}

这是我的测试，我得到了一个Mockito.verify的错误，但是其余的代码也没有得到任何覆盖，很明显我做错了什么。

@Test
void should_check_vaultResponse_for_errors() {
    VaultService spyService = Mockito.spy(vaultService);
    VaultResponse vaultResponse = new VaultResponse();
    ResponseStatus status = ResponseStatus.SUCCESS;
    List<Error> error = new ArrayList<>();

    vaultResponse.setResponseStatus(status);
    vaultResponse.setErrors(error);

    doThrow(IllegalArgumentException.class)
            .when(spyService).checkVaultResponseErrors(vaultResponse);
    doNothing().when(spyService).checkVaultResponseErrors(vaultResponse);

    verify(spyService, times(1)).checkVaultResponseErrors(vaultResponse);
}