CheolhoJeon

@PostMapping("/register/step2")
public String handleStep2(HttpServletRequest request) {
  String agreeParam = request.getParameter("agree");
}

CheolhoJeon

@PostMapping("/register/step2")
public String handleStep2(@RequestParam(value="agree", defaultValue="false") Boolean agreeVal) {
  ...
}

CheolhoJeon

package chap07;

import java.time.LocalDateTime;

public class AutoDebitRegister {

  private CardNumberValidator validator;
  private AutoDebitInfoRepository repository;

  public AutoDebitRegister(final CardNumberValidator validator, final AutoDebitInfoRepository repository) {

CheolhoJeon

public class AutoDebitRegister {

  private CardNumberValidator validator;
  private AutoDebitInfoRepository repository;

  public AutoDebitRegister(final CardNumberValidator validator, final AutoDebitInfoRepository repository) {
    this.validator = validator;
    this.repository = repository;
  }

CheolhoJeon

public class CardNumberValidator {

  public CardValidity validate(String cardNumber) {
    HttpClient httpClient = HttpClient.newHttpClient();
    HttpRequest request = HttpRequest.newBuilder()
        .uri(URI.create("https://some-external-pg.com/card"))
        .header("Content-Type", "text/plain")
        .POST(HttpRequest.BodyPublishers.ofString(cardNumber))
        .build();
    try {

CheolhoJeon

public class AutoDebitRegisterTest {

  private AutoDebitRegister register;

  @BeforeEach
  void setUp() {
    CardNumberValidator validator = new CardNumberValidator();
    AutoDebitInfoRepository repository = new JpaAutoDebitInfoRepository();
    register = new AutoDebitRegister(validator, repository);
  }

CheolhoJeon

public class StubCardNumberValidator extends CardNumberValidator {

  private String invalidNo;

  @Override
  public CardValidity validate(final String cardNumber) {
    if (invalidNo != null && invalidNo.equals(cardNumber)) {
      return CardValidity.INVALID;
    }
    return CardValidity.VALID;

CheolhoJeon

public interface AutoDebitInfoRepository {
    void save(AutoDebitInfo info);
    AutoDebitInfo findOne(String userId);
}

CheolhoJeon

public class StubAutoDebitInfoRepository implements AutoDebitInfoRepository {

  private Map<String, AutoDebitInfo> infos = new HashMap<>();

  @Override
  public void save(final AutoDebitInfo info) {
    infos.put(info.getUserId(), info);
  }

  @Override

CheolhoJeon

public class AutoDebitRegisterStubTest {

  private AutoDebitRegister register;
  private StubCardNumberValidator stubValidator;
  private MemoryAutoDebitInfoRepository repository;

  @BeforeEach
  void setUp() {
    this.stubValidator = new StubCardNumberValidator();
    this.repository = new MemoryAutoDebitInfoRepository();