Merge branch 'main' of https://grond.iut-fbleau.fr/pietrois/mylibrary

.idea/.gitignore

@@ -1,3 +1,8 @@
 # Default ignored files
 /shelf/
 /workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml

.idea/misc.xml

@@ -8,5 +8,5 @@
       </list>
     </option>
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="21" project-jdk-type="JavaSDK" />
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_23" default="true" project-jdk-name="openjdk-23" project-jdk-type="JavaSDK" />
 </project>

src/main/java/fr/iut_fbleau/but3/dev62/mylibrary/subscription/SubscriptionDTO.java

@@ -0,0 +1,15 @@
+package fr.iut_fbleau.but3.dev62.mylibrary.subscription;
+
+import lombok.Builder;
+import lombok.Getter;
+import java.util.UUID;
+
+@Builder
+@Getter
+public class SubscriptionDTO {
+    private final UUID id;
+    private final UUID customerId;
+    private final Integer duration;
+    private final String paymentMethod;
+    private final String debutDate;
+}

src/main/java/fr/iut_fbleau/but3/dev62/mylibrary/subscription/SubscriptionInfo.java

@@ -0,0 +1,7 @@
+package fr.iut_fbleau.but3.dev62.mylibrary.subscription;
+
+import java.util.UUID;
+
+public record SubscriptionInfo(UUID customerId, Integer duration, String paymentMethod) {
+
+}

src/main/java/fr/iut_fbleau/but3/dev62/mylibrary/subscription/converter/SubscriptionConverter.java

@@ -0,0 +1,31 @@
+package fr.iut_fbleau.but3.dev62.mylibrary.subscription.converter;
+
+
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.SubscriptionDTO;
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.SubscriptionInfo;
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.entity.Subscription;
+
+public final class SubscriptionConverter {
+    private SubscriptionConverter() {
+
+    }
+
+    public static Subscription toDomain(SubscriptionInfo newSubscription) {
+        return Subscription.builder()
+                .customerId(newSubscription.customerId())
+                .duration(newSubscription.duration())
+                .paymentMethod(newSubscription.paymentMethod())
+                .build();
+    }
+
+    public static SubscriptionDTO toDTO(Subscription subscription) {
+        return SubscriptionDTO.builder()
+                .id(subscription.getId())
+                .customerId(subscription.getCustomerId())
+                .duration(subscription.getDuration())
+                .paymentMethod(subscription.getPaymentMethod())
+                .debutDate(subscription.getDebutDate())
+                .build();
+    }
+
+}

src/main/java/fr/iut_fbleau/but3/dev62/mylibrary/subscription/entity/Subscription.java

@@ -0,0 +1,24 @@
+package fr.iut_fbleau.but3.dev62.mylibrary.subscription.entity;
+
+import java.util.UUID;
+import lombok.Builder;
+import lombok.Getter;
+import java.time.LocalDate;
+
+@Builder
+@Getter
+public class Subscription {
+    private  UUID id;
+    private  UUID customerId;
+    private  Integer duration;
+    private  String paymentMethod;
+    private  String debutDate;
+
+    public void setRandomUUID() {
+        this.id = UUID.randomUUID();
+    }
+
+    public void setDebutDate(String debutDate) {
+        this.debutDate = LocalDate.now().toString();
+    }
+}

src/main/java/fr/iut_fbleau/but3/dev62/mylibrary/subscription/exception/NotValidSubscriptionException.java

@@ -0,0 +1,8 @@
+package fr.iut_fbleau.but3.dev62.mylibrary.subscription.exception;
+
+public class NotValidSubscriptionException extends Exception {
+
+    public NotValidSubscriptionException(String message) {
+        super(message);
+    }
+}

src/main/java/fr/iut_fbleau/but3/dev62/mylibrary/subscription/exception/SubscriptionNotFoundException.java

@@ -0,0 +1,12 @@
+package fr.iut_fbleau.but3.dev62.mylibrary.subscription.exception;
+
+import java.text.MessageFormat;
+import java.util.UUID;
+
+public class SubscriptionNotFoundException extends Exception {
+
+    public static final String THE_SUBSCRIPTION_WITH_ID_DOES_NOT_EXIST_MESSAGE = "The customer with id {0} does not exist";
+    public SubscriptionNotFoundException(UUID uuid) {
+            super(MessageFormat.format(THE_SUBSCRIPTION_WITH_ID_DOES_NOT_EXIST_MESSAGE, uuid));
+    }
+}

src/main/java/fr/iut_fbleau/but3/dev62/mylibrary/subscription/repository/SubscriptionRepository.java

@@ -0,0 +1,36 @@
+package fr.iut_fbleau.but3.dev62.mylibrary.subscription.repository;
+
+import fr.iut_fbleau.but3.dev62.mylibrary.customer.entity.Customer;
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.entity.Subscription;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Optional;
+import java.util.UUID;
+import lombok.NoArgsConstructor;
+
+public class SubscriptionRepository {
+    private final List<Subscription> subscriptions = new ArrayList<>();
+
+    public List<Subscription> findAll() {
+        return subscriptions;
+    }
+
+    public Subscription save(Subscription newSubscription) {
+        Optional<Subscription> optionalSubscriptionWithSameId = this.findByCustomerId(newSubscription.getCustomerId());
+        optionalSubscriptionWithSameId.ifPresentOrElse(subscriptions::remove, newSubscription::setRandomUUID);
+        this.subscriptions.add(newSubscription);
+        return newSubscription;
+    }
+
+    public Optional<Subscription> findByCustomerId(UUID uuid) {
+        return this.subscriptions.stream()
+                .filter(subscription -> subscription.getCustomerId().equals(uuid))
+                .findFirst();
+    }
+
+    public boolean existsById(UUID uuid) {
+        return this.subscriptions.stream()
+                .anyMatch(subscription -> subscription.getId().equals(uuid));
+    }
+
+}

src/main/java/fr/iut_fbleau/but3/dev62/mylibrary/subscription/usecase/SubscriptionUseCase.java

@@ -0,0 +1,45 @@
+package fr.iut_fbleau.but3.dev62.mylibrary.subscription.usecase;
+
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.SubscriptionDTO;
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.SubscriptionInfo;
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.converter.SubscriptionConverter;
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.entity.Subscription;
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.exception.SubscriptionNotFoundException;
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.exception.NotValidSubscriptionException;
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.repository.SubscriptionRepository;
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.validator.SubscriptionValidator;
+import java.util.Optional;
+import java.util.UUID;
+
+public class SubscriptionUseCase {
+
+    private final SubscriptionRepository subscriptionRepository;
+
+    public SubscriptionUseCase(SubscriptionRepository subscriptionRepository) {
+        this.subscriptionRepository = subscriptionRepository;
+    }
+
+    public UUID registerSubscription(SubscriptionInfo newSubscription) throws NotValidSubscriptionException {
+        SubscriptionValidator.validate(newSubscription);
+        Subscription subscriptionToRegister = SubscriptionConverter.toDomain(newSubscription);
+        Subscription subscriptionToRegistered = subscriptionRepository.save(subscriptionToRegister);
+        if (subscriptionToRegistered.getDuration() <= 0) {
+            throw new NotValidSubscriptionException("Duration must be positive");
+        }
+        return subscriptionToRegistered.getId();
+    }
+
+    public Optional<SubscriptionDTO> findSubscriptionByCustomerId(UUID customerId) {
+        Optional<Subscription> optionalSubscription = subscriptionRepository.findByCustomerId(customerId);
+        return optionalSubscription.map(SubscriptionConverter::toDTO);
+    }
+
+    private boolean getSubscriptionIfDoesNotExistThrowSubscriptionNotFoundException(UUID uuid)
+            throws SubscriptionNotFoundException {
+        if (subscriptionRepository.existsById(uuid)) {
+            throw new SubscriptionNotFoundException(uuid);
+        }
+        return subscriptionRepository.existsById(uuid);
+    }
+
+}

src/main/java/fr/iut_fbleau/but3/dev62/mylibrary/subscription/validator/SubscriptionValidator.java

@@ -0,0 +1,38 @@
+package fr.iut_fbleau.but3.dev62.mylibrary.subscription.validator;
+
+import fr.iut_fbleau.but3.dev62.mylibrary.customer.CustomerInfo;
+import fr.iut_fbleau.but3.dev62.mylibrary.customer.exception.NotValidCustomerException;
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.SubscriptionDTO;
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.SubscriptionInfo;
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.exception.NotValidSubscriptionException;
+
+public class SubscriptionValidator {
+
+    public static final String CUSTOMER_ID_CANNOT_BE_NULL = "Customer ID cannot be null";
+    public static final String DURATION_CANNOT_BE_NULL = "Duration is not valid";
+    public static final String PAYMENT_METHOD_CANNOT_BE_BLANK = "Payment Method cannot be blank";
+
+
+    private SubscriptionValidator() {
+
+    }
+
+    public static void validate(SubscriptionInfo newSubscription) throws fr.iut_fbleau.but3.dev62.mylibrary.subscription.exception.NotValidSubscriptionException {
+        validateDuration(newSubscription);
+        validatePaymentMethod(newSubscription);
+    }
+
+
+    private static void validateDuration(SubscriptionInfo newSubscription) throws fr.iut_fbleau.but3.dev62.mylibrary.subscription.exception.NotValidSubscriptionException {
+        if (newSubscription.duration() == null) {
+            throw new fr.iut_fbleau.but3.dev62.mylibrary.subscription.exception.NotValidSubscriptionException(DURATION_CANNOT_BE_NULL);
+        }
+    }
+
+    private static void validatePaymentMethod(SubscriptionInfo newSubscription) throws fr.iut_fbleau.but3.dev62.mylibrary.subscription.exception.NotValidSubscriptionException {
+        if (newSubscription.paymentMethod().isBlank()) {
+            throw new NotValidSubscriptionException(PAYMENT_METHOD_CANNOT_BE_BLANK);
+        }
+    }
+
+}

src/test/java/fr/iut_fbleau/but3/dev62/mylibrary/features/subscription/SubscriptionSteps.java

@@ -0,0 +1,129 @@
+package fr.iut_fbleau.but3.dev62.mylibrary.features.subscription;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import fr.iut_fbleau.but3.dev62.mylibrary.customer.exception.NotValidCustomerException;
+import fr.iut_fbleau.but3.dev62.mylibrary.customer.usecase.CustomerUseCase;
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.SubscriptionInfo;
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.entity.Subscription;
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.exception.NotValidSubscriptionException;
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.repository.SubscriptionRepository;
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.usecase.SubscriptionUseCase;
+import fr.iut_fbleau.but3.dev62.mylibrary.customer.entity.Customer;
+import fr.iut_fbleau.but3.dev62.mylibrary.customer.repository.CustomerRepository;
+import io.cucumber.datatable.DataTable;
+import io.cucumber.java.en.And;
+import io.cucumber.java.en.Given;
+import io.cucumber.java.en.Then;
+import io.cucumber.java.en.When;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.UUID;
+
+
+public class SubscriptionSteps {
+
+    private final SubscriptionRepository subscriptionRepository = new SubscriptionRepository();
+    private final SubscriptionUseCase subscriptionUseCase = new SubscriptionUseCase(subscriptionRepository);
+    private NotValidSubscriptionException notValidSubscriptionException;
+
+    private final CustomerRepository customerRepository = new CustomerRepository();
+    private UUID subscriptionRegistration;
+    private final Map<String, UUID> customerPhoneUUID = new HashMap<>();
+
+    @Given("the system has the following customers:")
+    public void theSystemHasTheFollowingCustomers(DataTable dataTable) {
+        int size = customerRepository.findAll().size();
+
+        if (size > 0) {
+            customerRepository.deleteAll();
+        }
+
+        List<Map<String, String>> customers = dataTable.asMaps(String.class, String.class);
+
+        for (Map<String, String> customer : customers) {
+            String numeroTelephone = customer.get("numeroTelephone");
+            Customer newCustomer = Customer.builder()
+                    .firstName(customer.get("prenom"))
+                    .lastName(customer.get("nom"))
+                    .phoneNumber(numeroTelephone)
+                    .loyaltyPoints(Integer.parseInt(customer.get("pointsFidelite")))
+                    .build();
+            Customer save = customerRepository.save(newCustomer);
+            customerPhoneUUID.put(numeroTelephone, save.getId());
+        }
+
+        assertEquals(customers.size(), customerRepository.findAll().size());
+    }
+
+    @When("I create a new subscription with CB:")
+    public void iCreateANewSubscriptionWithCB(DataTable dataTable) throws NotValidSubscriptionException {
+        List<Map<String, String>> rows = dataTable.asMaps(String.class, String.class);
+
+        // Extract the first row of data
+        Map<String, String> subscriptionData = rows.getFirst();
+
+        // Create a new SubscriptionInfo object with the correct keys
+        SubscriptionInfo newSubscription = new SubscriptionInfo(
+                UUID.fromString(subscriptionData.get("customerId")),
+                Integer.parseInt(subscriptionData.get("duration")),
+                subscriptionData.get("paymentMethod")
+        );
+
+        // Register the subscription
+        subscriptionRegistration = subscriptionUseCase.registerSubscription(newSubscription);
+    }
+
+    @Then("a new subscription is created")
+    public void aNewSubscriptionIsCreated() {
+
+    }
+
+    @When("I create a new subscription with Paypal:")
+    public void iCreateANewSubscriptionWithPaypal(DataTable dataTable) throws NotValidSubscriptionException {
+        List<Map<String, String>> rows = dataTable.asMaps(String.class, String.class);
+
+        // Extract the first row of data
+        Map<String, String> subscriptionData = rows.getFirst();
+
+        // Create a new SubscriptionInfo object with the correct keys
+        SubscriptionInfo newSubscription = new SubscriptionInfo(
+                UUID.fromString(subscriptionData.get("customerId")),
+                Integer.parseInt(subscriptionData.get("duration")),
+                subscriptionData.get("paymentMethod")
+        );
+
+        // Register the subscription
+        subscriptionRegistration = subscriptionUseCase.registerSubscription(newSubscription);
+    }
+
+    @When("I try to create a new subscription with the following information:")
+    public void iTryToCreateANewSubscriptionWithTheFollowingInformation(DataTable dataTable) throws NotValidSubscriptionException {
+        List<Map<String, String>> rows = dataTable.asMaps(String.class, String.class);
+
+        Map<String, String> subscriptionData = rows.getFirst();
+
+        SubscriptionInfo newSubscription = new SubscriptionInfo(
+                UUID.fromString(subscriptionData.get("customerId")),
+                Integer.parseInt(subscriptionData.get("duration")),
+                subscriptionData.get("paymentMethod")
+        );
+
+        notValidSubscriptionException = assertThrows(NotValidSubscriptionException.class, () -> subscriptionUseCase.registerSubscription(newSubscription));
+    }
+
+    @Then("the subsription duration creation fails")
+    public void theSubsriptionDurationCreationFails() {assertNotNull(notValidSubscriptionException);}
+
+
+    @And("I receive an error for validation subscription message containing {string}")
+    public void iReceiveAnErrorForValidationSubscriptionMessageContaining(String errorMessage) {
+        assertEquals(errorMessage, notValidSubscriptionException.getMessage());
+    }
+}

src/test/java/fr/iut_fbleau/but3/dev62/mylibrary/subscription/converter/SubscriptionConverterTest.java

@@ -0,0 +1,103 @@
+package fr.iut_fbleau.but3.dev62.mylibrary.subscription.converter;
+
+import fr.iut_fbleau.but3.dev62.mylibrary.customer.CustomerDTO;
+import fr.iut_fbleau.but3.dev62.mylibrary.customer.CustomerInfo;
+import fr.iut_fbleau.but3.dev62.mylibrary.customer.converter.CustomerConverter;
+import fr.iut_fbleau.but3.dev62.mylibrary.customer.entity.Customer;
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.SubscriptionInfo;
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.SubscriptionDTO;
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.entity.Subscription;
+import java.util.UUID;
+import java.util.concurrent.Flow;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Nested;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNull;
+
+@DisplayName("SubscriptionConverter Unit Tests")
+public class SubscriptionConverterTest {
+
+    @Nested
+    @DisplayName("toDomain() method tests")
+    public class toDomainTests {
+
+        @Test
+        @DisplayName("Should convert SubscriptionInfo to Subscription domain object")
+        void shouldConvertSubscriptionInfoToDomain() {
+            // Given
+            SubscriptionInfo subscriptionInfo = new SubscriptionInfo(UUID.fromString("123e4567-e89b-12d3-a456-426614174000"), 12, "CB");
+
+            // When
+            Subscription result = SubscriptionConverter.toDomain(subscriptionInfo);
+
+            // Then
+            assertNotNull(result);
+            assertEquals(subscriptionInfo.customerId(), result.getCustomerId());
+            assertEquals(subscriptionInfo.duration(), result.getDuration());
+            assertEquals(subscriptionInfo.paymentMethod(), result.getPaymentMethod());
+        }
+    }
+
+    @Nested
+    @DisplayName("toDTO() method tests")
+    public class toDTOTests {
+
+        @Test
+        @DisplayName("Should convert Subscriber domain object to SubscriberDTO with all fields mapped correctly")
+        void shouldConvertSubscriptionToDTO() {
+            UUID id = UUID.randomUUID();
+
+            Subscription subscription = Subscription.builder()
+                    .id(UUID.randomUUID())
+                    .customerId(id)
+                    .duration(12)
+                    .paymentMethod("CB")
+                    .debutDate("2025-06-08")
+                    .build();
+
+            SubscriptionDTO result = SubscriptionConverter.toDTO(subscription);
+
+            assertNotNull(result);
+            assertEquals(subscription.getId(), result.getId());
+            assertEquals(subscription.getCustomerId(), result.getCustomerId());
+            assertEquals(subscription.getDuration(), result.getDuration());
+            assertEquals(subscription.getPaymentMethod(), result.getPaymentMethod());
+            assertEquals(subscription.getDebutDate(), result.getDebutDate());
+        }
+
+        @Test
+        @DisplayName("Should handle null values properly when converting between objects")
+        void shouldHandleNullValuesGracefully() {
+            Subscription subscription = Subscription.builder()
+                    .id(UUID.randomUUID())
+                    .customerId(UUID.fromString("123e4567-e89b-12d3-a456-426614174000"))
+                    .duration(null)
+                    .paymentMethod("NullTest")
+                    .debutDate("2025-06-08")
+                    .build();
+
+            SubscriptionDTO result = SubscriptionConverter.toDTO(subscription);
+
+            assertNotNull(result);
+            assertNull(result.getDuration());
+            assertEquals("NullTest", result.getPaymentMethod());
+        }
+
+        @Test
+        @DisplayName("Should preserve empty string values during conversion")
+        void shouldPreserveEmptyStrings() {
+            SubscriptionInfo subscriptionInfo = new SubscriptionInfo(UUID.fromString("123e4567-e89b-12d3-a456-426614174000"), 12, "");
+
+            Subscription domainResult = SubscriptionConverter.toDomain(subscriptionInfo);
+            SubscriptionDTO dtoResult = SubscriptionConverter.toDTO(domainResult);
+
+            assertEquals("", dtoResult.getPaymentMethod());
+        }
+    }
+}
+
+

src/test/java/fr/iut_fbleau/but3/dev62/mylibrary/subscription/entity/SubscriptionTest.java

@@ -0,0 +1,49 @@
+package fr.iut_fbleau.but3.dev62.mylibrary.subscription.entity;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Nested;
+import static org.junit.jupiter.api.Assertions.*;
+
+import java.util.UUID;
+
+
+public class SubscriptionTest {
+
+    @Test
+    @DisplayName("Builder should create a valid Subscription instance")
+    void testSubscriptionBuilder() {
+        UUID id = UUID.randomUUID();
+        UUID customerId = UUID.fromString("123e4567-e89b-12d3-a456-426614174000");
+        int duration = 12;
+        String paymentMethod = "CB";
+        String debutDate = "2025-06-08";
+
+        Subscription subscription = Subscription.builder()
+                .id(id)
+                .customerId(customerId)
+                .duration(duration)
+                .paymentMethod(paymentMethod)
+                .debutDate(debutDate)
+                .build();
+
+        assertEquals(id, subscription.getId());
+        assertEquals(customerId, subscription.getCustomerId());
+        assertEquals(duration, subscription.getDuration());
+        assertEquals(paymentMethod, subscription.getPaymentMethod());
+        assertEquals(debutDate, subscription.getDebutDate());
+    }
+
+    @Test
+    @DisplayName("setRandomUUID should change the ID to a new random UUID")
+    void testSetRandomUUID() {
+        Subscription subscription = Subscription.builder().build();
+        UUID originalId = subscription.getId();
+
+        subscription.setRandomUUID();
+
+        assertNotNull(subscription.getId());
+        assertNotEquals(originalId, subscription.getId());
+    }
+
+}

src/test/java/fr/iut_fbleau/but3/dev62/mylibrary/subscription/repository/SubscriptionRepositoryTest.java

@@ -0,0 +1,155 @@
+package fr.iut_fbleau.but3.dev62.mylibrary.subscription.repository;
+
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.entity.Subscription;
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.repository.SubscriptionRepository;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Nested;
+import org.junit.jupiter.api.Test;
+
+import java.util.List;
+import java.util.Optional;
+import java.util.UUID;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class SubscriptionRepositoryTest {
+
+
+    private SubscriptionRepository repository;
+    private Subscription Subscription1;
+    private Subscription Subscription2;
+
+    @BeforeEach
+    void setUp() {
+        repository = new SubscriptionRepository();
+
+        Subscription1 = Subscription.builder()
+                .customerId(UUID.fromString("123e4567-e89b-12d3-a456-426614174000"))
+                .duration(12)
+                .paymentMethod("CB")
+                .build();
+        Subscription1.setRandomUUID();
+
+        Subscription2 = Subscription.builder()
+                .customerId(UUID.fromString("123e4567-e89b-12d3-a456-426614174000"))
+                .duration(24)
+                .paymentMethod("Paypal")
+                .build();
+        Subscription2.setRandomUUID();
+    }
+
+    @Test
+    @DisplayName("New repository should be empty")
+    void testNewRepositoryIsEmpty() {
+        List<Subscription> subscriptions = repository.findAll();
+
+        assertTrue(subscriptions.isEmpty());
+        assertEquals(0, subscriptions.size());
+    }
+
+    @Nested
+    @DisplayName("Save operations")
+    class SaveOperations {
+
+        @Test
+        @DisplayName("Save should add a new subsciption")
+        void testSaveNewSubscription() {
+            Subscription savedSubscription = repository.save(Subscription1);
+
+            assertEquals(1, repository.findAll().size());
+            assertEquals(Subscription1.getId(), savedSubscription.getId());
+            assertEquals(Subscription1.getDebutDate(), savedSubscription.getDebutDate());
+        }
+
+        @Test
+        @DisplayName("Save multiple Subscriptions should add all of them")
+        void testSaveMultipleSubscriptions() {
+            repository.save(Subscription1);
+            repository.save(Subscription2);
+
+            List<Subscription> subscriptions = repository.findAll();
+
+            assertEquals(2, subscriptions.size());
+            assertTrue(subscriptions.contains(Subscription1));
+            assertTrue(subscriptions.contains(Subscription2));
+        }
+    }
+
+    @Nested
+    @DisplayName("Find operations")
+    class FindOperations {
+
+        @BeforeEach
+        void setUpSubscriptions() {
+            repository.save(Subscription1);
+            repository.save(Subscription2);
+        }
+
+        @Test
+        @DisplayName("FindAll should return all subscriptions")
+        void testFindAll() {
+            List<Subscription> subscriptions = repository.findAll();
+
+            assertEquals(2, subscriptions.size());
+            assertTrue(subscriptions.contains(Subscription1));
+            assertTrue(subscriptions.contains(Subscription2));
+        }
+
+        @Test
+        @DisplayName("FindById should return subscriptions with matching ID")
+        void testFindById() {
+            Optional<Subscription> foundSubscription = repository.findByCustomerId(Subscription1.getId());
+
+            assertTrue(foundSubscription.isPresent());
+            assertEquals(Subscription1.getId(), foundSubscription.get().getId());
+            assertEquals(Subscription1.getCustomerId(), foundSubscription.get().getCustomerId());
+        }
+
+        @Test
+        @DisplayName("FindById should return empty Optional when ID doesn't exist")
+        void testFindByIdNotFound() {
+            UUID nonExistentId = UUID.randomUUID();
+
+            Optional<Subscription> foundSubscription = repository.findByCustomerId(nonExistentId);
+
+            assertTrue(foundSubscription.isEmpty());
+        }
+
+        @Test
+        @DisplayName("FindByCustomerId should return customer with matching customer id")
+        void testFindByCustomerId() {
+            Optional<Subscription> foundSubscription = repository.findByCustomerId(UUID.fromString("123e4567-e89b-12d3-a456-426614174000"));
+
+            assertTrue(foundSubscription.isPresent());
+            assertEquals(Subscription1.getId(), foundSubscription.get().getId());
+            assertEquals(Subscription1.getDebutDate(), foundSubscription.get().getDebutDate());
+        }
+
+        @Test
+        @DisplayName("FindByCustomerId should return empty Optional when phone number doesn't exist")
+        void testFindByPhoneNumberNotFound() {
+            Optional<Subscription> foundSubscription = repository.findByCustomerId(UUID.fromString("0000000-0000-0000-0000-000000000000"));
+
+            assertTrue(foundSubscription.isEmpty());
+        }
+
+        @Test
+        @DisplayName("ExistsById should return true when ID exists")
+        void testExistsByIdExists() {
+            boolean exists = repository.existsById(Subscription1.getId());
+
+            assertTrue(exists);
+        }
+
+        @Test
+        @DisplayName("ExistsById should return false when ID doesn't exist")
+        void testExistsByIdNotExists() {
+            UUID nonExistentId = UUID.randomUUID();
+
+            boolean exists = repository.existsById(nonExistentId);
+
+            assertFalse(exists);
+        }
+    }
+}

src/test/java/fr/iut_fbleau/but3/dev62/mylibrary/subscription/usecase/SubscribeUseCaseTest.java

@@ -0,0 +1,109 @@
+package fr.iut_fbleau.but3.dev62.mylibrary.subscription.usecase;
+
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.SubscriptionDTO;
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.SubscriptionInfo;
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.entity.Subscription;
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.exception.SubscriptionNotFoundException;
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.exception.NotValidSubscriptionException;
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.repository.SubscriptionRepository;
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.usecase.SubscriptionUseCase;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Nested;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.junit.jupiter.MockitoExtension;
+
+import java.util.Optional;
+import java.util.UUID;
+
+import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.*;
+
+@ExtendWith(MockitoExtension.class)
+public class SubscribeUseCaseTest {
+
+    @Mock
+    private SubscriptionRepository subscriptionRepository;
+
+    @InjectMocks
+    private SubscriptionUseCase subscriptionUseCase;
+
+    private UUID subscriptionId;
+    private Subscription testSubscription;
+    private SubscriptionInfo validSubscriptionInfo;
+
+    @BeforeEach
+    void setUp() {
+        subscriptionId = UUID.randomUUID();
+        testSubscription = Subscription.builder()
+                .id(subscriptionId)
+                .customerId(UUID.fromString("123e4567-e89b-12d3-a456-426614174000"))
+                .duration(12)
+                .paymentMethod("CB")
+                .build();
+
+        validSubscriptionInfo = new SubscriptionInfo(UUID.fromString("123e4567-e89b-12d3-a456-426614174000"), 12, "CB");
+    }
+
+    @Nested
+    @DisplayName("Register subscription tests")
+    class RegisterSubscriptionTests {
+
+        @Test
+        @DisplayName("Should register subscription when valid data is provided")
+        void testRegisterSubscriptionWithValidData() throws NotValidSubscriptionException {
+            when(subscriptionRepository.save(any(Subscription.class))).thenReturn(testSubscription);
+
+            UUID registeredId = subscriptionUseCase.registerSubscription(validSubscriptionInfo);
+
+            assertNotNull(registeredId);
+            assertEquals(subscriptionId, registeredId);
+            verify(subscriptionRepository, times(1)).save(any(Subscription.class));
+        }
+
+        @Test
+        @DisplayName("Should throw exception when subscription data is not valid")
+        void testRegisterSubscriptionWithInvalidData() {
+            SubscriptionInfo invalidSubscriptionInfo = new SubscriptionInfo(null, null, "");
+
+            assertThrows(NotValidSubscriptionException.class,
+                    () -> subscriptionUseCase.registerSubscription(invalidSubscriptionInfo));
+
+            verify(subscriptionRepository, never()).save(any(Subscription.class));
+        }
+    }
+
+    @Nested
+    @DisplayName("Find subscription tests")
+    class FindSubscriptionTests {
+
+        @Test
+        @DisplayName("Should return subscription when phone number exists")
+        void testFindSubscriptionByCustomerId() {
+            when(subscriptionRepository.findByCustomerId(UUID.fromString("123e4567-e89b-12d3-a456-426614174000"))).thenReturn(Optional.of(testSubscription));
+
+            Optional<SubscriptionDTO> foundSubscription = subscriptionUseCase.findSubscriptionByCustomerId(UUID.fromString("123e4567-e89b-12d3-a456-426614174000"));
+
+            assertTrue(foundSubscription.isPresent());
+            assertEquals(testSubscription.getId(), foundSubscription.get().getId());
+            assertEquals(testSubscription.getDebutDate(), foundSubscription.get().getDebutDate());
+            verify(subscriptionRepository, times(1)).findByCustomerId(UUID.fromString("123e4567-e89b-12d3-a456-426614174000"));
+        }
+
+        @Test
+        @DisplayName("Should return empty Optional when phone number doesn't exist")
+        void testFindSubscriptionByPhoneNumberNotFound() {
+            when(subscriptionRepository.findByCustomerId(UUID.fromString("0000000-0000-0000-0000-000000000000"))).thenReturn(Optional.empty());
+
+            Optional<SubscriptionDTO> foundSubscription = subscriptionUseCase.findSubscriptionByCustomerId(UUID.fromString("0000000-0000-0000-0000-000000000000"));
+
+            assertTrue(foundSubscription.isEmpty());
+            verify(subscriptionRepository, times(1)).findByCustomerId(UUID.fromString("0000000-0000-0000-0000-000000000000"));
+        }
+    }
+    
+}

src/test/java/fr/iut_fbleau/but3/dev62/mylibrary/subscription/validator/SubscriptionValidatorTest.java

@@ -0,0 +1,121 @@
+package fr.iut_fbleau.but3.dev62.mylibrary.subscription.validator;
+
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.SubscriptionInfo;
+import fr.iut_fbleau.but3.dev62.mylibrary.subscription.exception.NotValidSubscriptionException;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Nested;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.ValueSource;
+
+import java.util.UUID;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class SubscriptionValidatorTest {
+
+    @Test
+    @DisplayName("Should validate subscription with valid data")
+    void testValidateValidSubscription() {
+        SubscriptionInfo validSubscription = new SubscriptionInfo(UUID.fromString("123e4567-e89b-12d3-a456-426614174000"), 12, "CB");
+
+        assertDoesNotThrow(() -> SubscriptionValidator.validate(validSubscription));
+    }
+
+    @Nested
+    @DisplayName("customer id validation tests")
+    class CustomerIdValidationTests {
+
+        @Test
+        @DisplayName("Should throw exception when customer id is blank")
+        void testValidateBlankCustomerId() {
+            SubscriptionInfo subscriptionWithBlankCustomerId = new SubscriptionInfo(null, 12, "CB");
+
+            NotValidSubscriptionException exception = assertThrows(
+                    NotValidSubscriptionException.class,
+                    () -> SubscriptionValidator.validate(subscriptionWithBlankCustomerId)
+            );
+
+            assertEquals(SubscriptionValidator.CUSTOMER_ID_CANNOT_BE_NULL,
+                    exception.getMessage());
+        }
+
+        /**@ParameterizedTest
+        @ValueSource(strings = {" ", "  ", "\t", "\n"})
+        @DisplayName("Should throw exception when customer id contains only whitespace")
+        void testValidateWhitespaceCustomerId(String whitespace) {
+            SubscriptionInfo subscriptionWithWhitespaceFirstName = new SubscriptionInfo(whitespace, 12, "CB");
+
+            NotValidSubscriptionException exception = assertThrows(
+                    NotValidSubscriptionException.class,
+                    () -> SubscriptionValidator.validate(subscriptionWithWhitespaceCustomerId)
+            );
+
+            assertEquals(SubscriptionValidator.CUSTOMER_ID_CANNOT_BE_BLANK, exception.getMessage());
+        }**/
+    }
+
+    @Nested
+    @DisplayName("Duration validation tests")
+    class DurationValidationTests {
+
+        @Test
+        @DisplayName("Should throw exception when duration is blank")
+        void testValidateBlankDuration() {
+            SubscriptionInfo subscriptionWithBlankDuration = new SubscriptionInfo(UUID.fromString("123e4567-e89b-12d3-a456-426614174000"), null, "CB");
+
+            NotValidSubscriptionException exception = assertThrows(
+                    NotValidSubscriptionException.class,
+                    () -> SubscriptionValidator.validate(subscriptionWithBlankDuration)
+            );
+
+            assertEquals(SubscriptionValidator.DURATION_CANNOT_BE_NULL, exception.getMessage());
+        }
+
+        /**@ParameterizedTest
+        @ValueSource(strings = {" ", "  ", "\t", "\n"})
+        @DisplayName("Should throw exception when last name contains only whitespace")
+        void testValidateWhitespaceDuration(String whitespace) {
+            SubscriptionInfo subscriptionWithWhitespaceDuration = new SubscriptionInfo(UUID.fromString("123e4567-e89b-12d3-a456-426614174000"), whitespace, "CB");
+
+            NotValidSubscriptionException exception = assertThrows(
+                    NotValidSubscriptionException.class,
+                    () -> SubscriptionValidator.validate(subscriptionWithWhitespaceDuration)
+            );
+
+            assertEquals(SubscriptionValidator.DURATION_CANNOT_BE_BLANK, exception.getMessage());
+        }**/
+    }
+
+    @Nested
+    @DisplayName("Payment method validation tests")
+    class PaymentMethodValidationTests {
+
+        @Test
+        @DisplayName("Should throw exception when payment method is blank")
+        void testValidateBlankPaymentMethod() {
+            SubscriptionInfo subscriptionWithBlankPaymentMethod = new SubscriptionInfo(UUID.fromString("123e4567-e89b-12d3-a456-426614174000"), 12, "");
+
+            NotValidSubscriptionException exception = assertThrows(
+                    NotValidSubscriptionException.class,
+                    () -> SubscriptionValidator.validate(subscriptionWithBlankPaymentMethod)
+            );
+
+            assertEquals(SubscriptionValidator.PAYMENT_METHOD_CANNOT_BE_BLANK, exception.getMessage());
+        }
+
+        @ParameterizedTest
+        @ValueSource(strings = {" ", "  ", "\t", "\n"})
+        @DisplayName("Should throw exception when payment method contains only whitespace")
+        void testValidateWhitespacePhoneNumber(String whitespace) {
+            SubscriptionInfo subscriptionWithWhitespacePaymentMethod = new SubscriptionInfo(UUID.fromString("123e4567-e89b-12d3-a456-426614174000"), 12, whitespace);
+
+            NotValidSubscriptionException exception = assertThrows(
+                    NotValidSubscriptionException.class,
+                    () -> SubscriptionValidator.validate(subscriptionWithWhitespacePaymentMethod)
+            );
+
+            assertEquals(SubscriptionValidator.PAYMENT_METHOD_CANNOT_BE_BLANK, exception.getMessage());
+        }
+    }
+}

src/test/resources/features/subscription.feature

@@ -0,0 +1,28 @@
+# language: en
+
+Feature: Manage customer subscription
+  Background:
+    Given the system has the following customers:
+      | customerId                           | firstName | lastName | phoneNumer | pointsFidelite |
+      | 11111111-1111-1111-1111-111111111111 | John      | Doe      | 0612345678 | 100            |
+      | 22222222-2222-2222-2222-222222222222 | Bob       | Dupond   | 0687654321 | 50             |
+      | 33333333-3333-3333-3333-333333333333 | Alice     | Untel    | 0698765432 | 0              |
+
+  Scenario: Create a new subscription
+    When I create a new subscription with CB:
+      | customerId                           | duration | paymentMethod |
+      | 11111111-1111-1111-1111-111111111111 | 12       | CB            |
+    Then a new subscription is created
+
+  Scenario: Create a new subscription
+    When I create a new subscription with Paypal:
+      | customerId                           | duration | paymentMethod |
+      | 22222222-2222-2222-2222-222222222222 | 24       | Paypal        |
+    Then a new subscription is created
+
+  Scenario: Attempt to create a subscription with invalid duration:
+    When I try to create a new subscription with the following information:
+      | customerId                           | duration | paymentMethod |
+      | 33333333-3333-3333-3333-333333333333 | 0        | CB            |
+    Then the subsription duration creation fails
+    And I receive an error for validation subscription message containing "Duration must be positive"