src/main/java/fr/iut_fbleau/but3/dev62/mylibrary/book/validator/BookValidator.java

@@ -4,7 +4,6 @@ import fr.iut_fbleau.but3.dev62.mylibrary.book.BookDetails;
 import fr.iut_fbleau.but3.dev62.mylibrary.book.BookInfo;
 import fr.iut_fbleau.but3.dev62.mylibrary.book.BookSalesInfo;
 import fr.iut_fbleau.but3.dev62.mylibrary.book.exception.NotValidBookException;
-import fr.iut_fbleau.but3.dev62.mylibrary.customer.exception.NotValidCustomerException;
 
 import java.time.LocalDate;
 import java.util.ArrayList;
@@ -24,7 +23,7 @@ public class BookValidator {
     private BookValidator() {
     }
 
-    public static void validate(BookInfo newBook) throws NotValidCustomerException {
+    public static void validate(BookInfo newBook) throws NotValidBookException {
         validateISBN(newBook);
         validateTitle(newBook);
         validateAuthor(newBook);
@@ -32,12 +31,12 @@ public class BookValidator {
         validateDate(newBook);
     }
 
-    public static void validate(BookSalesInfo newBook) throws NotValidCustomerException {
+    public static void validate(BookSalesInfo newBook) throws NotValidBookException {
         validatePrice(newBook);
         validateStock(newBook);
     }
 
-    public static void validate(BookDetails newBook) throws NotValidCustomerException {
+    public static void validate(BookDetails newBook) throws NotValidBookException {
         validateCategories(newBook);
         validateLanguage(newBook);
     }

src/test/java/fr/iut_fbleau/but3/dev62/mylibrary/book/entity/BookTest.java

@@ -15,8 +15,8 @@ import static org.junit.jupiter.api.Assertions.assertTrue;
 public class BookTest {
 
     @Test
-    @DisplayName("Builder should create a valid Customer instance")
+    @DisplayName("Builder should create a valid Book instance")
-    void testCustomerBuilder() {
+    void testBookBuilder() {
         String isbn = "1234567891012";
         String title = "La vie de Maxime";
         String author = "Marvin Aubert";

src/test/java/fr/iut_fbleau/but3/dev62/mylibrary/book/repository/BookRepositoryTest.java

@@ -199,7 +199,7 @@ public class BookRepositoryTest {
     class DeleteOperations {
 
         @BeforeEach
-        void setUpCustomers() {
+        void setUpBooks() {
             repository.save(book1);
             repository.save(book2);
         }

src/test/java/fr/iut_fbleau/but3/dev62/mylibrary/book/usecase/BookUseCaseTest.java

@@ -0,0 +1,345 @@
+package fr.iut_fbleau.but3.dev62.mylibrary.book.usecase;
+
+import fr.iut_fbleau.but3.dev62.mylibrary.book.BookDTO;
+import fr.iut_fbleau.but3.dev62.mylibrary.book.BookDetails;
+import fr.iut_fbleau.but3.dev62.mylibrary.book.BookInfo;
+import fr.iut_fbleau.but3.dev62.mylibrary.book.BookSalesInfo;
+import fr.iut_fbleau.but3.dev62.mylibrary.book.entity.Book;
+import fr.iut_fbleau.but3.dev62.mylibrary.book.exception.NotValidBookException;
+import fr.iut_fbleau.but3.dev62.mylibrary.book.repository.BookRepository;
+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.time.LocalDate;
+import java.util.ArrayList;
+import java.util.Optional;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+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 static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.*;
+import static org.mockito.Mockito.never;
+
+@ExtendWith(MockitoExtension.class)
+public class BookUseCaseTest {
+
+    @Mock
+    private BookRepository bookRepository;
+
+    @InjectMocks
+    private BookUseCase bookUseCase;
+
+    private String bookIsbn;
+    private ArrayList<String> categories;
+    private LocalDate date;
+    private Book testBook;
+    private BookInfo validBookInfo;
+    private BookDetails validBookDetails;
+    private BookSalesInfo validBookSalesInfo;
+
+    @BeforeEach
+    void setUp() {
+        bookIsbn = "1234567891012";
+        date = LocalDate.of(2026, 3, 24);
+        categories = new ArrayList<>();
+        categories.add("Thriller");
+        categories.add("Biographie");
+
+        testBook = Book.builder()
+                .isbn(bookIsbn)
+                .title("La vie de Maxime")
+                .author("Marvin AUbert")
+                .editor("Kioon")
+                .date(date)
+                .price(12.99)
+                .stock(50)
+                .categories(categories)
+                .description("C'était un brave partit trop tôt")
+                .language("Français")
+                .build();
+
+        validBookInfo = new BookInfo(bookIsbn,"La vie de Maxime", "Marvin AUbert", "Kioon", date);
+        validBookSalesInfo = BookSalesInfo.builder()
+                .price(12.99)
+                .stock(50)
+                .build();
+        validBookDetails = BookDetails.builder()
+                .categories(categories)
+                .description("C'était un brave partit trop tôt")
+                .language("Français")
+                .build();
+    }
+
+    @Nested
+    @DisplayName("Register Book tests")
+    class RegisterBookTests {
+
+        @Test
+        @DisplayName("Should register book when valid data is provided")
+        void testRegisterBookWithValidData() throws NotValidBookException {
+            when(bookRepository.save(any(Book.class))).thenReturn(testBook);
+
+            String registeredIsbn = bookUseCase.registerBook(validBookInfo);
+
+            assertNotNull(registeredIsbn);
+            assertEquals(bookIsbn, registeredIsbn);
+            verify(bookRepository, times(1)).save(any(Book.class));
+        }
+
+        @Test
+        @DisplayName("Should throw exception when book data is not valid")
+        void testRegisterBookWithInvalidData() {
+            BookInfo invalidBookInfo = new BookInfo(bookIsbn,"", "", "", date);
+
+            assertThrows(NotValidBookException.class,
+                    () -> bookUseCase.registerBook(invalidBookInfo));
+
+            verify(bookRepository, never()).save(any(Book.class));
+        }
+    }
+
+    @Nested
+    @DisplayName("Find book tests")
+    class FindBookTests {
+
+        @Test
+        @DisplayName("Should return book when isbn exists")
+        void testFindBookByIsbn() {
+            when(bookRepository.findByIsbn("1234567891012")).thenReturn(Optional.of(testBook));
+
+            Optional<BookDTO> foundBook = bookUseCase.findBookByIsbn("1234567891012");
+
+            assertTrue(foundBook.isPresent());
+            assertEquals(testBook.getIsbn(), foundBook.get().getIsbn());
+            assertEquals(testBook.getTitle(), foundBook.get().getTitle());
+            verify(bookRepository, times(1)).findByIsbn("1234567891012");
+        }
+
+        @Test
+        @DisplayName("Should return empty Optional when isbn doesn't exist")
+        void testFindBookByIsbn() {
+            when(bookRepository.findByIsbn("1656546262516")).thenReturn(Optional.empty());
+
+            Optional<BookDTO> foundBook = bookUseCase.findBookByIsbn("1656546262516");
+
+            assertTrue(foundBook.isEmpty());
+            verify(bookRepository, times(1)).findByIsbn("1656546262516");
+        }
+    }
+
+    @Nested
+    @DisplayName("Update book tests")
+    class UpdateBookTests {
+
+        @Test
+        @DisplayName("Should update book when valid data is provided")
+        void testUpdateBookWithValidData() throws BookNotFoundException, NotValidBookException {
+            when(bookRepository.findByIsbn(bookIsbn)).thenReturn(Optional.of(testBook));
+
+            Book updatedBook = Book.builder()
+                    .isbn(bookIsbn)
+                    .title("La vie de Maxime")
+                    .author("Updated")
+                    .editor("Kioon")
+                    .date(date)
+                    .price(12.99)
+                    .stock(50)
+                    .categories(categories)
+                    .description("C'était un brave partit trop tôt")
+                    .language("Français")
+                    .build();
+
+            when(bookRepository.save(any(Book.class))).thenReturn(updatedBook);
+
+            BookInfo updateInfo = new BookInfo(bookIsbn, "La vie de Maxime", "Updated", "Kioon", date);
+            BookSalesInfo updateSalesInfo = BookSalesInfo.builder()
+                    .price(12.99)
+                    .stock(50)
+                    .build();
+            BookDetails updateDetails = BookDetails.builder()
+                    .categories(categories)
+                    .description("C'était un brave partit trop tôt")
+                    .language("Français")
+                    .build();
+            BookDTO result = BookUseCase.updateBook(updateInfo, updateSalesInfo, updateDetails);
+
+            assertNotNull(result);
+            assertEquals(bookIsbn, result.getIsbn());
+            assertEquals("La vie de Maxime", result.getTitle());
+            assertEquals("Updated", result.getAuthor());
+            assertEquals("Kioon", result.getEditor());
+            assertEquals(date, result.getDate());
+            assertEquals(12.99, result.getPrice());
+            assertEquals(50, result.getStock());
+            assertEquals(categories, result.getCategories());
+            assertEquals("C'était un brave partit trop tôt", result.getDescription());
+            assertEquals("Français", result.getLanguage());
+            verify(bookRepository, times(1)).findByIsbn(bookIsbn);
+            verify(bookRepository, times(1)).save(any(Book.class));
+        }
+
+        @Test
+        @DisplayName("Should throw exception when book isbn doesn't exist")
+        void testUpdateBookNotFound() {
+            String nonExistentIsbn = "1656546262516";
+            when(bookRepository.findByIsbn(nonExistentIsbn)).thenReturn(Optional.empty());
+
+            BookInfo updateInfo = new BookInfo(nonExistentIsbn, "La vie de Maxime", "Updated", "Kioon", date);
+            BookSalesInfo updateSalesInfo = BookSalesInfo.builder()
+                    .price(12.99)
+                    .stock(50)
+                    .build();
+            BookDetails updateDetails = BookDetails.builder()
+                    .categories(categories)
+                    .description("C'était un brave partit trop tôt")
+                    .language("Français")
+                    .build();
+
+            assertThrows(BookNotFoundException.class,
+                    () -> bookUseCase.updateBook(updateInfo, updateSalesInfo, updateDetails));
+
+            verify(bookRepository, times(1)).findByIsbn(nonExistentIsbn);
+            verify(bookRepository, never()).save(any(Book.class));
+        }
+
+        @Test
+        @DisplayName("Should throw exception when update data is not valid")
+        void testUpdateBookWithInvalidData() {
+            BookInfo invalidUpdateInfo = new BookInfo(bookIsbn,"", "", "", date);
+            BookSalesInfo invalidUpdateSalesInfo = BookSalesInfo.builder()
+                    .price(0)
+                    .stock(-3)
+                    .build();
+            BookDetails invalidUpdateDetails = BookDetails.builder()
+                    .categories(categories)
+                    .description("")
+                    .language("")
+                    .build();
+
+            assertThrows(NotValidBookException.class,
+                    () -> bookUseCase.updateBook(invalidUpdateInfo, invalidUpdateSalesInfo, invalidUpdateDetails));
+
+            verify(bookRepository, never()).findByIsbn(any(String.class));
+            verify(bookRepository, never()).save(any(Book.class));
+        }
+    }
+
+    @Nested
+    @DisplayName("Delete book tests")
+    class DeleteBookTests {
+
+        @Test
+        @DisplayName("Should delete book when isbn exists")
+        void testDeleteBook() throws BookNotFoundException {
+            when(bookRepository.findByIsbn(bookIsbn)).thenReturn(Optional.of(testBook));
+            doNothing().when(bookRepository).delete(testBook);
+
+            bookUseCase.deleteBook(bookIsbn);
+
+            verify(bookRepository, times(1)).findByIsbn(bookIsbn);
+            verify(bookRepository, times(1)).delete(testBook);
+        }
+
+        @Test
+        @DisplayName("Should throw exception when book isbn doesn't exist")
+        void testDeleteBookNotFound() {
+            String nonExistentIsbn = "1656546262516";
+            when(bookRepository.findByIsbn(nonExistentIsbn)).thenReturn(Optional.empty());
+
+            assertThrows(BookNotFoundException.class,
+                    () -> bookUseCase.deleteBook(nonExistentIsbn));
+
+            verify(bookRepository, times(1)).findByIsbn(nonExistentIsbn);
+            verify(bookRepository, never()).delete(any(Book.class));
+        }
+    }
+
+    @Nested
+    @DisplayName("Stock copies tests")
+    class StockCopiesTests {
+
+        @Test
+        @DisplayName("Should add stock copies to book")
+        void testAddStockCopies() throws BookNotFoundException {
+            when(bookRepository.findByIsbn(bookIsbn)).thenReturn(Optional.of(testBook));
+            when(bookRepository.save(testBook)).thenReturn(testBook);
+
+            int initialCopies = testBook.getStock();
+            int copiesToAdd = 50;
+            int expectedCopies = initialCopies + copiesToAdd;
+
+            int newCopies = bookUseCase.addStockCopies(bookIsbn, copiesToAdd);
+
+            assertEquals(expectedCopies, newCopies);
+            assertEquals(expectedCopies, testBook.getStock());
+            verify(bookRepository, times(1)).findByIsbn(bookIsbn);
+            verify(bookRepository, times(1)).save(testBook);
+        }
+
+        @Test
+        @DisplayName("Should throw exception when adding copies to non-existent book")
+        void testAddStockCopiesToNonExistentBook() {
+            String nonExistentIsbn = "1656546262516";
+            when(bookRepository.findByIsbn(nonExistentIsbn)).thenReturn(Optional.empty());
+
+            assertThrows(BookNotFoundException.class,
+                    () -> bookUseCase.addStockCopies(nonExistentIsbn, 50));
+
+            verify(bookRepository, times(1)).findByIsbn(nonExistentIsbn);
+            verify(bookRepository, never()).save(any(Book.class));
+        }
+
+        @Test
+        @DisplayName("Should subtract stock copies from book")
+        void testSubtractStockCopies() throws BookNotFoundException, IllegalBookCpoiesException {
+            when(bookRepository.findByIsbn(bookIsbn)).thenReturn(Optional.of(testBook));
+            when(bookRepository.save(testBook)).thenReturn(testBook);
+
+            int initialCopies = testBook.getStock();
+            int copiesToRemove = 30;
+            int expectedCopies = initialCopies - copiesToRemove;
+
+            int newCopies = bookUseCase.subtractStockCopies(bookIsbn, copiesToRemove);
+
+            assertEquals(expectedCopies, newCopies);
+            assertEquals(expectedCopies, testBook.getStock());
+            verify(bookRepository, times(1)).findByIsbn(bookIsbn);
+            verify(bookRepository, times(1)).save(testBook);
+        }
+
+        @Test
+        @DisplayName("Should throw exception when trying to remove more copies than available")
+        void testSubtractTooManyStockCopies() {
+            when(bookRepository.findByIsbn(bookIsbn)).thenReturn(Optional.of(testBook));
+
+            int copiesToRemove = 200;
+
+            assertThrows(IllegalBookCpoiesException.class,
+                    () -> bookUseCase.subtractStockCopies(bookIsbn, copiesToRemove));
+
+            verify(bookRepository, times(1)).findByIsbn(bookIsbn);
+            verify(bookRepository, never()).save(any(Book.class));
+        }
+
+        @Test
+        @DisplayName("Should throw exception when subtracting copies from non-existent book")
+        void testSubtractStockCopiesFromNonExistentBook() {
+            String nonExistentIsbn = "1656546262516";
+            when(bookRepository.findByIsbn(nonExistentIsbn)).thenReturn(Optional.empty());
+
+            assertThrows(BookNotFoundException.class,
+                    () -> bookUseCase.subtractStockCopies(nonExistentIsbn, 50));
+
+            verify(bookRepository, times(1)).findByIsbn(nonExistentIsbn);
+            verify(bookRepository, never()).save(any(Book.class));
+        }
+    }
+}