From ee299e1e19eb957b55a9873a77303bc630dd4239 Mon Sep 17 00:00:00 2001
From: felix-vi <patrick.felix-vimalaratnam@etu.u-pec.fr>
Date: Tue, 28 Apr 2026 19:09:55 +0200
Subject: [PATCH] =?UTF-8?q?:white=5Fcheck=5Fmark:=20r=C3=A9ussite=20des=20?=
 =?UTF-8?q?test=20du=20fichier=20exception=20BookNotFoundException=20et=20?=
 =?UTF-8?q?bons=20appel=20dans=20les=20test=20des=20usecases?=
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---
 .../book/exception/BookNotFoundException.java | 11 +++++
 .../exception/BookNotFoundExceptionTest.java  | 48 +++++++++++++++++++
 .../book/usecase/BookUseCaseTest.java         |  1 +
 3 files changed, 60 insertions(+)
 create mode 100644 src/main/java/fr/iut_fbleau/but3/dev62/mylibrary/book/exception/BookNotFoundException.java
 create mode 100644 src/test/java/fr/iut_fbleau/but3/dev62/mylibrary/book/exception/BookNotFoundExceptionTest.java

diff --git a/src/main/java/fr/iut_fbleau/but3/dev62/mylibrary/book/exception/BookNotFoundException.java b/src/main/java/fr/iut_fbleau/but3/dev62/mylibrary/book/exception/BookNotFoundException.java
new file mode 100644
index 0000000..51136c0
--- /dev/null
+++ b/src/main/java/fr/iut_fbleau/but3/dev62/mylibrary/book/exception/BookNotFoundException.java
@@ -0,0 +1,11 @@
+package fr.iut_fbleau.but3.dev62.mylibrary.book.exception;
+
+import java.text.MessageFormat;
+
+public class BookNotFoundException extends RuntimeException {
+    public static final String THE_BOOK_WITH_ID_DOES_NOT_EXIST_MESSAGE = "The book with isbn {0} does not exist";
+
+    public BookNotFoundException(String isbn) {
+        super(MessageFormat.format(THE_BOOK_WITH_ID_DOES_NOT_EXIST_MESSAGE, isbn));
+    }
+}
diff --git a/src/test/java/fr/iut_fbleau/but3/dev62/mylibrary/book/exception/BookNotFoundExceptionTest.java b/src/test/java/fr/iut_fbleau/but3/dev62/mylibrary/book/exception/BookNotFoundExceptionTest.java
new file mode 100644
index 0000000..bbcc134
--- /dev/null
+++ b/src/test/java/fr/iut_fbleau/but3/dev62/mylibrary/book/exception/BookNotFoundExceptionTest.java
@@ -0,0 +1,48 @@
+package fr.iut_fbleau.but3.dev62.mylibrary.book.exception;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+public class BookNotFoundExceptionTest {
+
+    @Test
+    @DisplayName("Exception message should contain the isbn provided")
+    void testExceptionMessageContainsIsbn() {
+        String isbn = "1234567891012";
+
+        BookNotFoundException exception = new BookNotFoundException(isbn);
+
+        String expectedMessage = String.format("The book with isbn %s does not exist", isbn);
+        assertEquals(expectedMessage, exception.getMessage());
+    }
+
+    @Test
+    @DisplayName("Exception should use the correct constant message format")
+    void testExceptionUsesConstantMessageFormat() {
+        String isbn = "1234567891012";
+
+        BookNotFoundException exception = new BookNotFoundException(isbn);
+
+        String expectedFormatWithPlaceholder = "The book with isbn {0} does not exist";
+        assertEquals(BookNotFoundException.THE_BOOK_WITH_ID_DOES_NOT_EXIST_MESSAGE,
+                expectedFormatWithPlaceholder);
+        assertTrue(exception.getMessage().contains(isbn.toString()));
+    }
+
+    @Test
+    @DisplayName("Exception should be properly thrown and caught")
+    void testExceptionCanBeThrownAndCaught() {
+        String isbn = "1234567891012";
+
+        try {
+            throw new BookNotFoundException(isbn);
+        } catch (BookNotFoundException e) {
+            String expectedMessage = String.format("The book with isbn %s does not exist", isbn);
+            assertEquals(expectedMessage, e.getMessage());
+        }
+    }
+}
diff --git a/src/test/java/fr/iut_fbleau/but3/dev62/mylibrary/book/usecase/BookUseCaseTest.java b/src/test/java/fr/iut_fbleau/but3/dev62/mylibrary/book/usecase/BookUseCaseTest.java
index 64f1eec..eda3b8c 100644
--- a/src/test/java/fr/iut_fbleau/but3/dev62/mylibrary/book/usecase/BookUseCaseTest.java
+++ b/src/test/java/fr/iut_fbleau/but3/dev62/mylibrary/book/usecase/BookUseCaseTest.java
@@ -6,6 +6,7 @@ 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.BookNotFoundException;
+import fr.iut_fbleau.but3.dev62.mylibrary.book.exception.BookNotFoundExceptionTest;
 import fr.iut_fbleau.but3.dev62.mylibrary.book.exception.IllegalBookStockException;
 import fr.iut_fbleau.but3.dev62.mylibrary.book.exception.NotValidBookException;
 import fr.iut_fbleau.but3.dev62.mylibrary.book.repository.BookRepository;