diff --git a/src/test/java/fr/iut_fbleau/but3/dev62/mylibrary/avis/entity/Avis.java b/src/test/java/fr/iut_fbleau/but3/dev62/mylibrary/avis/entity/Avis.java
new file mode 100644
index 0000000..57bbaf8
--- /dev/null
+++ b/src/test/java/fr/iut_fbleau/but3/dev62/mylibrary/avis/entity/Avis.java
@@ -0,0 +1,21 @@
+package fr.iut_fbleau.but3.dev62.mylibrary.avis.entity;
+
+import java.time.LocalDate;
+import java.util.UUID;
+import lombok.Builder;
+import lombok.Getter;
+
+@Builder
+@Getter
+public class Avis {
+  private UUID id;
+  private UUID clientId;
+  private UUID livreId;
+  private int note;
+  private String commentaire;
+  private LocalDate dateAchat;
+
+  public void setRandomUUID() {
+    this.id = UUID.randomUUID();
+  }
+}
\ No newline at end of file
diff --git a/src/test/java/fr/iut_fbleau/but3/dev62/mylibrary/avis/exception/AvisNotFoundException.java b/src/test/java/fr/iut_fbleau/but3/dev62/mylibrary/avis/exception/AvisNotFoundException.java
new file mode 100644
index 0000000..e8e6b00
--- /dev/null
+++ b/src/test/java/fr/iut_fbleau/but3/dev62/mylibrary/avis/exception/AvisNotFoundException.java
@@ -0,0 +1,13 @@
+package fr.iut_fbleau.but3.dev62.mylibrary.avis.exception;
+
+import java.text.MessageFormat;
+import java.util.UUID;
+
+public class AvisNotFoundException extends Exception {
+
+  public static final String THE_AVIS_WITH_ID_DOES_NOT_EXIST_MESSAGE = "The avis with id {0} does not exist";
+
+  public AvisNotFoundException(UUID uuid) {
+    super(MessageFormat.format(THE_AVIS_WITH_ID_DOES_NOT_EXIST_MESSAGE, uuid));
+  }
+}
\ No newline at end of file
diff --git a/src/test/java/fr/iut_fbleau/but3/dev62/mylibrary/avis/exception/NotValidAvisException.java b/src/test/java/fr/iut_fbleau/but3/dev62/mylibrary/avis/exception/NotValidAvisException.java
new file mode 100644
index 0000000..8bde194
--- /dev/null
+++ b/src/test/java/fr/iut_fbleau/but3/dev62/mylibrary/avis/exception/NotValidAvisException.java
@@ -0,0 +1,8 @@
+package fr.iut_fbleau.but3.dev62.mylibrary.avis.exception;
+
+public class NotValidAvisException extends Exception {
+
+  public NotValidAvisException(String message) {
+    super(message);
+  }
+}
\ No newline at end of file