added tests API for /api/user

src/test/java/pojo/UserRequest.java

@@ -0,0 +1,19 @@
+package pojo;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+@Builder
+
+public class UserRequest {
+    private String id;
+    private String username;
+    private String firstName;
+    private String lastName;
+    private String email;
+}