diff --git a/src/app/Http/Requests/ReservationStoreRequest.php b/src/app/Http/Requests/ReservationStoreRequest.php
index ed426c1..8498e9a 100644
--- a/src/app/Http/Requests/ReservationStoreRequest.php
+++ b/src/app/Http/Requests/ReservationStoreRequest.php
@@ -2,9 +2,9 @@
 
 namespace App\Http\Requests;
 
+use App\Models\Reservation;
 use App\Rules\DateRangeNotOverlap;
 use Illuminate\Foundation\Http\FormRequest;
-use App\Models\Reservation;
 
 class ReservationStoreRequest extends FormRequest
 {
diff --git a/src/app/Http/Resources/ReservationResource.php b/src/app/Http/Resources/ReservationResource.php
index 845bd2a..7613482 100644
--- a/src/app/Http/Resources/ReservationResource.php
+++ b/src/app/Http/Resources/ReservationResource.php
@@ -4,7 +4,6 @@
 
 use Illuminate\Http\Request;
 use Illuminate\Http\Resources\Json\JsonResource;
-use App\Http\Resources\BookResource;
 
 class ReservationResource extends JsonResource
 {
diff --git a/src/app/Models/Reservation.php b/src/app/Models/Reservation.php
index 81ead37..a33f635 100644
--- a/src/app/Models/Reservation.php
+++ b/src/app/Models/Reservation.php
@@ -31,7 +31,7 @@ public function book(): BelongsTo
 
     public function overlapped($data): bool
     {
-        return $this->where(function ($query) use($data) {
+        return $this->where(function ($query) use ($data) {
             $query->where('date_to', '>=', $data['date_from'])
                 ->where('date_from', '<=', $data['date_to'])
                 ->where('book_id', $data['book_id']);
diff --git a/src/app/Rules/DateRangeNotOverlap.php b/src/app/Rules/DateRangeNotOverlap.php
index 9839c80..e73409d 100644
--- a/src/app/Rules/DateRangeNotOverlap.php
+++ b/src/app/Rules/DateRangeNotOverlap.php
@@ -15,9 +15,11 @@ class DateRangeNotOverlap implements DataAwareRule, ValidationRule
      * @param  \Closure(string): \Illuminate\Translation\PotentiallyTranslatedString  $fail
      */
     protected $data = [];
+
     protected $reservationModel;
 
-    public function __construct($reservationModel = Reservation::class) {
+    public function __construct($reservationModel = Reservation::class)
+    {
         $this->reservationModel = $reservationModel;
     }
 
diff --git a/src/tests/Feature/RequestsControllerTest.php b/src/tests/Feature/RequestsControllerTest.php
index 64b9458..c80c8a5 100644
--- a/src/tests/Feature/RequestsControllerTest.php
+++ b/src/tests/Feature/RequestsControllerTest.php
@@ -1,27 +1,22 @@
 <?php
 
-use App\Models\Book;
-use App\Models\Reservation;
-use App\Http\Controllers\RequestsController;
-
-
 describe('Requests Controller', function () {
 
     test('A valid request from a library manager receive a response status 200 with the correct data', function () {
 
         Http::fake([
-            "*/api/reservations" => Http::response([
-                    'requester' => 'biblio x',
-                    'date_from' => '2024-03-01 12:00:00',
-                    'date_to' => '2024-03-10 12:00:00',
-                    'book' => [
-                        'id' => 1,
-                        'title' => 'book title',
-                        'author' => 'book author',
-                        'published_at' => '2020-01-01',
-                        'isbn' => '1234567890123',
-                    ]
-                ], 200)
+            '*/api/reservations' => Http::response([
+                'requester' => 'biblio x',
+                'date_from' => '2024-03-01 12:00:00',
+                'date_to' => '2024-03-10 12:00:00',
+                'book' => [
+                    'id' => 1,
+                    'title' => 'book title',
+                    'author' => 'book author',
+                    'published_at' => '2020-01-01',
+                    'isbn' => '1234567890123',
+                ],
+            ], 200),
         ]);
 
         $jsonResponse = $this->getJson('/api/requests/reservations/valid')
@@ -36,24 +31,24 @@
                     'author' => 'book author',
                     'published_at' => '2020-01-01',
                     'isbn' => '1234567890123',
-                ]
+                ],
             ]);
     });
 
     test('A not valid request from a library manager receive a response status 422 with the errors info', function () {
 
         Http::fake([
-            "*/api/reservations" => Http::response([
-                    "message" => "The date from field must be a date before or equal to date to. (and 1 more error)",
-                    "errors" => [
-                        "date_from" => [
-                            "The date from field must be a date before or equal to date to."
-                        ],
-                        "date_to" => [
-                            "The date to field must be a date after or equal to date from."
-                        ]
-                    ]
-                ], 422)
+            '*/api/reservations' => Http::response([
+                'message' => 'The date from field must be a date before or equal to date to. (and 1 more error)',
+                'errors' => [
+                    'date_from' => [
+                        'The date from field must be a date before or equal to date to.',
+                    ],
+                    'date_to' => [
+                        'The date to field must be a date after or equal to date from.',
+                    ],
+                ],
+            ], 422),
         ]);
 
         $jsonResponse = $this->getJson('/api/requests/reservations/not-valid')
@@ -61,17 +56,17 @@
             ->assertJson([
                 'error' => 'API request failed',
                 'response' => [
-                    "message" => "The date from field must be a date before or equal to date to. (and 1 more error)",
-                    "errors" => [
-                        "date_from" => [
-                            "The date from field must be a date before or equal to date to."
+                    'message' => 'The date from field must be a date before or equal to date to. (and 1 more error)',
+                    'errors' => [
+                        'date_from' => [
+                            'The date from field must be a date before or equal to date to.',
+                        ],
+                        'date_to' => [
+                            'The date to field must be a date after or equal to date from.',
                         ],
-                        "date_to" => [
-                            "The date to field must be a date after or equal to date from."
-                        ]
-                    ]
-                ]
+                    ],
+                ],
             ]);
     });
 
-});
\ No newline at end of file
+});
diff --git a/src/tests/Feature/ReservationsControllerTest.php b/src/tests/Feature/ReservationsControllerTest.php
index 8c10873..7b25db4 100644
--- a/src/tests/Feature/ReservationsControllerTest.php
+++ b/src/tests/Feature/ReservationsControllerTest.php
@@ -20,10 +20,10 @@
 
         // act
         Reservation::create([
-            'requester'=>'biblio x',
-            'date_from'=>'2024-03-01',
-            'date_to'=>'2024-03-10',
-            'book_id'=> $book->id,
+            'requester' => 'biblio x',
+            'date_from' => '2024-03-01',
+            'date_to' => '2024-03-10',
+            'book_id' => $book->id,
         ]);
 
         $jsonResponse = $this->getJson('/api/reservations')
@@ -50,13 +50,12 @@
             'date_to' => '2024-03-10 12:00:00',
             'book_id' => $book->id,
         ])
-        ->assertStatus(201)
-        ->assertJsonPath('requester', 'biblio x')
-        ->assertJsonPath('date_from', '2024-03-01 12:00:00')
-        ->assertJsonPath('date_to', '2024-03-10 12:00:00')
-        ->assertJsonPath('book.title', $book->title);
+            ->assertStatus(201)
+            ->assertJsonPath('requester', 'biblio x')
+            ->assertJsonPath('date_from', '2024-03-01 12:00:00')
+            ->assertJsonPath('date_to', '2024-03-10 12:00:00')
+            ->assertJsonPath('book.title', $book->title);
 
-        ;
     });
 
     test('a library manager cannot create a new reservation when dates are not valid', function () {
@@ -76,11 +75,11 @@
             'date_to' => '2024-03-10 12:00:00',
             'book_id' => $book->id,
         ])
-        ->assertStatus(422)
-        ->assertJsonPath('errors', [
-            'date_from' => ['The date from field must be a date before or equal to date to.'],
-            'date_to' => ['The date to field must be a date after or equal to date from.'],
-        ]);
+            ->assertStatus(422)
+            ->assertJsonPath('errors', [
+                'date_from' => ['The date from field must be a date before or equal to date to.'],
+                'date_to' => ['The date to field must be a date after or equal to date from.'],
+            ]);
     });
 
     test('a library manager cannot create a new reservation when dates for a book overlap other reservations and dates', function () {
@@ -94,10 +93,10 @@
         ]);
 
         $reservation = Reservation::create([
-            'requester'=>'biblio x',
-            'date_from'=>'2024-03-01 12:00:00',
-            'date_to'=>'2024-03-10 12:00:00',
-            'book_id'=> $book->id,
+            'requester' => 'biblio x',
+            'date_from' => '2024-03-01 12:00:00',
+            'date_to' => '2024-03-10 12:00:00',
+            'book_id' => $book->id,
         ]);
 
         //act & assert
@@ -107,10 +106,10 @@
             'date_to' => '2024-03-20 12:00:00',
             'book_id' => $book->id,
         ])
-        ->assertStatus(422)
-        ->assertJsonPath('errors', [
-            'date_to' => ['The reservation period overlaps with a previous one.'],
-        ]);
+            ->assertStatus(422)
+            ->assertJsonPath('errors', [
+                'date_to' => ['The reservation period overlaps with a previous one.'],
+            ]);
     });
 
-});
\ No newline at end of file
+});
diff --git a/src/tests/Unit/BookTest.php b/src/tests/Unit/BookTest.php
index 27e94c8..c214fd5 100644
--- a/src/tests/Unit/BookTest.php
+++ b/src/tests/Unit/BookTest.php
@@ -1,7 +1,6 @@
 <?php
 
 use App\Models\Book;
-use App\Models\Reservation;
 use Illuminate\Foundation\Testing\DatabaseTransactions;
 use Tests\TestCase;
 
diff --git a/src/tests/Unit/DataRngeNotOverlapTest.php b/src/tests/Unit/DataRngeNotOverlapTest.php
index 83d26e6..4e92878 100644
--- a/src/tests/Unit/DataRngeNotOverlapTest.php
+++ b/src/tests/Unit/DataRngeNotOverlapTest.php
@@ -1,8 +1,7 @@
 <?php
 
-use App\Rules\DateRangeNotOverlap;
 use App\Models\Reservation;
-use Illuminate\Validation\ValidationException;
+use App\Rules\DateRangeNotOverlap;
 use Tests\TestCase;
 
 uses(TestCase::class);
@@ -41,9 +40,9 @@
     $reservation->shouldReceive('where')->once()->andReturnSelf();
     $reservation->shouldReceive('exists')->once()->andReturnTrue();
 
-    try{
+    try {
         $validator->validated();
-    } catch(Exception $e){
+    } catch (Exception $e) {
         expect($e->getMessage())->toBe('The reservation period overlaps with a previous one.');
     }
 
diff --git a/src/tests/Unit/ReservationTest.php b/src/tests/Unit/ReservationTest.php
index 471bf6d..d5ff083 100644
--- a/src/tests/Unit/ReservationTest.php
+++ b/src/tests/Unit/ReservationTest.php
@@ -14,7 +14,7 @@
             'requester' => 'biblio x',
             'date_from' => '2024-03-01',
             'date_to' => '2024-03-10',
-            'book_id' => 1
+            'book_id' => 1,
         ]
     );