feat(sales): validate PDF timezone parameter

tests/Unit/Sale/AdminAppSalePdfRequestTest.php

@@ -0,0 +1,55 @@
+<?php
+
+namespace Tests\Unit\Sale;
+
+use App\Domains\Sale\Requests\AdminAppSaleModificationPdfRequest;
+use App\Domains\Sale\Requests\AdminAppSalePdfRequest;
+use Illuminate\Support\Facades\App;
+use Illuminate\Support\Facades\Validator;
+use Tests\TestCase;
+
+class AdminAppSalePdfRequestTest extends TestCase
+{
+    public function test_pdf_requests_accept_php_timezone_identifiers_including_browser_aliases(): void
+    {
+        $requests = [
+            new AdminAppSalePdfRequest,
+            new AdminAppSaleModificationPdfRequest,
+        ];
+
+        foreach ($requests as $request) {
+            $this->assertTrue(Validator::make([
+                'timezone' => 'America/Argentina/Buenos_Aires',
+            ], $request->rules())->passes());
+
+            $this->assertTrue(Validator::make([
+                'timezone' => 'America/Buenos_Aires',
+            ], $request->rules())->passes());
+
+            $this->assertFalse(Validator::make([
+                'timezone' => 'Invalid/Timezone',
+            ], $request->rules())->passes());
+
+            $this->assertFalse(Validator::make([], $request->rules())->passes());
+        }
+    }
+
+    public function test_invalid_timezone_message_uses_the_application_locale(): void
+    {
+        $request = new AdminAppSalePdfRequest;
+
+        App::setLocale('es');
+        $spanishValidator = Validator::make(['timezone' => 'Invalid/Timezone'], $request->rules());
+        $this->assertSame(
+            'La zona horaria enviada por el navegador no es válida.',
+            $spanishValidator->errors()->first('timezone'),
+        );
+
+        App::setLocale('en');
+        $englishValidator = Validator::make(['timezone' => 'Invalid/Timezone'], $request->rules());
+        $this->assertSame(
+            'The timezone sent by the browser is invalid.',
+            $englishValidator->errors()->first('timezone'),
+        );
+    }
+}