fix(translator): reject missing locales early

Author: andrepimpao

src/Exception/NoSuchTranslationException.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace ProgrammatorDev\FluentValidator\Exception;
+
+class NoSuchTranslationException extends \RuntimeException
+{
+    public function __construct(string $locale)
+    {
+        $message = sprintf('Translation for locale "%s" was not found.', $locale);
+
+        parent::__construct($message);
+    }
+}

src/Translator/Translator.php

@@ -3,6 +3,7 @@
 namespace ProgrammatorDev\FluentValidator\Translator;
 
 use Composer\InstalledVersions;
+use ProgrammatorDev\FluentValidator\Exception\NoSuchTranslationException;
 use Symfony\Component\Translation\Loader\XliffFileLoader;
 use Symfony\Contracts\Translation\TranslatorInterface;
 
@@ -16,6 +17,10 @@ public function __construct(private string $locale)
         $packagePath = InstalledVersions::getInstallPath('symfony/validator');
         $resourcePath = sprintf('%s/Resources/translations/validators.%s.xlf', $packagePath, $this->locale);
 
+        if (!is_file($resourcePath)) {
+            throw new NoSuchTranslationException($this->locale);
+        }
+
         $this->translator = new \Symfony\Component\Translation\Translator($this->locale);
         $this->translator->addLoader('xlf', new XliffFileLoader());
         $this->translator->addResource('xlf', $resourcePath, $this->locale);
@@ -30,4 +35,4 @@ public function getLocale(): string
     {
         return $this->locale;
     }
-}
+}

tests/ValidatorTest.php

@@ -3,6 +3,7 @@
 namespace ProgrammatorDev\FluentValidator\Test;
 
 use ProgrammatorDev\FluentValidator\Exception\NoSuchConstraintException;
+use ProgrammatorDev\FluentValidator\Exception\NoSuchTranslationException;
 use ProgrammatorDev\FluentValidator\Exception\ValidationFailedException;
 use ProgrammatorDev\FluentValidator\Translator\Translator;
 use ProgrammatorDev\FluentValidator\Validator;
@@ -135,6 +136,14 @@ public function testSetTranslator(): void
         $this->assertEquals('Este valor não deveria ser vazio.', $violations->get(0)->getMessage());
     }
 
+    public function testSetTranslatorThatDoesNotExist(): void
+    {
+        $this->expectException(NoSuchTranslationException::class);
+        $this->expectExceptionMessage('Translation for locale "zz" was not found.');
+
+        new Translator('zz');
+    }
+
     public function testResetClearsTranslator(): void
     {
         Validator::setTranslator(new Translator('pt'));