add helpful exceptions for userland / traits

src/Exception/InvalidSignatureException.php

@@ -0,0 +1,21 @@
+<?php
+
+/*
+ * This file is part of the SymfonyCasts VerifyEmailBundle package.
+ * Copyright (c) SymfonyCasts <https://symfonycasts.com/>
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace SymfonyCasts\Bundle\VerifyEmail\Exception;
+
+/**
+ * @author Jesse Rushlow <jr@rushlow.dev>
+ */
+final class InvalidSignatureException extends \Exception implements VerifyEmailExceptionInterface
+{
+    public function getReason(): string
+    {
+        return 'The signature could not be validated.';
+    }
+}

tests/UnitTests/Exception/VerifyEmailExceptionTest.php

@@ -11,6 +11,7 @@
 
 use PHPUnit\Framework\TestCase;
 use SymfonyCasts\Bundle\VerifyEmail\Exception\ExpiredSignatureException;
+use SymfonyCasts\Bundle\VerifyEmail\Exception\InvalidSignatureException;
 use SymfonyCasts\Bundle\VerifyEmail\Exception\VerifyEmailExceptionInterface;
 
 /**
@@ -24,6 +25,11 @@ public function exceptionDataProvider(): \Generator
             ExpiredSignatureException::class,
             'The link to verify your email has expired. Please request a new link.',
         ];
+
+        yield [
+            InvalidSignatureException::class,
+            'The signature could not be validated.',
+        ];
     }
 
     /**