Added some tests to constraint validators

tests/Validator/Constraints/UrlOrBuiltinValidatorTest.php

@@ -0,0 +1,73 @@
+<?php
+/*
+ * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
+ *
+ *  Copyright (C) 2019 - 2023 Jan Böhmer (https://github.com/jbtronics)
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as published
+ *  by the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Affero General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+namespace App\Tests\Validator\Constraints;
+
+use App\Validator\Constraints\UrlOrBuiltin;
+use App\Validator\Constraints\UrlOrBuiltinValidator;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Validator\Test\ConstraintValidatorTestCase;
+
+class UrlOrBuiltinValidatorTest extends ConstraintValidatorTestCase
+{
+
+    protected function createValidator(): UrlOrBuiltinValidator
+    {
+        return new UrlOrBuiltinValidator();
+    }
+
+    public function testNullIsValid(): void
+    {
+        $this->validator->validate(null, new UrlOrBuiltin());
+        $this->assertNoViolation();
+    }
+
+    public function testEmptyStringIsValid(): void
+    {
+        $this->validator->validate('', new UrlOrBuiltin());
+        $this->assertNoViolation();
+    }
+
+    public function testValidUrlIsValid(): void
+    {
+        $this->validator->validate('https://example.com', new UrlOrBuiltin());
+        $this->assertNoViolation();
+    }
+
+    public function testValidBuiltinIsValid(): void
+    {
+        $this->validator->validate('%FOOTPRINTS%/test/footprint.png', new UrlOrBuiltin());
+        $this->assertNoViolation();
+    }
+
+    public function testInvalidUrlIsInvalid(): void
+    {
+        $constraint = new UrlOrBuiltin([
+            'message' => 'myMessage',
+        ]);
+
+        $this->validator->validate('invalid-url', $constraint);
+
+        $this->buildViolation('myMessage')
+            ->setParameter('{{ value }}', '"invalid-url"')
+            ->setCode(UrlOrBuiltin::INVALID_URL_ERROR)
+            ->assertRaised();
+    }
+}