Added very basic system to add API tokens to an user

tests/Entity/UserSystem/ApiTokenTypeTest.php

@@ -0,0 +1,50 @@
+<?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\Entity\UserSystem;
+
+use App\Entity\UserSystem\ApiTokenType;
+use PHPUnit\Framework\TestCase;
+
+class ApiTokenTypeTest extends TestCase
+{
+
+    public function testGetTokenPrefix(): void
+    {
+        $this->assertEquals('tcp_', ApiTokenType::PERSONAL_ACCESS_TOKEN->getTokenPrefix());
+    }
+
+    public function testGetTypeFromToken(): void
+    {
+        $this->assertEquals(ApiTokenType::PERSONAL_ACCESS_TOKEN, ApiTokenType::getTypeFromToken('tcp_123'));
+    }
+
+    public function testGetTypeFromTokenInvalid(): void
+    {
+        $this->expectException(\InvalidArgumentException::class);
+        ApiTokenType::getTypeFromToken('tcp123');
+    }
+
+    public function testGetTypeFromTokenNonExisting(): void
+    {
+        $this->expectException(\ValueError::class);
+        ApiTokenType::getTypeFromToken('abc_123');
+    }
+}