add tests

tests/GuzzleFactoryTest.php

@@ -0,0 +1,35 @@
+<?php
+
+/**
+ * Copyright (c) D3 Data Development (Inh. Thomas Dartsch)
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ *
+ * https://www.d3data.de
+ *
+ * @copyright (C) D3 Data Development (Inh. Thomas Dartsch)
+ * @author    D3 Data Development - Daniel Seifert <info@shopmodule.com>
+ * @link      https://www.oxidmodule.com
+ */
+
+declare(strict_types=1);
+
+namespace D3\OxidGuzzleFactory\tests;
+
+use D3\OxidGuzzleFactory\GuzzleFactory;
+
+class GuzzleFactoryTest extends ApiTestCase
+{
+    /**
+     * @test
+     * @return void
+     * @covers \D3\OxidGuzzleFactory\GuzzleFactory::create
+     */
+    public function testCreate(): void
+    {
+        $instance = GuzzleFactory::create();
+
+        $this->assertInstanceOf(GuzzleFactory::class, $instance);
+    }
+}