diff --git a/tests/TestCase/Auth/FormAuthenticateTest.php b/tests/TestCase/Auth/FormAuthenticateTest.php
new file mode 100644
index 00000000..b2b299aa
--- /dev/null
+++ b/tests/TestCase/Auth/FormAuthenticateTest.php
@@ -0,0 +1,34 @@
+<?php
+
+namespace TinyAuth\Test\TestCase\Auth;
+
+use Cake\Controller\ComponentRegistry;
+use Cake\Controller\Controller;
+use Cake\Http\Response;
+use Cake\Http\ServerRequest;
+use Cake\TestSuite\TestCase;
+use TinyAuth\Auth\FormAuthenticate;
+
+class FormAuthenticateTest extends TestCase {
+
+	/**
+	 * @var array<string>
+	 */
+	protected array $fixtures = [
+		'plugin.TinyAuth.Users',
+	];
+
+	/**
+	 * @return void
+	 */
+	public function testAuthenticate() {
+		$request = new ServerRequest();
+		$request = $request->withData('username', 'dereuromark');
+		$request = $request->withData('password', '123');
+
+		$object = new FormAuthenticate(new ComponentRegistry(new Controller($request)));
+		$result = $object->authenticate($request, new Response());
+		$this->assertTrue((bool)$result);
+	}
+
+}