diff --git a/tests/exampleTest.php b/tests/exampleTest.php
new file mode 100644
index 0000000..7077139
--- /dev/null
+++ b/tests/exampleTest.php
@@ -0,0 +1,13 @@
+<?php
+declare(strict_types=1);
+
+use PHPUnit\Framework\TestCase;
+
+final class ExampleTest extends TestCase {
+    public function testAdd() {
+        $result = 1 + 2;
+
+        $this->assertEquals(3, $result);
+    }
+}
+