diff --git a/tests/ArchTest.php b/tests/ArchTest.php
new file mode 100644
index 0000000..4eff914
--- /dev/null
+++ b/tests/ArchTest.php
@@ -0,0 +1,21 @@
+<?php
+
+declare(strict_types=1);
+
+test('globals')
+    ->expect(['dd', 'dump', 'ray'])
+    ->not->toBeUsed();
+
+test('classes')
+    ->expect('My')
+    ->toUseStrictTypes();
+
+test('contracts')
+    ->expect('My\Contracts')
+    ->interfaces()
+    ->toOnlyBeUsedIn('My', 'My\Contracts');
+
+test('concerns')
+    ->expect('My\Concerns')
+    ->traits()
+    ->toOnlyBeUsedIn('My', 'My\Concerns');