diff --git a/tests/unit/RandomOrderConfirmationNumberGeneratorTest.php b/tests/unit/RandomOrderConfirmationNumberGeneratorTest.php
new file mode 100644
index 0000000..8ac9ea9
--- /dev/null
+++ b/tests/unit/RandomOrderConfirmationNumberGeneratorTest.php
@@ -0,0 +1,16 @@
+<?php
+
+use Illuminate\Foundation\Testing\WithoutMiddleware;
+use Illuminate\Foundation\Testing\DatabaseMigrations;
+use Illuminate\Foundation\Testing\DatabaseTransactions;
+
+class RandomOrderConfirmationNumberGeneratorTest extends TestCase
+{
+    // Must be 24 characters long
+    // Can only contain uppercase letters and numbers
+    // Cannot contain ambiguous characters
+    // All order confirmation numbers must be unique
+    //
+    // ABCDEFGHJKLMNPQRSTUVWXYZ
+    // 23456789
+}