test email signup flow

backend/tests/Fakes/FakeEmailFactory.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace Tests\Fakes;
+
+use App\Email\EmailFactory;
+
+class FakeEmailFactory implements EmailFactory
+{
+    private ?string $lastToken = null;
+
+    public function makeConfirmationEmail(string $token): string
+    {
+        $this->lastToken = $token;
+
+        return "confirm with {$token}";
+    }
+
+    public function getLastToken(): ?string
+    {
+        return $this->lastToken;
+    }
+}