test user persistence

backend/tests/Unit/Shared/ValueObject/EmailAddressTest.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace Tests\Unit\Shared\ValueObject;
+
+use App\Shared\ValueObject\EmailAddress;
+use InvalidArgumentException;
+use PHPUnit\Framework\TestCase;
+
+class EmailAddressTest extends TestCase
+{
+    public function test_it_rejects_an_invalid_email_address(): void
+    {
+        $this->expectException(InvalidArgumentException::class);
+        $this->expectExceptionMessage(
+            'Invalid email address: invalid-email',
+        );
+
+        new EmailAddress('invalid-email');
+    }
+
+    public function test_it_trims_and_normalizes_the_domain(): void
+    {
+        $email = new EmailAddress(' Founder@EXAMPLE.COM ');
+
+        $this->assertSame('Founder@example.com', $email->value());
+    }
+}

backend/tests/Unit/User/UserTest.php

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+<?php
+
+namespace Tests\Unit\User;
+
+use App\Shared\ValueObject\EmailAddress;
+use App\User\User;
+use PHPUnit\Framework\TestCase;
+
+class UserTest extends TestCase
+{
+    public function test_it_exposes_its_identity_and_email(): void
+    {
+        $email = new EmailAddress('user@example.com');
+        $user = new User(id: 42, email: $email);
+
+        $this->assertSame(42, $user->getId());
+        $this->assertSame($email, $user->getEmail());
+    }
+}