diff --git a/tests/Unit/User/FakeUserRepositoryTest.php b/tests/Unit/User/FakeUserRepositoryTest.php
new file mode 100644
index 0000000..20d8b73
--- /dev/null
+++ b/tests/Unit/User/FakeUserRepositoryTest.php
@@ -0,0 +1,50 @@
+<?php
+
+namespace Tests\Unit\User;
+
+use App\User\UseCases\CreateUserDto;
+use App\User\User;
+use App\ValueObjects\EmailAddress;
+use PHPUnit\Framework\TestCase;
+use Tests\Fakes\FakeUserRepository;
+
+class FakeUserRepositoryTest extends TestCase
+{
+    public function test_find_by_email_returns_user(): void
+    {
+        $userRepo = new FakeUserRepository();
+        $userRepo->create(new CreateUserDto(
+            email: new EmailAddress('test@test.com'),
+        ));
+
+        $user = $userRepo->findByEmail(new EmailAddress('test@test.com'));
+
+        $this->assertInstanceOf(User::class, $user);
+        $this->assertEquals('test@test.com', (string) $user->getEmail());
+    }
+
+    public function test_find_by_email_returns_null_when_not_found(): void
+    {
+        $userRepo = new FakeUserRepository();
+
+        $user = $userRepo->findByEmail(
+            new EmailAddress('missing@test.com')
+        );
+
+        $this->assertNull($user);
+    }
+
+    public function test_find_by_email_returns_fresh_instance(): void
+    {
+        $userRepo = new FakeUserRepository();
+        $created = $userRepo->create(new CreateUserDto(
+            email: new EmailAddress('test@test.com'),
+        ));
+
+        $fetched = $userRepo->findByEmail(
+            new EmailAddress('test@test.com')
+        );
+
+        $this->assertNotSame($created, $fetched);
+    }
+}