一般错误:1没有这样的表:Laravel单元测试中的用户

我创建了以下单元测试:

    <?php

    namespace Tests\Unit;

    use Tests\TestCase;
    use App\User;
    use App\Organization;

    class UserTest extends TestCase
    {
        public function testUserHasOwnedOrganization()
        {
            $user = factory(User::class)->create();
            $organization = factory(Organization::class)->create([
                'organizer_id' => $user->id,
            ]);

            $this->assertContains($organization, $user->owned_organizations);
        }
    }

当我运行它时,我得到:

SQLSTATE[HY000]: General error: 1 no such table: users

However, when I open up php artisan tinker:

>>> factory(App\User::class)->create()
=> App\User {#3048
     name: "Margret Armstrong",
     email: "shanel.cormier@example.net",
     email_verified_at: "2020-05-18 01:22:30",
     updated_at: "2020-05-18 01:22:30",
     created_at: "2020-05-18 01:22:30",
     id: 1,
   }

显然工厂在工作并且桌子已经存在。

这里发生了什么?

谢谢,