Laravel 5.2-门验证问题：isset中的偏移量类型非法或为空

跑步：Laravel 5.2 主题:关卡 错误：isset中的偏移量类型非法或为空

这是我的启动方法中的

AuthServiceProvider

    foreach ($this->getPermissions() as $permission) {
        $gate->define($permission->code, function (User $user) use ($permission) {
            if ($user->isAdmin())
                return true;
            return $user->hasPermission($permission);
        });
    }

我的权限和角色已植入数据库

在我的

User

类中，有以下方法（上面使用）

现在，当我查看我的站点时，没有任何问题。 当我运行测试时，为了确保普通用户拥有0权限，我得到了错误

我的测试班：

/** @test */
public function a_user_with_no_role_can_do_nothing()
{
    $user = factory(User::class)->create();
    $permissions = Permission::all();

    foreach ($permissions as $perm)
        $this->assertFalse($user->can($perm));    // line 43
}

这将导致以下错误：

There was 1 error:

1) UsersTest::a_user_with_no_role_can_do_nothing
ErrorException: Illegal offset type in isset or empty

C:\xampp\htdocs\dev\itcdash\vendor\laravel\framework\src\Illuminate\Auth\Access\Gate.php:321
C:\xampp\htdocs\dev\itcdash\vendor\laravel\framework\src\Illuminate\Auth\Access\Gate.php:265
C:\xampp\htdocs\dev\itcdash\vendor\laravel\framework\src\Illuminate\Auth\Access\Gate.php:243
C:\xampp\htdocs\dev\itcdash\vendor\laravel\framework\src\Illuminate\Auth\Access\Gate.php:199
C:\xampp\htdocs\dev\itcdash\vendor\laravel\framework\src\Illuminate\Foundation\Auth\Access\Authorizable.php:18
C:\xampp\htdocs\dev\itcdash\tests\acl\UsersTest.php:43
C:\xampp\php\pear\PHPUnit\TextUI\Command.php:176
C:\xampp\php\pear\PHPUnit\TextUI\Command.php:129

FAILURES!
Tests: 1, Assertions: 0, Errors: 1.

为什么我会犯这个错误

谢谢大家!

There was 1 error:

1) UsersTest::a_user_with_no_role_can_do_nothing
ErrorException: Illegal offset type in isset or empty

C:\xampp\htdocs\dev\itcdash\vendor\laravel\framework\src\Illuminate\Auth\Access\Gate.php:321
C:\xampp\htdocs\dev\itcdash\vendor\laravel\framework\src\Illuminate\Auth\Access\Gate.php:265
C:\xampp\htdocs\dev\itcdash\vendor\laravel\framework\src\Illuminate\Auth\Access\Gate.php:243
C:\xampp\htdocs\dev\itcdash\vendor\laravel\framework\src\Illuminate\Auth\Access\Gate.php:199
C:\xampp\htdocs\dev\itcdash\vendor\laravel\framework\src\Illuminate\Foundation\Auth\Access\Authorizable.php:18
C:\xampp\htdocs\dev\itcdash\tests\acl\UsersTest.php:43
C:\xampp\php\pear\PHPUnit\TextUI\Command.php:176
C:\xampp\php\pear\PHPUnit\TextUI\Command.php:129

FAILURES!
Tests: 1, Assertions: 0, Errors: 1.