UserTest::testUserPreferences PHP Метод

    public function testUserPreferences()
    {
        $user = factory(User::class)->create();
        $this->assertNull($user->getPreference('foo'));
        $user->setPreference('foo', 'bar');
        $this->assertEquals('bar', $user->getPreference('foo'));
        $user->deletePreference('foo');
        $this->assertNull($user->getPreference('foo'));
    }