Laravel5.5PHPunit测试-"尚未设置外观根".

问题是你不能在setUpBeforeClass中这样做,因为很多东西都是在setUp方法中运行的.如果你看一下这个运行顺序,你会看到setUpBeforeClass在setUp方法和TestCase类在方法中做很多事情之前运行setUp.它看起来像这样:

protected function setUp()
{
    if (! $this->app) {
        $this->refreshApplication();
    }

    $this->setUpTraits();

    foreach ($this->afterApplicationCreatedCallbacks as $callback) {
        call_user_func($callback);
    }

    Facade::clearResolvedInstances();

    Model::setEventDispatcher($this->app['events']);

    $this->setUpHasRun = true;
}

所以,你应该做的是创造自己setUp和tearDown与自己的实现这样的方法:

protected function setUp()
{
   parent::setUp();
   // your code goes here
}

protected function tearDown()
{
   parent::tearDown();
   // your code goes here
}