All Dingo routes return 404 when phpunit testing - lumen

Question

original posted at https://github.com/dingo/api/issues/1472
I'm using Lumen 5.1 and DingoApi 1.0.x to do my api development, and now I'm trying to do some acceptance testing. Following the documentation of Lumen, here is how I do it:
Here is a simplified routes definition in app\Http\routes.php:
$app->get('/', function () use ($app) {
return "Welcome to mysite.com";
});
$api = app('Dingo\Api\Routing\Router');
$api->version('v1', function ($api) {
$api->group([
'prefix' => 'dealer',
'middleware' => 'checkH5ApiSign'
], function ($api) {
$api->get('list', 'App\Http\Controllers\Credit\DealerController#index');
$api->get('staff_list', 'App\Http\Controllers\Credit\DealerController#getStaffList');
});
}
I can access both routes defined using $app or $api(dingo) in browser or via postman, they both can return a 200 response. But whenever I'm trying to access those routes in phpunit, the $app defined route like / is responding okay with 200 code, but all routes defined with $api(dingo) will response with 404 status code. Here is my test code:
class DealerTest extends TestCase
{
public function testTest()
{
$this->get('/')->assertResponseOk();
$this->get('/dealer/list')->assertResponseOk();
$this->get('/dealer/staff_list')->assertResponseOk();
}
}
and ran result:
PHPUnit 5.7.5 by Sebastian Bergmann and contributors.
F 1 / 1 (100%)
Time: 590 ms, Memory: 6.00MB
There was 1 failure:
1) DealerTest::testTest
Expected status code 200, got 404.
Failed asserting that false is true.
E:\Gitrepos\api.fin.youxinjinrong.com\vendor\laravel\lumen-framework\src\Testing\AssertionsTrait.php:19
E:\Gitrepos\api.fin.youxinjinrong.com\tests\DealerTest.php:8
FAILURES!
Tests: 1, Assertions: 2, Failures: 1.
I tried ran through Dingo package code to find the cause, but failed. All other related issue could not solve my problem either. So please help me.
update
I followed the code flow, and see that FastRoute\DataGenerator\RegexBasedAbstract.php is doing the addRoute() operation, I dumped $this->staticRoutes) in that addRoute() method, see that it's doing okay both inside browser and under phpunit. But weird enough, the following call of ->getData() is behaving differenctly: in browser all static routes are returned, but not in phpunit.
Hope this can somehow be helpful. I'm still digging this problem...

Answer 1

So I got mine to work by doing this;
Using the example in the example used in creating the issue:
class DealerTest extends TestCase
{
public function testTest()
{
$this->get('/')->assertResponseOk();
$this->get('/dealer/list')->assertResponseOk();
$this->get('/dealer/staff_list')->assertResponseOk();
}
}
becomes
class DealerTest extends TestCase
{
public function testTest()
{
$this->get(getenv('API_DOMAIN') . '/v1/')->assertResponseOk();
$this->get(getenv('API_DOMAIN') . '/v1/dealer/list')->assertResponseOk();
$this->get(getenv('API_DOMAIN') . '/v1/dealer/staff_list')->assertResponseOk();
}
}
I hope this helps