Laravel + Mockery InvalidCountException - laravel

Question

I am trying to mock a class to prevent it from having to call 3rd party apis. But when setting up the mock, it doesn't seem to affect the controller action. I did try replacing the $this->postJson() by manually creating instances of the Request- and OEmbedController-classes. The create()-method is getting called, but I am receiving an error from Mockery that it isn't.
What am I doing wrong here?
Error:
Mockery\Exception\InvalidCountException : Method create() from Mockery_2_Embed_Embed should be called exactly 1 times but called 0 times.
Test:
class OEmbedTest extends TestCase
{
public function tearDown()
{
Mockery::close();
}
/**
* It can return an OEmbed object
* #test
*/
public function it_can_return_an_o_embed_object()
{
$url = 'https://www.youtube.com/watch?v=9hUIxyE2Ns8';
Mockery::mock(Embed::class)
->shouldReceive('create')
->with($url)
->once();
$response = $this->postJson(route('oembed', ['url' => $url]));
$response->assertSuccessful();
}
}
Controller:
public function __invoke(Request $request)
{
$info = Embed::create($request->url);
$providers = $info->getProviders();
$oembed = $providers['oembed'];
return response()
->json($oembed
->getBag()
->getAll());
}

Answer 1

It seems you are mocking the Embed class the wrong way. If you use the Laravel facade method shouldReceive() instead of creating a Mock of the class itself, the framework will place the mock in the service container for you:
Embed::shouldReceive('create')
->with($url)
->once();
instead of
Mockery::mock(Embed::class)
->shouldReceive('create')
->with($url)
->once();
Also be aware that if the parameters your tested code passes to the mock differs from what you learned the mock with with($url), the mock considers itself uncalled. But you'll receive another error for calling a not defined method anyway.

Answer 2

I was able to solve this by using this in my test:
protected function setUp()
{
parent::setUp();
app()->instance(Embed::class, new FakeEmbed);
}
Then resolving it like this
$embed = resolve(Embed::class);
$embed = $embed->create($url);