Trouble faking a Laravel HttpClient response - laravel

Question

I am trying to test the following bit of code:
DimonaClient is just a simple wrapper around a Laravel HttpClient; simplified function here:
The getDeclaration() response is a \Illuminate\Http\Client\Response
What I am trying to do in my test is:
Mock the DimonaClient class so I don't create an actual api call
"Mock" (use Laravel's Http::response()) the response I want so that I can test that a 200 w/ certain statuses dispatches the appropriate event (also mocked, but not relevant here)
My test code looks like this:
My issue(s) seem to be:
the getDeclaration() has an expectation of Illuminate\Http\Client\Response but I can't seem to create anything that will satisfy that (a new Response wants a MessageInterface, etc, etc... )
I don't actually need getDeclaration() to return anything for my testing, so I wonder if I should be mocking this differently in any case (I base this assumption on Http::response handling the internal code I'm testing for things like $response->ok(), instead of a Mockery expectation)
I feel like I'm one small step away from making this work, but going round in circles trying to hook it up correctly.
TIA!

Answer 1

If you are using Http Facade, you don't need to mock DimonaCient. You are nearly there with your test, but let me show you what you would have done:
/** #test */
public function it_can_handle_an_approved_submission(): void
{
Http::fake([
'*' => Http::response([
'declarationStatus' => [
'result' => DimonaDeclarationStatus::ACCEPTED,
'dimonaPeriodId' => $this->faker->numerify('############'),
],
],
]);
$dimonaDeclarationId = $this->faker->numerify('############');
// Do your normal call, and then assertions
}
Doing this, you will tell Http to fake any URL, because we are using *. I would recommend you use $this->endpoint/$declarationId so if it does not match, you will also know you did not hit the right endpoint.
I am not sure what Laravel you are using but this is available since Laravel 6+, check Http fake URLs.