Cannot properly mock injected class from constructor

[betaWeb]

Laravel Version

9.52.16

PHP Version

8.1.22

Database Driver & Version

No response

Description

Hello 👋

I wan't to mock a simple cache repository class, that is injected in another class constructor (and used in several methods of this class) like so :

class FooService // dummy class name for the example
{
    public function __construct(private readonly CacheRepository $cacheRepository)
    {
    }
    
    public function doStuffWhichCallsInjectedCacheRepository(): void
    {
      // ...
      $value = $this->cacheRepository->getCacheValue(...);
      // ...
    }
}

In my test, I wan't to mock it :

$ids = [1,2,3,4,5]; // dummy data for the example
$this->partialMock(CacheRepository::class)
    ->shouldReceive('getCacheValue')
    ->times(5)
    ->andReturn(...$ids);

app(FooService::class)->doStuffWhichCallsInjectedCacheRepository();

So the class (FooService in this example) in which the cache repository is injected is called, has his method correctly called and stuff, but the mock does not work properly.

However, if I edit my class FooService with an on-the-fly CacheRepository class resolution from IOC, like so, my tests works properly :

class FooService // dummy class name for the example
{    
    public function doStuffWhichCallsInjectedCacheRepository(): void
    {
      $cacheRepository = app(CacheRepository::class);
      
      // ...
      
      $value = $cacheRepository->getCacheValue(...);
      
      // ...
    }
}

In conclusion it seems that dependencies injected in constructor cannot be mocked properly, but for on-the-fly resolved dependencies it's ok.

FYI, private readonly is not the issue here ;)

If anybody has an explanation or a workaround to allow both dependencies injected in a constructor AND mock works together.. thanks !

Steps To Reproduce

/

[henzeb]

you should register this just like you would in a service provider.

$this->app->bind(CacheRepository::class, $yourMock);

otherwise the container doesn't know you want to mock the CacheRepository class.

[betaWeb]

you should register this just like you would in a service provider.

$this->app->bind(CacheRepository::class, $yourMock);

otherwise the container doesn't know you want to mock the CacheRepository class.

@henzeb unfortunately I already tried it and it doesn't work :(