Question 175837 in Laravel Question posted in
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Can Laravel 9 replace interface implementation in tests?

Here is an example of how I declared my configuration for MyService

public function register(): void
{
    $this->app->when(MyService::class)
        ->needs(IUser::class)
        ->give(fn (Application $app) => $app->make(ICompanyUserProvider::class)->getCompanyUser());
}

So I want to replace ICompanyUserProvider implementation for testing purposes.

I have already seen a solution like this

$this->app->bind(
    ICompanyUserProvider::class, 
    $this->app->runningUnitTests() ? ProviderStub::class : Provider::class
);

it works, but I find it inappropriate, I don’t think it’s a good practice to mix enviorenments in a single configuration.

Here is what else I tried so far:

use IlluminateFoundationTestingTestCase as BaseTestCase;

abstract class TestCase extends BaseTestCase
{
    public function setUp(): void
    {
        parent::setUp();
     
        $this->app->bind(ICompanyUserProvider::class, ProviderStub::class);
    }
}

but it does not work (provider not being replaced with a stub one).

Any ideas, please?

Tags:

2

Answers


  1. 0

    Your above code should be working.

    use IlluminateFoundationTestingTestCase as BaseTestCase;

// add use from your ProviderStub class.

abstract class TestCase extends BaseTestCase
{
    public function setUp(): void
    {
        parent::setUp();
     
        $this->app->bind(ICompanyUserProvider::class, ProviderStub::class);
    }
}

    Important

    Confirm your test case extends TestCase from use TestsTestCase; instead of use PHPUnitFrameworkTestCase;.

    Feature tests will extends from TestsTestCase; but unit tests is not.

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  2. 0

    Use app->instance to replace an instance in applicationContainer, here is an example:

    use IlluminateFoundationTestingTestCase as BaseTestCase;

abstract class TestCase extends BaseTestCase
{
    public function setUp(): void
    {
        parent::setUp();

        $this->app->instance(ICompanyUserProvider::class, new ProviderStub());
    }
}

    If you look at the swap method from Facade class
    IlluminateSupportFacadesFacade::swap in line 182, they used the same method for replacing facade accessor with a fake instance.

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