[8.x] TypeError when using the Bus fake

[gbuckingham89]

• Laravel Version: 8.0.0
• PHP Version: 7.4.5
• Database Driver & Version: N/A

Description:

I'm seeing a TypeError when using the Bus fake in my tests (checking that a batch job has been dispatched):

TypeError: Argument 7 passed to Illuminate\Bus\Batch::__construct() must be of the type int, array given, called in /home/vagrant/sites/xxxx/vendor/laravel/framework/src/Illuminate/Support/Testing/Fakes/BatchRepositoryFake.php on line 56

The fake (Illuminate\Support\Testing\Fakes\BatchRepositoryFake) appears to passing an array, $batch->options as the 7th argument, where as the Illuminate\Bus\Batch class expects the 7th argument to be an integer, $failedJobs.

Steps To Reproduce:

1. Dispatch a batchable job from somewhere (in my case, from an Artisan command):

public function handle()
{
	$batch = Bus::batch([
	    new MyJob($my_model)
	])->then(function(Batch $batch) use($my_model) {
	    // Do something
	})->catch(function(Batch $batch, Throwable $e) use($my_model) {
	    // Do something
	})->finally(function(Batch $batch) use($my_model) {
	    // Do something
	})->name('my-batch')->dispatch();
}

2. Run a test that asserts using the Bus fake:

public function test_batch_dispatch()
{
    Bus::fake();

    //
    // Trigger dispatching of job (see above)
    //

    Bus::assertDispatched(MyJob::class, function(MyJob $job) use($my_model) {
	    return $job->my_model->id===$my_model->id;
	});
	Bus::assertDispatchedTimes(MyJob::class, 1);
}