Laravel S3 file upload test errors - php

Question

I am trying to write a test to mock an S3 upload which generates a pre-signed url.
Here is my test:
public function test_it_uploads_to_s3()
{
Storage::fake('s3');
$response = $this->json('POST', route('api.presignedUpload', 1), [
'name' => 'file.txt',
]);
$response->assertStatus(200)
->assertJsonStructure(['url']);
}
I'm getting the following error:
Call to undefined method League\Flysystem\Adapter\Local::getClient()
I thought I only needed to add the Storage::fake('s3'); part and it should mock S3 or am I mistaken?
Edit:
The controller function code:
$s3 = Storage::disk('s3');
$client = $s3->getDriver()->getAdapter()->getClient();
$cmd = $client->getCommand('PutObject', [
'Bucket' => \Config::get('s3.bucket'),
'Key' => 'files/' . $request->name,
'ACL' => 'private',
]);
$request = $client->createPresignedRequest($cmd, $this->expiry);
$presignedUrl = (string)$request->getUri();
return response()->json(['url' => $presignedUrl], 201);

Answer 1

I am not sure about the error you're getting with only this context but it seems that you're missing some code according to the Laravel 8.x docs for this:
public function test_it_uploads_to_s3() {
Storage::fake('s3');
$response = $this->json('POST', route('api.presignedUpload', 1), [
UploadedFile::fake()->file('file.txt')
]);
Storage::disk('s3')->assertExists('file.txt');
$response->assertStatus(200)->assertJsonStructure(['url']);
}

Answer 2

You can mock the filesystem and test this out.
use Illuminate\Support\Facades\Storage;
use Mockery;
protected static function mockPresignedUrl()
{
$storage = Mockery::mock('League\Flysystem\Adapter\Local');
$storage->shouldReceive('getAdapter')->andReturn($storage)
->shouldReceive('getClient')->andReturn($storage)
->shouldReceive('getBucket')->andReturn('s3')
->shouldReceive('getCommand')->andReturn($storage)
->shouldReceive('createPresignedRequest')->andReturn($storage)
->shouldReceive('getUri')->andReturn('https://some-presigned-url');
return $storage;
}
public function test_it_uploads_to_s3()
{
$storage = $this->mockPresignedUrl();
Storage::set('s3', $storage);
$this->putJson(route('api.presignedUpload', 1), [
'name' => 'file.txt',
])
->assertStatus(200)
->assertJson([
'url' => 'https://some-presigned-url'
]);
}