Laravel Mock Request function only and header - php

Question

I test code with PHPUnit 9.0.
I use Laravel framework 8.* and PHP 7.4
I struggle to test a function that uses request()
Here is a very short version of the code I have to test:
trait SomeTrait
{
function someFunction()
{
//1. retrieve only the documents
$documents = request()->only('documents');
....
//set an array called $header
$header = [ 'Accept-Encoding' => 'application/json'];
//2. add to Array $header if someKey is available in headers
if (request()->headers->has('someKey'))
{
$header = Arr::add($header, 'someKey', request()->header('someKey'));
}
}
}
At first (1.) it has to get the documents from a request. I solved this with an mock of the request and it works:
$requestMock = Mockery::mock(Request::class)
->makePartial()
->shouldReceive('only')
->with('documents')
->andReturn($document_data);
app()->instance('request', $requestMock->getMock());
$this->someFunction();
I create a mock of request class, that returns $document_data when request()->only('documents'); is called in someFunction().
But then the code request()->headers->has('someKey') returns the error:
Call to a member function has() on null
Can anybody help and explain how I can test the code?

Answer 1

Thanks for the help! I found a solution without mocking the request - sometimes it's easier than you think :D
//create a request
$request = new Request();
//replace the empty request with an array
$request->replace(['documents' => $all_documents]);
//replace the empty request header with an array
$request->headers->replace(['someKey' => 'someValue']);
//bind the request
app()->instance('request', $request);