Best way to get autocomplete for $this with beforeEach?

[faustbrian]

When using beforeEach with $this there won't be proper autocomplete since $this references the current test case, not the current class like with a PHPUnit test case. Is there any way to get properly autocomplete into tests so that in the below example the $this->arrayMapper would actually be inspectable in an IDE and provide autocomplete? @var and @property don't see to do anything in PHPStorm nor VSCode.

<?php declare(strict_types=1);

describe('ArrayMapper', function () {
    beforeEach(function () {
        $this->validator = new ArrayValidator();
        $castConfiguration = new CastConfiguration([]);
        $castResolver = new CastResolver($castConfiguration);
        $reflectionCache = new WeakMapReflectionCache();
        $castApplicator = new CastApplicator($castResolver, $reflectionCache);
        $this->parameterMapper = new ParameterMapper($castApplicator);
        $this->pipeline = new DataPipeline(
            new DataPipeResolver($reflectionCache),
            new SinglePassPipelineStrategy()
        );
        $this->metadataCache = new ClassMetadataCache();

        $this->arrayMapper = new ArrayMapper(
            $this->validator,
            $this->parameterMapper,
            $this->pipeline,
            $this->metadataCache
        );
    });

    describe('happy paths', function () {
        test('maps array data to simple DTO', function () {
            $data = [
                'name' => 'John Doe',
                'email' => '[email protected]'
            ];


            // ISSUE: $this->arrayMapper won't have any autocomplete because it's not defined in the test case
            $result = $this->arrayMapper->map($data, SimpleTestDto::class);

            expect($result)->toBeInstanceOf(SimpleTestDto::class);
            expect($result->name)->toBe('John Doe');
            expect($result->email)->toBe('[email protected]');
        });
    });
});