[Bug]: Fileuploads leading to errors with Filament and Livewire

[SayHeyD]

What Happened

Hi 🙋

As a disclaimer, I am not sure if this should be considered a bug or a feature request.

Currently I am developing an application with Filament (v4) and wanted to transition the E2E tests from Playwright to Pest.

The problem arises when trying to test a file upload using the FileUpload component from filament. From my limited understanding my guess is that Pest's attach() method does not properly trigger an event from Livewire that is required to correctly upload the file.

In Playwright I got this was working. The upload in the playwright test was accomplished using the FileChooser:

let fileChooserPromise = page.waitForEvent('filechooser');
await page.getByText('Drag & Drop your files or').click();
let fileChooser = await fileChooserPromise;
await fileChooser.setFiles(path.join(__dirname, '../../assets/profile_picture.png'));

The error I am getting is coming from livewire (info logs before and after included):

[2025-10-01 14:46:15] local.INFO: {"path":"\/livewire\/update","method":"POST","ip":"127.0.0.1","headers":{"user-agent":["Mozilla\/5.0 (X11; Linux x86_64) AppleWebKit\/537.36 (KHTML, like Gecko) HeadlessChrome\/140.0.7339.186 Safari\/537.36"],"referer":["http:\/\/127.0.0.1:33101\/dashboard\/740f59a9-8389-48d3-a27f-403e9cad060e\/profile?customers-edit-tab=general-information%3A%3Adata%3A%3Atab"],"origin":["http:\/\/127.0.0.1:33101"]},"user_id":"12f3b1a2-9200-4dd5-9b2c-16148fd35908","request":{"_token":"EELsbObKFairr7ibMs62CqaZ14Uh1QYulPoZaZji","components":[{"snapshot":{"data":{"data":[{"id":"740f59a9-8389-48d3-a27f-403e9cad060e","name":"New Customer Name","avatar_url":[[],{"s":"arr"}],"created_at":"2025-10-01T14:46:10.000000Z","updated_at":"2025-10-01T14:46:10.000000Z"},{"s":"arr"}],"tenant":[null,{"class":"App\\Models\\Customer","key":"740f59a9-8389-48d3-a27f-403e9cad060e","s":"mdl"}],"mountedActions":[[],{"s":"arr"}],"defaultAction":null,"defaultActionArguments":null,"defaultActionContext":null,"defaultTableAction":null,"defaultTableActionRecord":null,"defaultTableActionArguments":null,"componentFileAttachments":[[],{"s":"arr"}],"areSchemaStateUpdateHooksDisabledForTesting":false,"discoveredSchemaNames":[["form","content","headerWidgets","footerWidgets"],{"s":"arr"}]},"memo":{"id":"421OeEKbpdzflXMYwVrS","name":"app.filament.resources.customers.pages.edit-customer-profile","path":"dashboard\/740f59a9-8389-48d3-a27f-403e9cad060e\/profile","method":"GET","children":{"App\\Filament\\Resources\\Customers\\RelationManagers\\CustomerUsersRelationManager":["div","o0iHmuP0ifqxSfHQCb5J"],"App\\Filament\\Resources\\Customers\\RelationManagers\\CustomerInvitesRelationManager":["div","MtzHtxoP1XuBrEzLWG6b"],"App\\Filament\\Resources\\Customers\\RelationManagers\\CustomerProjectsRelationManager":["div","vtcHsFr55eMgpIpMIO21"]},"scripts":["183985631-2","617597185-0"],"assets":[],"errors":[],"locale":"en"},"checksum":"cbec6ea271adb6e6fed68abfa0ae50d877c653bd4dc4898dbdabb3a955d92504"},"updates":[],"calls":[{"path":"","method":"_startUpload","params":["data.avatar_url.a8931e9a-cd9c-4414-8edd-88232d2f07d4",[{"name":"profile_picture.png","size":8826,"type":"image\/png"}],false]}]}]}}  

I was not able to find an equivalent to the "FileChooser" in pest, i only found the attach() method.

How to Reproduce

• Install Laravel
• Install Filament
• Install Pest browser test plugin
• Setup a Filament panel
• Create a FileUpload form field somewhere in the filament panel, e.g. on the Profile Page
• Create Pest browser test and try to upload file via the attach() method

Sample Repository

https://github.com/SayHeyD/pest-filament-file-upload

Pest Version

4.1.1

PHP Version

8.4.12 & 8.3.26

Operation System

macOS

Notes

No response

[JacekAndrzejewski]

Probably this is related to #1495

[clarkewing]

@SayHeyD how did you manage to solve this? I'm encountering the same issue.

[SayHeyD]

@SayHeyD how did you manage to solve this? I'm encountering the same issue.

I decided to use Livewire component tests for fileuploads. But there seems to be a PR already that solves this issue, it just hasn't been merged yet: pestphp/pest-plugin-browser#177