Test fails on faked PDF upload and accompanying form data

Hello everyone. I am stumped as to why this test fails to pass validation. We are using a dedicated request class to handle the validation. In real world use, this validation logic doesn't throw any errors. Here is the validation logic:

public function rules()
    {
        return [
            'file' => 'required|file|mimes:pdf',
            'type' => 'required|string',
            'agency_id' => 'nullable|exists:agencies,id',
            'exportable' => 'nullable|boolean',
            'restricted' => 'nullable|boolean',
        ];
    }
    public function messages()
    {
        return [
            'file.required' => 'A file is required.',
            'file.file' => 'The file must be a valid file.',
            'file.mimes' => 'The file must be a PDF.',
            'type.required' => 'The type field is required.',
            'type.string' => 'The type must be a string.',            
            'agency_id.exists' => 'The selected agency ID is invalid.',
        ];
    }

Here is the test logic:

$user = User::factory()->create([
      'role_id' => Role::where('name', 'admin')->first()->id,
]);

$file = UploadedFile::fake()->create(
    'document.pdf', 200, 'application/pdf'
);

$data =  [   
     'file' => $file,         
     'type' => 'memo',
     'agency_id' => 1,
     'exportable' => false,
     'restricted' => true,
];
        
$response = $this->actingAs($user)->post(route('documents.store', $data));

$response->assertStatus(200);

I have a dd of the $data array which shows that the faked PDF generated as planned.

array:5 [
  "file" => Illuminate\Http\Testing\File^ {#2759
    +name: "document.pdf"
    +tempFile: stream resource {@1063
      timed_out: false
      blocked: true
      eof: false
      wrapper_type: "plainfile"
      stream_type: "STDIO"
      mode: "r+b"
      unread_bytes: 0
      seekable: true
      uri: "/tmp/phptFIGpD"
      options: []
    }
    +sizeToReport: 204800
    +mimeTypeToReport: "application/pdf"
    -originalName: "document.pdf"
    -mimeType: "application/pdf"
    -error: 0
    -originalPath: "document.pdf"
    -test: true
    #hashName: null
    name: "document.pdf"
    tempFile: stream resource @1063
    sizeToReport: 204800
    mimeTypeToReport: "application/pdf"
    path: "/tmp"
    filename: "phptFIGpD"
    basename: "phptFIGpD"
    pathname: "/tmp/phptFIGpD"
    extension: ""
    realPath: "/tmp/phptFIGpD"
    aTime: 2025-02-04 18:27:44
    mTime: 2025-02-04 18:27:44
    cTime: 2025-02-04 18:27:44
    inode: 33652849
    size: 204800
    perms: 0100600
    owner: 501
    group: 20
    type: "file"
    writable: true
    readable: true
    executable: false
    file: true
    dir: false
    link: false
  }
  "type" => "memo"
  "agency_id" => 1
  "exportable" => false
  "restricted" => true 

And finally, here is the error I am getting from the validator when I run the test. It appears to be not accepting the PDF:

 FAILED  Tests\Feature\DocumentsTest > uploads as admin                                                                                                                   
  Expected response status code [200] but received 302.
Failed asserting that 302 is identical to 200.

The following errors occurred during the last request:

The file must be a valid file.
The file must be a PDF.

  at tests/Feature/DocumentsTest.php:36
     32▕         ];
     33▕         
     34▕         $response = $this->actingAs($user)->post(route('documents.store', $data));
     35▕ 
  ➜  36▕         $response->assertStatus(200);
     37▕     }
     38▕ }
     39▕