================================== FAILURES ===================================
______________________ test_expect_file_chooser[firefox] ______________________

page = <Page url='about:blank'>

    def test_expect_file_chooser(page: Page) -> None:
        page.set_content("<input type=file></input>")
        with page.expect_file_chooser() as fc_info:
            page.click('input[type="file"]')
        fc = fc_info.value
>       fc.set_files(
            {"name": "test.txt", "mimeType": "text/plain", "buffer": b"Hello World"}
        )
E       AttributeError: 'NoneType' object has no attribute 'set_files'

tests\sync\test_input.py:24: AttributeError