Function test_upload_file_with_bound_arg

tests/integration/test_upload.py:684–722

Upload via an on_drop handler bound with an extra arg and verify it arrives. Regression test for https://github.com/reflex-dev/reflex/issues/5290: extra args bound to an upload handler must reach the backend handler, not just the compiled event spec. Args: tmp_path: pytest

(
    tmp_path, upload_file: AppHarness, driver: WebDriver
)

def test_upload_file_with_bound_arg(
    tmp_path, upload_file: AppHarness, driver: WebDriver
):
    """Upload via an on_drop handler bound with an extra arg and verify it arrives.

    Regression test for https://github.com/reflex-dev/reflex/issues/5290: extra
    args bound to an upload handler must reach the backend handler, not just the
    compiled event spec.

    Args:
        tmp_path: pytest tmp_path fixture.
        upload_file: harness for UploadFile app.
        driver: WebDriver instance.
    """
    assert upload_file.app_instance is not None
    poll_for_token(driver, upload_file)
    clear_btn = driver.find_element(By.ID, "clear_uploads")
    clear_btn.click()

    upload_box = get_upload_box(driver, upload_root_id="quaternary")
    assert upload_box

    exp_name = "bound_arg.txt"
    target_file = tmp_path / exp_name
    target_file.write_text("bound arg upload contents!")

    # Selecting a file fires on_drop, which carries the bound "resume-field" arg.
    upload_box.send_keys(str(target_file))

    upload_done = driver.find_element(By.ID, "upload_done")
    assert upload_file.poll_for_value(upload_done, exp_not_equal="false") == "true"

    # The bound arg must have reached the handler.
    field_display = driver.find_element(By.ID, "quaternary_field")
    assert upload_file.poll_for_value(field_display, exp_not_equal="") == "resume-field"

    # The uploaded file itself must still arrive.
    names_display = driver.find_element(By.ID, "quaternary_files")
    assert Path(exp_name).name in names_display.text


@pytest.mark.parametrize("upload_root_id", [None, "secondary"])