GUI Test Framework

Out-of-process functional testing for Slint UIs.

test_converter.py

with slint_testing.Application(["./my_app"]) as aut:    root = aut.first_window.root_element    celsius    = root.query_descendants().match_id("App::celsius-input").find_first()    convert    = root.query_descendants().match_id("App::convert-button").find_first()    fahrenheit = root.query_descendants().match_id("App::fahrenheit-input").find_first()    celsius.accessible_value = "100"    convert.invoke_accessible_default_action()    assert fahrenheit.accessible_value == "212"

with slint_testing.Application(
    ["./my_app"]) as aut:  root = aut.first_window.root_element  celsius = (root
    .query_descendants()
    .match_id("App::celsius-input")
    .find_first())  convert = (root
    .query_descendants()
    .match_id("App::convert-button")
    .find_first())  fahrenheit = (root
    .query_descendants()
    .match_id("App::fahrenheit-input")
    .find_first())  celsius.accessible_value = "100"  (convert
    .invoke_accessible_default_action())  assert (fahrenheit.accessible_value
      == "212")

connected · my_app

Celsius

Fahrenheit

running…

Query the live element tree

Find elements by id, type or accessible role.

Drive real input

Set values, invoke accessible actions, and send events.

Assert on state, geometry & rendering

Check accessible values, sizes and positions, take screenshots.

Run it on the target

Launch the app under test locally, on target hardware over SSH, or in CI.

Read the testing docs Try it out now

GUI Test Framework is a commercial add‑on.