create-flet-control-integration-tests

Write async pytest tests using the flet_app or flet_app_function fixtures from integration_tests/conftest.py. Use assert_control_screenshot for visual checks and tester finders like find_by_tooltip for functional assertions.

Run the target test file with the FLET_TEST_GOLDEN=1 environment variable to generate or update goldens, then re-run without it to verify. Only regenerate goldens for intentional visual changes.

flet_app uses loop_scope="module" and suits stable visual and bulk screenshot tests, while flet_app_function uses loop_scope="function" for tests that mutate state and need a fresh app per test. The two scopes must not be mixed in one file.

Place tests in the suite matching the control area under sdk/python/packages/flet/integration_tests/controls, such as core, material, cupertino, theme, services, or types. Prefer adding to an existing file for the same control.

Flaky screenshot tests usually come from non-deterministic content such as random values, time-varying data, or unset theme modes and sizes. Set theme_mode explicitly and use fixed sizes, padding, and spacing for deterministic rendering.