dash_subprocess example

Start the server in subprocess with waitress-serve. Kill the process in teardown.

from pytest_dash.wait_for import wait_for_text_to_equal

def test_subprocess(dash_subprocess):
    driver = dash_subprocess.driver
    dash_subprocess('test_apps.simple_app')

    value_input = driver.find_element_by_id('value')
    value_input.clear()
    value_input.send_keys('Hello dash subprocess')

    wait_for_text_to_equal(driver, '#out', 'Hello dash subprocess')

Note

This fixture is slower than threaded due to the process spawning.