Change the approach to detecting visibility of the progress bar

from selenium.webdriver import ActionChains, Firefox

from selenium.webdriver.common.by import By

from selenium.webdriver.support import expected_conditions

from selenium.webdriver.support.wait import WebDriverWait

def test_tool_components(driver: Firefox) -> None:

    wait = WebDriverWait(driver, timeout=10)

    run_button = driver.find_element(By.ID, "execution_test_run")

    cancel_button = driver.find_element(By.ID, "execution_test_cancel")

    progress_bar_running = driver.find_element(By.ID, "progress_bar_test_show_progress")

    progress_bar_finished = driver.find_element(By.ID, "progress_bar_test_show_ok")

    outputs = driver.find_element(By.ID, "tool_outputs_test_outputs")

    errors = driver.find_element(By.ID, "tool_outputs_test_errors")

    ActionChains(driver).click(run_button).perform()

    ActionChains(driver).click(run_button).pause(2).perform()

    # The progress bar should be visible and the output textareas should have content.

    wait.until(expected_conditions.visibility_of_element_located((By.ID, "progress_bar_test_show_progress")))

    assert driver.find_element(By.ID, "tool_outputs_test_outputs").get_attribute("value") == "test_output"

    assert driver.find_element(By.ID, "tool_outputs_test_errors").get_attribute("value") == "test_error"

    running_style = progress_bar_running.get_attribute("style")

    assert running_style and "display: none;" not in running_style

    assert outputs.get_attribute("value") == "test_output"

    assert errors.get_attribute("value") == "test_error"

    ActionChains(driver).click(cancel_button).perform()

    ActionChains(driver).click(cancel_button).pause(2).perform()

    # The finished bar should be visible.

    wait.until(expected_conditions.visibility_of_element_located((By.ID, "progress_bar_test_show_ok")))

    running_style = progress_bar_running.get_attribute("style")

    assert running_style and "display: none;" in running_style

    finished_style = progress_bar_finished.get_attribute("style")

    assert finished_style and "display: none;" not in finished_style