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How to use check_no_alert method in lettuce_webdriver

Best Python code snippet using lettuce_webdriver_python

lti.py

Source:lti.py

...58    world.css_find('.link_lti_new_window').first.click()59    alert = world.browser.get_alert()60    assert alert is not None61    assert len(world.browser.windows) == 162def check_no_alert():63    """64    Make sure the alert has gone away.65    Note that the splinter documentation indicates that66    get_alert should return None if no alert is present,67    however that is not the case. Instead a68    NoAlertPresentException is raised.69    """70    try:71        assert_is_none(world.browser.get_alert())72    except NoAlertPresentException:73        pass74@step('I accept the permission alert and view the LTI$')75def accept_lti_permission_alert(_step):76    parent_window = world.browser.current_window  # Save the parent window77    # To start with you should only have one window/tab78    assert len(world.browser.windows) == 179    alert = world.browser.get_alert()80    alert.accept()81    check_no_alert()82    # Give it a few seconds for the LTI window to appear83    world.wait_for(84        lambda _: len(world.browser.windows) == 2,85        timeout=5,86        timeout_msg="Timed out waiting for the LTI window to appear."87    )88    # Verify the LTI window89    check_lti_popup(parent_window)90@step('I reject the permission alert and do not view the LTI$')91def reject_lti_permission_alert(_step):92    alert = world.browser.get_alert()93    alert.dismiss()94    check_no_alert()95    assert len(world.browser.windows) == 196@step('I view the LTI but incorrect_signature warning is rendered$')97def incorrect_lti_is_rendered(_step):98    assert world.is_css_present('iframe', wait_time=2)99    assert not world.is_css_present('.link_lti_new_window', wait_time=0)100    assert not world.is_css_present('.error_message', wait_time=0)101    # inside iframe test content is presented102    check_lti_iframe_content("Wrong LTI signature")103@step('the course has correct LTI credentials with registered (.*)$')104def set_correct_lti_passport(_step, user='Instructor'):105    coursenum = TEST_COURSE_NAME106    metadata = {107        'lti_passports': ["correct_lti_id:test_client_key:test_client_secret"]108    }...

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