How to use the toolium.visual_test.VisualTest function in toolium

def assert_screenshot_page_element(self, filename, threshold=0, exclude_elements=[], force=False):
            VisualTest(self.driver_wrapper, force).assert_screenshot(self.web_element, filename, file_suffix,
                                                                     threshold, exclude_elements)

def assert_screenshot(self, element, filename, threshold=0, exclude_elements=[], driver_wrapper=None, force=False):
        """Assert that a screenshot of an element is the same as a screenshot on disk, within a given threshold.

        :param element: either a WebElement, PageElement or element locator as a tuple (locator_type, locator_value).
                        If None, a full screenshot is taken.
        :param filename: the filename for the screenshot, which will be appended with ``.png``
        :param threshold: percentage threshold for triggering a test failure (value between 0 and 1)
        :param exclude_elements: list of CSS/XPATH selectors as a string or WebElement objects that must be excluded
                                 from the assertion.
        :param driver_wrapper: driver wrapper instance
        :param force: if True, the screenshot is compared even if visual testing is disabled by configuration
        """
        file_suffix = self.get_method_name()
        VisualTest(driver_wrapper, force).assert_screenshot(element, filename, file_suffix, threshold, exclude_elements)

def assert_full_screenshot(self, filename, threshold=0, exclude_elements=[], driver_wrapper=None, force=False):
        """Assert that a driver screenshot is the same as a screenshot on disk, within a given threshold.

        :param filename: the filename for the screenshot, which will be appended with ``.png``
        :param threshold: percentage threshold for triggering a test failure (value between 0 and 1)
        :param exclude_elements: list of CSS/XPATH selectors as a string or WebElement objects that must be excluded
                                 from the assertion.
        :param driver_wrapper: driver wrapper instance
        :param force: if True, the screenshot is compared even if visual testing is disabled by configuration
        """
        file_suffix = self.get_method_name()
        VisualTest(driver_wrapper, force).assert_screenshot(None, filename, file_suffix, threshold, exclude_elements)

def assert_screenshot(element_or_selector, filename, threshold=0, exclude_elements=[], driver_wrapper=None,
                          force=False):
        VisualTest(driver_wrapper, force).assert_screenshot(element_or_selector, filename, file_suffix, threshold,
                                                            exclude_elements)

def assert_screenshot_page_element(self, filename, threshold=0, exclude_elements=[], force=False):
        VisualTest(self.driver_wrapper, force).assert_screenshot(self.web_element, filename, file_suffix, threshold,
                                                                 exclude_elements)

def assert_screenshot(self, filename, threshold=0, exclude_elements=[], force=False):
        """Assert that a screenshot of the element is the same as a screenshot on disk, within a given threshold.

        :param filename: the filename for the screenshot, which will be appended with ``.png``
        :param threshold: percentage threshold for triggering a test failure (value between 0 and 1)
        :param exclude_elements: list of WebElements, PageElements or element locators as a tuple (locator_type,
                                 locator_value) that must be excluded from the assertion
        :param force: if True, the screenshot is compared even if visual testing is disabled by configuration
        """
        VisualTest(self.driver_wrapper, force).assert_screenshot(self.web_element, filename, self.__class__.__name__,
                                                                 threshold, exclude_elements)

def assert_full_screenshot(filename, threshold=0, exclude_elements=[], driver_wrapper=None, force=False):
        VisualTest(driver_wrapper, force).assert_screenshot(None, filename, file_suffix, threshold, exclude_elements)