page load time test

loadtimetest.py

"""
Measure Page Loading Time by Selenium & ChromeDriver 0.2
Performance Timing Events flow
navigationStart -> redirectStart -> redirectEnd -> fetchStart -> domainLookupStart -> domainLookupEnd
-> connectStart -> connectEnd -> requestStart -> responseStart -> responseEnd
-> domLoading -> domInteractive -> domContentLoaded -> domComplete -> loadEventStart -> loadEventEnd
by: chuang.li
"""
from time import sleep
import threading
from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC


class PageLoadTime:
    '''measure page load time with Selenium & ChromeDriver'''
    def __init__(self, url):
        self.url = url

    def setup(self):
        self.driver = webdriver.Chrome(executable_path=r'C:\python\webdriver\chromedriver.exe')

    def test_load_page(self):
        driver = self.driver
        driver.get(self.url)

        while "xx製作所" not in driver.title:
            driver.refresh()
            sleep(2)
        try:
            # waiting for whole page or search results loading
            element = WebDriverWait(driver, 50).until(EC.presence_of_element_located((By.ID, "search-num-per-page"))
    )
            if element.is_displayed(): time.sleep(1)
        except: pass
        return True

    def get_time(self):
        navigationStart = self.driver.execute_script("return window.performance.timing.navigationStart")
        responseEnd = self.driver.execute_script("return window.performance.timing.responseEnd")
        domComplete = self.driver.execute_script("return window.performance.timing.domComplete")
        loadEventEnd = self.driver.execute_script("return window.performance.timing.loadEventEnd")

        backendPerformance  = responseEnd - navigationStart
        domperformance      = domComplete - responseEnd
        frontendPerformance = loadEventEnd - responseEnd
        FinisheTime         = backendPerformance + frontendPerformance

        print("Back End: %s" % backendPerformance)
        print("Dom End: %s" % domperformance)
        print("Front End: %s" % frontendPerformance)
        print("Finish: %s" % (backendPerformance + frontendPerformance))

        return backendPerformance, domperformance, frontendPerformance, FinisheTime

    def teardown(self):
        # self.driver.delete_cookie()
        self.driver.quit()

if __name__ == "__main__":
    url = "https://www.mxxx.com/search/productsearch?cate=cgsubHighVoltageResistors&partno=MHR0307&rows=100"
    # url = "https://www.muxx.com/"
    p = PageLoadTime(url)
    p.setup()
    while p.test_load_page():
        p.get_time()
        p.teardown()
        break
    print('Done!')

    # Todo
    # def load(func, loop):
    #     for i in range(loop):
    #         print('okokok')
    #         sleep(2)

    # threads = []
    # thd = threading.Thread(target=load, args('dd', 2))
    # threads.append(t)

    # for t in threads:
    #     t.start()