unittest在Python單元測試中很常見，下面藉助IDE錄製的指令碼並匯出來分析它的框架。

在百度首頁輸入selenium，空格，刪除空格，然後回車搜尋，錄製如下：

將錄製完的指令碼匯出，另存為baidu_test.py

開啟另存為的指令碼，其內容如下：

# -*- coding: utf-8 -*-
from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.support.ui import Select
from selenium.common.exceptions import NoSuchElementException
from selenium.common.exceptions import NoAlertPresentException
import unittest, time, re

class BaiduTest(unittest.TestCase):
    def setUp(self):
        self.driver = webdriver.Firefox()#
        self.driver.implicitly_wait(30)
        self.base_url = "https://www.baidu.com/"
        self.verificationErrors = []
        self.accept_next_alert = True
    
    def test_baidu(self):
        driver = self.driver
        driver.get(self.base_url + "/")
        driver.find_element_by_id("kw").click()
        driver.find_element_by_id("kw").clear()
        driver.find_element_by_id("kw").send_keys("Selenium")
        driver.find_element_by_id("su").click()
    
    def is_element_present(self, how, what):
        try: self.driver.find_element(by=how, value=what)
        except NoSuchElementException, e: return False
        return True
    
    def is_alert_present(self):
        try: self.driver.switch_to_alert()
        except NoAlertPresentException, e: return False
        return True
    
    def close_alert_and_get_its_text(self):
        try:
            alert = self.driver.switch_to_alert()
            alert_text = alert.text
            if self.accept_next_alert:
                alert.accept()
            else:
                alert.dismiss()
            return alert_text
        finally: self.accept_next_alert = True
    
    def tearDown(self):
        self.driver.quit()
        self.assertEqual([], self.verificationErrors)

if __name__ == "__main__":
    unittest.main()
 

1、setup（）裡面大部分熟悉，不過有些還是第一次見：

self.verificationErrors = []  #指令碼執行時，錯誤的資訊將被列印到這個列表中。

self.accept_next_alert = True  #是否繼續接受下一下警告

2、這個測試操作程式碼，熟悉：

<span style="font-family: Arial, Helvetica, sans-serif;">def test_baidu(self):</span>

        driver = self.driver
        driver.get(self.base_url + "/")
        driver.find_element_by_id("kw").click()
        driver.find_element_by_id("kw").clear()
        driver.find_element_by_id("kw").send_keys("Selenium")
        driver.find_element_by_id("su").click()
 

#這個是判斷頁面是否有元素，作用不大  

def is_element_present(self, how, what):
        try: self.driver.find_element(by=how, value=what)
        except NoSuchElementException, e: return False
        return True

    def is_alert_present(self):
        try: self.driver.switch_to_alert()
        except NoAlertPresentException, e: return False
        return True
 

    def close_alert_and_get_its_text(self):
        try:
            alert = self.driver.switch_to_alert()
            alert_text = alert.text
            if self.accept_next_alert:
                alert.accept()
            else:
                alert.dismiss()
            return alert_text
        finally: self.accept_next_alert = True

    def tearDown(self):
        self.driver.quit()
        self.assertEqual([], self.verificationErrors)