The Selenium (seventeen): unittest unit testing framework (III)

1. With the unittest script analysis

Maybe there any necessary connection between you and now my heart is still in doubt, unittest framework and we've written Web automated testing? Of course, since unittest can organize, run the test case, then why not organize, run the Web test automation do? Let us now begin with an example and see it.

# -*- 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.Chrome()
        self.driver.implicitly_wait(30)
        self.base_url = "http://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").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:
            return False
        return True

    def is_alert_present(self):
        try:
            self.driver.switch_to.alert()
        except NoAlertPresentException:
            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()

I believe we now no longer feel strange to see when this script, here we come to analyze these diamante have done what to do.

import unittest

First introduced unittest framework.

class BaiduTest(unittest.TestCase):

BaiduTest class inheritance TestCase class called unittest framework of the standard test class.

def setUp(self):
    self.driver = webdriver.Chrome()
    self.driver.implicitly_wait(30)
    self.base_url = "http://www.baidu.com/"
    self.verificationErrors = []
    self.accept_next_alert = True

setUp initialization for setting, before execution is performed before each test case, it echoes tearDown method, which is performed after each test case execution. Here initialization defines the browser starts and the base URL address.

implicitly_wait () have already learned, the element is provided on page recessive waiting time is 30 seconds.

Next, define the empty verificationErrors array, the error message when the script runs will be recorded in this array.

Accept_next_alert defined variable indicating whether to continue to accept the next warning, the initial state is True.

def test_baidu(self):
    driver = self.driver
    driver.get(self.base_url + "/")
    driver.find_element_by_id("kw").clear()
    driver.find_element_by_id("kw").send_keys("selenium")
    driver.find_element_by_id("su").click()

test_baidu is placed in our test script, this part we are very familiar with, it is no longer here to explain.

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

is_element_present method used to find the page element exists, to receive a positioning method element (How) and target value (What) by find_element (). If the element is positioned to return True, otherwise an exception is thrown and returns False. try ... except ... for the Python language exception handling.

def is_alert_present(self):
    try:
        self.driver.switch_to.alert()
    except NoAlertPresentException:
        return False
    return True

is_alert_present () method for determining whether there is a warning current page frame, using switch_to.alert () method to capture provided WebDriver alert box on the page. If the alert box to capture the returns True, otherwise an exception is thrown NoAlertPresentException type, and returns False.

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

close_alert_and_get_its_text () to close the warning and get a warning message. First, get a warning by switch_to_alert (), get a warning box information through text. Then determine if statements by state accept_next_alert in setUp () has been initialized state is True, If True, a warning is accepted by accept (), otherwise dismiss () ignore this warning.

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

tearDown () method after each test method execution call this method for cleaning up after the test case execution, such as exit the browser, turn off the drive, resumption of state and other use cases.

VerificationErrors empty array defined in setUp () method, where by assertEqual () is empty comparator which, if the process is performed with the embodiment is empty, it is no abnormality, the AssertionError responsible throws.

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

Test method to run through unittest.main () method in the current file, and run the default matching methods start with test.

2. Write Web test

In front of a lot of space details the unittest unit testing framework, which aims to use it to run a Web test automation scripts. Prior to this, simply look at the test planning directory.

test_project/

　　test_case/

　　　　test_baidu.py

　　　　test_youdao.py

　　report/

　　　　login.txt

　　runtest.py 

Create a Web test case.

test_baidu.py：

from selenium import webdriver
import unittest
import time

class MyTest(unittest.TestCase):

    def setUp(self):
        self.driver = webdriver.Chrome()
        self.driver.maximize_window()
        self.driver.implicitly_wait(10)
        self.base_url = "http://www.baidu.com"

    def test_baidu(self):
        driver = self.driver
        driver.get(self.base_url+"/")
        driver.find_element_by_id("kw").clear()
        driver.find_element_by_id("kw").send_keys("unittest")
        driver.find_element_by_id("su").click()
        time.sleep(2)
        title = driver.title
        self.assertEqual(title,"unittest_百度搜索")

    def tearDown(self):
        self.driver.quit()

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

test_youdao.py：

from selenium import webdriver
import unittest
import time

class MyTest(unittest.TestCase):

    def setUp(self):
        self.driver = webdriver.Chrome()
        self.driver.maximize_window()
        self.driver.implicitly_wait(10)
        self.base_url = "http://www.youdao.com"

    def test_youdao(self):
        driver = self.driver
        driver.get(self.base_url+"/")
        driver.find_element_by_id (__name__" TranslateContent " ) .clear () 
        driver.find_element_by_id ( " translateContent " ) .send_keys ( " the webdriver " ) 
        driver.find_element_by_xpath ( ' // * [@ ID = "form"] / Button ' ) .click () 
        the time.sleep ( 2 ) 
        title = driver.title 
        self.assertEqual (title, " [translation webdriver] What does it mean _ _ _ phonetic pronunciation of English webdriver sentence _ _ _ use online translation _ way dictionary " ) 


    DEF tearDown (Self): 
        Self. driver.close () 

IF  == "__main__":
    unittest.main()

Created under test_case / directory respectively Baidu search test_baidu.py and proper way search test_youdao.py test files, and writing Web automated test cases in the test file.

runtest.py：

Import the unittest 

# directory as the current directory defined test 
test_dir = ' ../test_project/test_case ' 
Discover = unittest.defaultTestLoader.discover (test_dir, pattern = ' Test * .py ' ) 

IF  the __name__ == " __main__ " : 
    Runner = unittest.TextTestRunner () 
    runner.run (the Discover)

You may have a doubt, report catalog is doing what? Perhaps you have already guessed from the name which is used to store test report, then how can the test results generate a log.txt file it? Here it needs dos command.

First, open the Windows command prompt, enter to perform directory ... / test_project / directory.

Open log.txt file, as follows:

I do not know why, pycharm run no problem, use the cmd command line on the problem.