项目目录下要有的内容：

 

tests目录里的测试代码 

可以先写注释梳理流程，再写代码

from selenium import webdriver
from selenium.webdriver.common.by import By


class TestSignIn:
    def test_sign_in(self):
        """测试登录功能
        步骤：
        1、输入登录url: https://v4.ketangpai.com/User/login.html
        2、输入用户名： aaa,   name=account
        3、输入密码  123,  name=pass
        4、点击登录按钮,   css=.btn-btn
        :return:
        """
        username = 'aaa'
        password = '123'
        expected = '密码有效长度是6到30个字符'

        with webdriver.Chrome(executable_path=r'D:\tests\chromedriver') as browser:
            browser.implicitly_wait(5)
            browser.maximize_window()

            # 访问url
            url = 'https://v4.ketangpai.com/User/login.html'
            browser.get(url)
            # 输入用户名
            username_el = browser.find_element(By.NAME, 'account')
            username_el.clear()
            username_el.send_keys(username)
            # 输入密码
            browser.find_element(By.NAME, 'pass').send_keys(password)
            # 点击登录
            browser.find_element(By.CSS_SELECTOR, '.btn-btn').click()
            # 获取文本
            actual = browser.find_element(By.CSS_SELECTOR, '.error-tips').text
            # actual = browser.find_element(By.CSS_SELECTOR, '.error-tips').get_attribute('name')
            assert actual == expected