用python写12个自动化测试的代码

好的，以下是12个用Python编写的自动化测试代码示例：

1. 测试网站是否正常运行

import requests

def test_website_status():
    response = requests.get('http://www.example.com')
    assert response.status_code == 200

2. 测试登录功能

from selenium import webdriver

def test_login():
    driver = webdriver.Chrome()
    driver.get('http://www.example.com/login')
    username = driver.find_element_by_name('username')
    password = driver.find_element_by_name('password')
    submit_button = driver.find_element_by_id('submit')
    username.send_keys('myusername')
    password.send_keys('mypassword')
    submit_button.click()
    assert driver.current_url == 'http://www.example.com/home'
    driver.quit()

3. 测试API功能

import requests

def test_api():
    response = requests.get('http://api.example.com/users')
    assert len(response.json()) > 0

4. 测试数据库连接

import psycopg2

def test_database_connection():
    conn = psycopg2.connect(database='mydatabase', user='myuser', password='mypassword', host='localhost', port='5432')
    cur = conn.cursor()
    cur.execute('SELECT COUNT(*) FROM users')
    result = cur.fetchone()
    assert result[0] > 0
    cur.close()
    conn.close()

5. 测试邮件发送

import smtplib
from email.mime.text import MIMEText

def test_email():
    sender = 'myemail@example.com'
    receiver = 'youremail@example.com'
    message = MIMEText('This is a test email.')
    message['Subject'] = 'Test Email'
    message['From'] = sender
    message['To'] = receiver
    smtp_server = smtplib.SMTP('smtp.example.com', 587)
    smtp_server.starttls()
    smtp_server.login(sender, 'mypassword')
    smtp_server.sendmail(sender, receiver, message.as_string())
    smtp_server.quit()

6. 测试文件读写

def test_file_io():
    with open('test.txt', 'w') as f:
        f.write('This is a test file.')
    with open('test.txt', 'r') as f:
        content = f.read()
    assert content == 'This is a test file.'

7. 测试加密解密

from cryptography.fernet import Fernet

def test_encryption():
    key = Fernet.generate_key()
    fernet = Fernet(key)
    message = b'This is a secret message.'
    encrypted_message = fernet.encrypt(message)
    decrypted_message = fernet.decrypt(encrypted_message)
    assert message == decrypted_message

8. 测试图像处理

from PIL import Image

def test_image_processing():
    image = Image.open('test.png')
    grayscale_image = image.convert('L')
    grayscale_image.save('test_grayscale.png')
    assert grayscale_image.mode == 'L'

9. 测试网络连接

import socket

def test_network_connection():
    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    result = sock.connect_ex(('www.example.com', 80))
    assert result == 0
    sock.close()

10. 测试正则表达式

import re

def test_regular_expression():
    pattern = r'\d+'
    string = 'This is a test string with 123 numbers.'
    matches = re.findall(pattern, string)
    assert matches == ['123']

11. 测试时间处理

import datetime

def test_datetime():
    now = datetime.datetime.now()
    tomorrow = now + datetime.timedelta(days=1)
    assert tomorrow > now

12. 测试命令行执行

import subprocess

def test_command_line_execution():
    result = subprocess.run(['ls', '-l'], capture_output=True, text=True)
    assert 'test.txt' in result.stdout

这些示例代码可以帮助您理解如何使用Python编写自动化测试用例。当然，具体的测试用例还要根据不同的需求来编写。