playwright也是可以做接口测试的，但个人觉得还是没有requests库强大，但和selenium相比的话，略胜一筹，毕竟支持API登录，也就是说可以不用交互直接调用接口操作了。
怎么用
既然是API的测试了，那肯定就别搞UI自动化那套，搞什么浏览器交互，那叫啥API测试，纯属扯淡。
也不像有些博主更懒，直接贴的官方例子，难道我用你再帮我复制一次？
来下面，说明下使用playwright如何做API测试？
实例化request对象
示例代码如下：
playwright.request.new_context()
没错，实例化后，就是调API，看吧，其实也不是很难是不是？
实战举栗
这里用我自己写的学生管理系统的部分接口来做演示，并对部分常用api做以说明，代码示例都是用同步的写法。
1、GET请求
示例如下：
def testQueryStudent(playwright: Playwright):"""查询学生"""url = 'http://localhost:8090/studentFindById'param = {'id': 105}request_context = playwright.request.new_context()response = request_context.get(url=url, params=param)assert response.okassert response.json()print('\n', response.json())
效果：
2、POST请求
示例代码：
def testAddStudent(playwright: Playwright):"""新增学生:return:"""url = 'http://localhost:8090/studentAdd'request_body = {"className": "banji","courseName": "wuli","email": "ales@qq.com","name": "ales","score": 70,"sex": "boy","studentId": "92908290"}header = {"Content-Type": "application/json"}request_context = playwright.request.new_context()response = request_context.post(url=url, headers=header, data=request_body)assert response.okassert response.json()print('\n', response.json())
效果：
3、PUT请求
示例代码：
def testUpdateStudents(playwright: Playwright):"""修改学生"""url = 'http://localhost:8090/studentUpdate/100'param = {'studentId': "id" + str(100),'name': "name" + str(100),'score': 100,"sex": "girl","className": "class" + str(100),"courseName": "course" + str(100),"email": str(100) + "email@qq.com"}request_context = playwright.request.new_context()response = request_context.put(url=url, form=param)assert response.okassert response.json()print('\n', response.json())
效果：
4、DELETE请求
示例代码：
def testDeleteStudents(playwright: Playwright):"""删除学生"""url = 'http://localhost:8090/studentDelete/' + str(105)request_context = playwright.request.new_context()response = request_context.delete(url=url)assert response.okassert response.json()print('\n', response.json())效果：
5、上传文件
这个是特例吧，按照官方给的方法，我真的是死活也不能成功，一直都是提示上上传文件不能为空，也不到为啥，结果我用了一个替代方案，就是抓包模拟的构造入参，才成功，也是曲折呀。
示例代码：
def test_upload_file(playwright: Playwright):'''上传文件:param playwright::return:'''# 创建请求上下文request_context = playwright.request.new_context()# 定义上传文件的URLupload_url = "http://localhost:8090/fileUpload"# 文件路径file_path = "d:/demo.txt"# 获取文件名和MIME类型filename = file_path.split('/')[-1]mime_type, _ = mimetypes.guess_type(file_path)if not mime_type:mime_type = 'application/octet-stream'# 读取文件内容with open(file_path, 'rb') as file:file_content = file.read()# 构造multipart/form-data的边界字符串boundary = '---------------------' + str(random.randint(1e28, 1e29 - 1))# 构造请求体body = (f'--{boundary}\r\n'f'Content-Disposition: form-data; name="file"; filename="{filename}"\r\n'f'Content-Type: {mime_type}\r\n\r\n'f'{file_content.decode("utf-8") if mime_type.startswith("text/") else file_content.hex()}'f'\r\n--{boundary}--\r\n').encode('utf-8')# 设置请求头headers = {'Content-Type': f'multipart/form-data; boundary={boundary}',}# 发起POST请求response = request_context.post(upload_url, data=body, headers=headers)# 检查响应assert response.status == 200, f"Upload failed with status: {response.status}"assert response.okassert response.json()print('\n', response.json())
效果：
官方写法：
# 读取文件内容
with open(file_path, 'rb') as file:file_content = file.read()response = request_context.post(upload_url, multipart={"fileField": {"name": "demo.txt","mimeType": "text/plain","buffer": file_content,}})
print('\n', response.json())
效果：
官方写法，我不知道为啥，有大侠知道，还请帮忙给个例子，小弟不胜感激呀！
写在最后
我还是觉得微软很强呀，这套框架确实比selenium略胜一筹，综合来看。
终于有时间了，来更新一篇，感觉文章对你有用，转发留言都可，谢谢！
对了，那个上传文件的为啥不行，还请前辈们帮看一下呀！
