在编写接口用例的过程中，针对一个接口，往往只是参数不同，那么参数化就非常有必要了。
seldom 中参数化的用法非常灵活，这里仅介绍@file_data() 的N种玩法。
二维列表当参数比较简单时可以试试下面的方式。
参数化数据 {"add_guest": [ ["参数错误","","", 10021,"parameter error"], ["查询为空","tom","13711001100", 10022,"event id null"], ] } 测试用例 import seldom from seldom import file_data class AddGuestTest(seldom.TestCase): @file_data("add_guest.json", key="add_guest") def test_case(self, _, real_name, phone, status, msg): payload = {"realname": real_name,"phone": phone} self.post("/api/add_guest/", data=payload) self.assertStatusCode(200) self.assertPath("status", status) self.assertPath("message", msg) if __name__ =="__main__": seldom.main(base_url="http://127.0.0.1:8000", debug=True) 列表嵌套字典当参数很多时，不便于阅读，可以通过字典的方式定义。
参数化数据 {"add_guest": [ {"name":"参数错误","real_name":"","phone":"","status": 10021,"msg":"parameter error"}, {"name":"查询为空","real_name":"tom","phone":"13711001100","status": 10022,"msg":"event id null"}, ] } 测试用例 import seldom from seldom import file_data class AddGuestTest(seldom.TestCase): @file_data("add_guest.json", key="add_guest") def test_case(self, _, real_name, phone, status, msg): payload = {"realname": real_name,"phone": phone} self.post("/api/add_guest/", data=payload) self.assertStatusCode(200) self.assertPath("status", status) self.assertPath("message", msg) if __name__ =="__main__": seldom.main(base_url="http://127.0.0.1:8000", debug=True) 复杂的数据结构我们可以将接口的入参、出参进一步拆分。
参数化数据 {"add_guest": [ {"name":"参数错误","req": {"real_name":"","phone":""},"resp": {"status": 10021,"msg":"parameter error"} }, {"name":"查询为空","req": {"real_name":"tom","phone":"13711001100"},"resp": {"status": 10022,"msg":"event id null"} } ] } 测试用例 import seldom from seldom import file_data class AddGuestTest(seldom.TestCase): @file_data("add_guest.json", key="add_guest") def test_case(self, _, req, resp): payload = {"realname": req["real_name"],"phone": req["phone"]} self.post("/api/add_guest/", data=payload) self.assertStatusCode(200) self.assertPath("status", resp["status"]) self.assertPath("message", resp["msg"]) if __name__ =="__main__": seldom.main(base_url="http://127.0.0.1:8000", debug=True) 通过json编写用例虽然不推荐用文件写用例，你想写也是可以的。
测试用例文件 {"cases": [ {"name":"参数错误","method":"post","url":"/api/add_guest/","req": {"eid":"","real_name":"","phone":""},"resp": {"status": 10021,"msg":"parameter error"} }, {"name":"查询为空","method":"post","url":"/api/add_guest/","req": {"eid": 901,"real_name":"tom","phone":"13711001100"},"resp": {"status": 10022,"msg":"event id null"} } ] } 解析测试用例 import seldom from seldom import file_data class SampleCaseTest(seldom.TestCase): @file_data("test_case.json", key="cases") def test_case(self, _, method, url, req, resp): if method =="post": payload = {"eid": req["eid"],"realname": req["real_name"],"phone": req["phone"]} self.post(url, data=payload) self.assertStatusCode(200) self.assertPath("status", resp["status"]) self.assertPath("message", resp["msg"]) elif method =="get": pass if __name__ =="__main__": seldom.main(base_url="http://127.0.0.1:8000", debug=True)最后的这种写法不是seldom推荐的，假如要测试的接口足够简单，设计一个测试方法来处理简单的接口也未尝不可。当然，往往实际项目中的用例并不足够简单。回到代码的方式编写才能足够个兼具灵活性和易用性。
最后感谢每一个认真阅读我文章的人，礼尚往来总是要有的，虽然不是什么很值钱的东西，如果你用得到的话可以直接拿走：
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