西洋樱草 2020-05-09
引言
做接口测试的时候,避免不了操作数据库。因为数据校验需要,测试数据初始化需要、一些参数化场景需要等。
数据库操作框架设计
这里主要操作mysql数据库,整体思路:
封装实现
具体代码实现:
import pymysql import json class OperateMysql(object): def __init__(self): # 数据库初始化连接 self.connect_interface_testing = pymysql.connect( "localhost", "root", "123456", "test", charset='utf8mb4', cursorclass=pymysql.cursors.DictCursor ) # 创建游标操作数据库 self.cursor_interface_testing = self.connect_interface_testing.cursor() def select_first_data(self, sql): """ 查询第一条数据 """ try: # 执行 sql 语句 self.cursor_interface_testing.execute(sql) except Exception as e: print("执行sql异常:%s"%e) else: # 获取查询到的第一条数据 first_data = self.cursor_interface_testing.fetchone() # print(first_data) # 将返回结果转换成 str 数据格式,禁用acsii编码 first_data = json.dumps(first_data,ensure_ascii=False) # self.connect_interface_testing.close() return first_data def select_all_data(self,sql): """ 查询结果集 """ try: self.cursor_interface_testing.execute(sql) except Exception as e: print("执行sql异常:%s"%e) else: first_data = self.cursor_interface_testing.fetchall() first_data = json.dumps(first_data,ensure_ascii=False) # self.connect_interface_testing.close() return first_data def del_data(self,sql): """ 删除数据 """ res = {} try: # 执行SQL语句 result = self.cursor_interface_testing.execute(sql) # print(result) if result != 0: # 提交修改 self.connect_interface_testing.commit() res = {'删除成功'} else: res = {'没有要删除的数据'} except: # 发生错误时回滚 self.connect_interface_testing.rollback() res = {'删除失败'} return res def update_data(self,sql): """ 修改数据 """ try: self.cursor_interface_testing.execute(sql) self.connect_interface_testing.commit() res = {'更新成功'} except Exception as e: self.connect_interface_testing.rollback() res = {'更新删除'} return res def insert_data(self,sql,data): """ 新增数据 """ try: self.cursor_interface_testing.execute(sql,data) self.connect_interface_testing.commit() res = {data,'新增成功'} except Exception as e: res = {'新增失败',e} return res def conn_close(self): # 关闭数据库 self.cursor_interface_testing.close() if __name__ == "__main__": # ()类的实例化 om = OperateMysql() # 新增 data = [{'id': 1, 'name': '测试', 'age': 15}, {'id': 2, 'name': '老王', 'age': 10}, {'id': 3, 'name': '李四', 'age': 20}] for i in data: i_data = (i['id'],i['name'],i['age']) insert_res = om.insert_data( """ INSERT INTO test_student (id,name,age) VALUES (%s,%s,%s) """,i_data ) print(insert_res) # 查询 one_data = om.select_first_data( """ SELECT * FROM test_student; """ ) all_data = om.select_all_data( """ SELECT * FROM test_student; """ ) print(one_data) # all_data字符串类型的list转list print("查询总数据:%s",len(json.loads(all_data)),"分别是:%s",all_data) # 修改 update_data = om.update_data( """ UPDATE test_student SET name = '王五' WHERE id = 1; """ ) print(update_data) # 删除 del_data = om.del_data( """ DELETE FROM test_student WHERE id in (1,2,3); """ ) print(del_data) # 关闭游标 om.conn_close()
运行结果:
为了方便演示,先注释删除数据的sql,再执行程序: