我正在努力为 Python 编写单元测试,使用 Pyodbc 查询本地 SQL Server 数据库。
以下代码运行...
import pyodbc
import random
import unittest
from EmailSender import EmailSender
class TestSequenceFunctions(unittest.TestCase):
def setUp(self):
self.email_sender = EmailSender()
self.other_email_sender = EmailSender()
def test_for_initialisation_variables(self):
"""
Tests to check that the object is created properly
"""
self.assertTrue(self.email_sender.server)
self.assertTrue(self.email_sender.errorLogFile)
self.assertTrue(self.email_sender.connection)
self.assertTrue(self.email_sender.cursor)
self.assertTrue(self.email_sender.siteAuth)
self.assertTrue(self.email_sender.apiCallsLimitPerRun)
def test_SQL_Server_Connection(self):
for value in self.email_sender.cursor.execute("select * from sys.tables"):.
print value
但是,当我向代码添加第二个几乎相同的测试时......
import pyodbc
import random
import unittest
from EmailSender import EmailSender
class TestSequenceFunctions(unittest.TestCase):
def setUp(self):
self.email_sender = EmailSender()
self.other_email_sender = EmailSender()
def test_for_initialisation_variables(self):
"""
Tests to check that the object is created properly
"""
self.assertTrue(self.email_sender.server)
self.assertTrue(self.email_sender.errorLogFile)
self.assertTrue(self.email_sender.connection)
self.assertTrue(self.email_sender.cursor)
self.assertTrue(self.email_sender.siteAuth)
self.assertTrue(self.email_sender.apiCallsLimitPerRun)
def test_SQL_Server_Connection(self):
for value in self.email_sender.cursor.execute("select * from sys.tables"):.
print value
def test_getSites_method(self):
for value in self.other_email_sender.cursor.execute("select * from sys.tables"):.
print value
第三次测试失败并显示以下错误消息:
错误:('IM001','[IM001] [unixODBC][驱动程序管理器]驱动程序不支持此功能 (0) (SQLRowCount)')
附注
请注意,我一开始只创建了一个 email_sender 对象,但无法连续运行查询,因此将查询更改为相同,当这不起作用时,添加了另一个连接和光标,以便可以没有问题:光标的位置。
最佳答案
找到了解决方案 - 基本上问题出在(默认)tearDown 方法中。
发生了一些事情,所以光标没有被重置 - 我用下面的方法覆盖了该方法,嘿,很快,它起作用了:
def tearDown(self):
"""
Make sure we reset the cursor
"""
if self.email_sender.connection:
self.email_sender.connection.close()
del self.email_sender
关于python - 在单元测试中使用 pyodbc,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/18615265/