这是我要测试的虚拟类:
class Meter:
def __init__(self, meterInfo):
self.b1pos = meterInfo['b1pos']
def setMeter(self):
print 'Initializing'
try:
print 'Connecting'
except IOError as message:
print message
def readSignal(self, ele_name):
try:
if ele_name in ("b1", "b2"):
readValue = 0.0
readValue1 = 0.0
return readValue, readValue1
else:
readValue = 0.0
readValue1 = 0.0
return readValue, readValue1
except IOError as message:
print message
这是我的单元测试:
class TestMeter(unittest.TestCase):
def testSetMeter(self):
m = meter.Meter({'b1pos': 'b1pos'})
self.assertRaises(IOError, m.setMeter())
def testReadSignal(self):
m = meter.Meter({'b1pos': 'b1pos'})
a, b = m.readSignal('b1')
self.assertTrue(isinstance(a, numbers.Number))
self.assertTrue(isinstance(b, numbers.Number))
self.assertRaises(IOError, m.readSignal('b1'))
if __name__ == '__main__':
unittest.main()
对于testSetMeter(),我没有任何问题,但是对于testReadSignal(),它会告诉我:“TypeError:'tuple'object is not callable” 我知道这个错误与雷达信号的返回有关,但是我怎么能修复它呢? 我试过:
def testReadSignal(self):
m = meter.Meter({'b1pos': 'b1pos'})
a, b = m.readSignal('b1')
self.assertTrue(isinstance(a, numbers.Number))
self.assertTrue(isinstance(b, numbers.Number))
with self.assertRaises(IOError):
m.readSignal('b1')
但这就是结果:
AssertionError: IOError not raised
必须使用pytest.raises公司相反。参见docs。你知道吗
测试似乎也会失败,因为这些方法是捕获异常,而不是引发异常。你知道吗
与
我解决了这个问题
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