示例#1
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 def test_multiply_check(self):
     self.assertEqual(multiply(3, 3), 9)
示例#2
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 def test_none(self):
     with self.assertRaises(ValueError):
         multiply(2, None)
示例#3
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 def test_zero(self):
     with self.assertRaises(ValueError):
         multiply(100, 0)
示例#4
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 def test_precision(self):
     self.assertEqual(multiply(2, .22), .44)