Check type of amounts passed to conversion, avoid MemoryError when a string is being concatenated 10^12 times. Close#48
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@ -13,6 +13,9 @@ else: # pragma: no cover
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def to_atomic(amount):
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"""Convert Monero decimal to atomic integer of piconero."""
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if not isinstance(amount, (Decimal, float) + _integer_types):
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raise ValueError("Amount '{}' doesn't have numeric type. Only Decimal, int, long and "
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"float (not recommended) are accepted as amounts.")
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return int(amount * 10**12)
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def from_atomic(amount):
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@ -1,4 +1,5 @@
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from decimal import Decimal
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import sys
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import unittest
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from monero.numbers import to_atomic, from_atomic, as_monero, PaymentID
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@ -12,6 +13,14 @@ class NumbersTestCase(unittest.TestCase):
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self.assertEqual(to_atomic(Decimal('0.000000000001')), 1)
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self.assertEqual(from_atomic(1), Decimal('0.000000000001'))
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def test_numeric_types(self):
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"Only check if conversion of given type succeeds or fails."
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self.assertTrue(to_atomic(1))
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self.assertTrue(to_atomic(1.0))
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if hasattr(sys, 'maxint'): # Python 2.x
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self.assertTrue(to_atomic(sys.maxint + 1))
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self.assertRaises(ValueError, to_atomic, '1')
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def test_rounding(self):
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self.assertEqual(to_atomic(Decimal('1.0000000000004')), 1000000000000)
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self.assertEqual(as_monero(Decimal('1.0000000000014')), Decimal('1.000000000001'))
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