def testExpMethod(self, bexp, dexp):
""" Test extracting unit for a given exponent. """
self.assertEqual(
BinaryUnits.unit_for_exp(bexp).factor,
BinaryUnits.FACTOR ** bexp
)
self.assertEqual(
DecimalUnits.unit_for_exp(dexp).factor,
DecimalUnits.FACTOR ** dexp
)
def testExpExceptions(self):
"""
Test that exceptions are properly raised.
"""
with self.assertRaises(RangeValueError):
DecimalUnits.unit_for_exp(-1)
