def testMinValue(self):
""" Test behavior on min_value parameter. """
s = Range(9, MiB)
self.assertEqual(s.components(), (Fraction(9, 1), MiB))
self.assertEqual(
s.components(ValueConfig(min_value=10)),
(Fraction(9216, 1), KiB)
)
s = Range("0.5", GiB)
self.assertEqual(
s.components(ValueConfig(min_value=1)),
(Fraction(512, 1), MiB)
)
self.assertEqual(
s.components(ValueConfig(min_value=Fraction(1, 10))),
(Fraction(1, 2), GiB)
)
self.assertEqual(
s.components(ValueConfig(min_value=1)),
(Fraction(512, 1), MiB)
)
# when min_value is 10 and single digit on left of decimal, display
# with smaller unit.
s = Range('7.18', KiB)
self.assertEqual(s.components(ValueConfig(min_value=10))[1], B)
s = Range('9.68', TiB)
self.assertEqual(s.components(ValueConfig(min_value=10))[1], GiB)
s = Range('4.29', MiB)
self.assertEqual(s.components(ValueConfig(min_value=10))[1], KiB)
# when min value is 100 and two digits on left of decimal
s = Range('14', MiB)
self.assertEqual(
s.components(ValueConfig(min_value=100)),
(Fraction(14 * 1024, 1), KiB)
)
def testNegative(self):
""" Test construction of negative sizes. """
s = Range(-500, MiB)
self.assertEqual(s.components(), (Fraction(-500, 1), MiB))
self.assertEqual(s.convertTo(B), -524288000)
def testRoundingToBytes(self):
""" Test that second part is B when rounding to bytes. """
s = Range(500)
self.assertEqual(s.components()[1], B)
def testSIUnits(self):
""" Test binary_units param. """
s = Range(1000)
self.assertEqual(s.components(ValueConfig(binary_units=False)), (1, KB))
def testExceptionValues(self):
""" Test that exceptions are properly raised on bad params. """
s = Range(500)
with self.assertRaises(RangeValueError):
s.components(ValueConfig(min_value=-1))