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from twisted.trial.unittest import TestCase
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from dosage.util import saneDataSize
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class SizeFormattingTests(TestCase):
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Unit tests for L{saneDataSize}.
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def check(self, size, expectedOutput):
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Check that a particular size is formatted as expected; in particular, a
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negative size should be formatted the same as a positive size, except
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with a minus sign in front.
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self.assertEqual(saneDataSize(size), expectedOutput)
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self.assertEqual(saneDataSize(-size), '-' + expectedOutput)
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def test_verySmallSize(self):
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Sizes smaller than a single byte should be formatted as bytes; this
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case is fairly pathological, so the output is somewhat nonsensical.
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self.check(0.1, '0.100 B')
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def test_normalSizes(self):
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Sizes should be formatted in the largest unit for which the size will
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not be less than a single unit.
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self.check(1, '1.000 B')
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self.check(2.075 * 2 ** 10, '2.075 kB')
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self.check(5.88 * 2 ** 20, '5.880 MB')
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self.check(13.34 * 2 ** 30, '13.340 GB')
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self.check(445.348 * 2 ** 40, '445.348 TB')
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self.check(34.25 * 2 ** 50, '34.250 PB')
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self.check(3.14 * 2 ** 60, '3.140 EB')
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self.check(57.892 * 2 ** 70, '57.892 ZB')
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self.check(999.99 * 2 ** 80, '999.990 YB')
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def test_veryLargeSize(self):
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Sizes larger than 1024 yottabytes should be formatted as yottabytes.
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self.check(5567254 * 2 ** 80, '5567254.000 YB')
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dosage/test/test_util.py
