tests/test_size_to_str.py

#!/usr/bin/python3

__author__ = "Barry Warsaw <[email protected]>, James Hunt, Michael Vogt"

import unittest

import apt_pkg

import testcommon


class SizeToStrTestCase(testcommon.TestCase):
    """Test apt_pkg.size_to_str"""

    DATA = {
        # XXX: note the trailing spaces for some of these entries!
        10 ** 1: "10 ",
        10 ** 2: "100 ",
        10 ** 3: "1000 ",
        10 ** 4: "10.0 k",
        10 ** 5: "100 k",
        10 ** 6: "1000 k",
        10 ** 7: "10.0 M",
        10 ** 8: "100 M",
        10 ** 9: "1000 M",
        10 ** 10: "10.0 G",
        10 ** 11: "100 G",
        10 ** 12: "1000 G",
        10 ** 13: "10.0 T",
        10 ** 14: "100 T",
        10 ** 15: "1000 T",
        10 ** 16: "10.0 P",
        10 ** 17: "100 P",
        10 ** 18: "1000 P",
        10 ** 19: "10.0 E",
        10 ** 20: "100 E",
        10 ** 21: "1000 E",
        10 ** 22: "10.0 Z",
        10 ** 23: "100.0 Z",
        10 ** 24: "1000 Z",
        #10 ** 25: "10.0 Y",
        10 ** 26: "100 Y",
        10 ** 27: "1000 Y",
        # That's our limit :)
        10 ** 28: "10000 Y",
        0: "0 ",
        1: "1 ",
        1024: "1024 ",
        10240: "10.2 k",
        102400: "102 k",
        1024000: "1024 k",
        10240000: "10.2 M",
        102400000: "102 M",
        2147483647: "2147 M",
        2147483648: "2147 M",
        1024000000: "1024 M",
        10240000000: "10.2 G",
        9: "9 ",
        99: "99 ",
        999: "999 ",
        9999: "9999 ",
        99999: "100.0 k",
        999999: "1000 k",
        9999999: "10000 k",
        99999999: "100.0 M",
        999999999: "1000 M",
        9999999999: "10000 M",
        99999999999: "100.0 G",
        999999999999: "1000 G",
        9999999999999: "10000 G",
        99999999999999: "100.0 T",
        999999999999999: "1000 T",
        9999999999999999: "10.0 P",
        99999999999999999: "100 P",
        999999999999999999: "1000 P",
        9999999999999999999: "10.0 E",
        99999999999999999999: "100 E",
        999999999999999999999: "1000 E",
        9999999999999999999999: "10.0 Z",
        999999999999999999999999: "1000 Z",
    }

    def test_from_data(self):
        for k, v in self.DATA.items():
            size = apt_pkg.size_to_str(k)
            msg = "size_to_str(%s) returned '%s', expected '%s'" % (k, size, v)
            self.assertEqual(size, v, msg)

    def test_raise_on_unsupported(self):
        for v in ["hello", None, {}, [], ()]:
            with self.assertRaises(TypeError):
                apt_pkg.size_to_str(v)


class RegressionTestCase(testcommon.TestCase):
    """Regression test for LP: #1030278"""

    def test_no_overflow_error(self):
        # LP: #1030278 produces an overflow error in size_to_str() with a big
        # value under Python 3.
        self.assertEqual(apt_pkg.size_to_str(2147483648000000000000), '2147 E')


if __name__ == "__main__":
    unittest.main()