def testExceptions(self):
        self.assertRaises(SizeParamsError, Size)
        self.assertRaises(SizeParamsError, Size, bytes=500, spec="45GB")

        self.assertRaises(SizeNotPositiveError, Size, bytes=-1)

        self.assertRaises(SizeNotPositiveError, Size, spec="0")
        self.assertRaises(SizeNotPositiveError, Size, spec="-1 TB")
        self.assertRaises(SizeNotPositiveError, Size, spec="-47kb")

        s = Size(bytes=500)
        self.assertRaises(SizePlacesError, s.humanReadable, places=0)
    def _prefixTestHelper(self, bytes, factor, prefix, abbr):
        c = bytes * factor

        s = Size(bytes=c)
        self.assertEquals(s, c)

        if prefix:
            u = "%sbytes" % prefix
            s = Size(spec="%ld %s" % (bytes, u))
            self.assertEquals(s, c)
            self.assertEquals(s.convertTo(spec=u), bytes)

        if abbr:
            u = "%sb" % abbr
            s = Size(spec="%ld %s" % (bytes, u))
            self.assertEquals(s, c)
            self.assertEquals(s.convertTo(spec=u), bytes)

        if not prefix and not abbr:
            s = Size(spec="%ld" % bytes)
            self.assertEquals(s, c)
            self.assertEquals(s.convertTo(), bytes)
    def testHumanReadable(self):
        s = Size(bytes=58929971L)
        self.assertEquals(s.humanReadable(), "58.9 Mb")

        s = Size(bytes=478360371L)
        self.assertEquals(s.humanReadable(), "0.48 Gb")
    def testHumanReadable(self):
        s = Size(bytes=58929971L)
        self.assertEquals(s.humanReadable(), "58.9 Mb")

        s = Size(bytes=478360371L)
        self.assertEquals(s.humanReadable(), "0.48 Gb")
    def _prefixTestHelper(self, bytes, factor, prefix, abbr):
        c = bytes * factor

        s = Size(bytes=c)
        self.assertEquals(s, c)

        if prefix:
            u = "%sbytes" % prefix
            s = Size(spec="%ld %s" % (bytes, u))
            self.assertEquals(s, c)
            self.assertEquals(s.convertTo(spec=u), bytes)

        if abbr:
            u = "%sb" % abbr
            s = Size(spec="%ld %s" % (bytes, u))
            self.assertEquals(s, c)
            self.assertEquals(s.convertTo(spec=u), bytes)

        if not prefix and not abbr:
            s = Size(spec="%ld" % bytes)
            self.assertEquals(s, c)
            self.assertEquals(s.convertTo(), bytes)