def testStrWithSmallDeviations(self):
""" Behavior when deviation from whole value is small. """
Config.set_display_config(
DisplayConfig(
strip_config=StripConfig(strip=True)
)
)
eps = 1024 * Fraction(1, 100) * Fraction(1, 2)
# deviation is less than 1/2 of 1% of 1024
s = Range(16384 - (eps - 1))
self.assertEqual(str(s), "< 16 KiB")
# deviation is greater than 1/2 of 1% of 1024
s = Range(16384 - (eps + 1))
self.assertEqual(str(s), "> 15.99 KiB")
# deviation is less than 1/2 of 1% of 1024
s = Range(16384 + (eps - 1))
self.assertEqual(str(s), "> 16 KiB")
# deviation is greater than 1/2 of 1% of 1024
s = Range(16384 + (eps + 1))
self.assertEqual(str(s), "< 16.01 KiB")
def testSettingValueConfig(self, config):
""" Test that new str config is the correct one. """
Config.set_value_config(config)
self.assertEqual(str(config), str(Config.STRING_CONFIG.VALUE_CONFIG))
def testSettingDisplayConfig(self, config):
""" Test that new str config is the correct one. """
Config.set_display_config(config)
self.assertEqual(str(config), str(Config.STRING_CONFIG.DISPLAY_CONFIG))
def testValueConfigs(self):
""" Test str with various configuration options. """
Config.set_display_config(
DisplayConfig(
strip_config=StripConfig(strip=True)
)
)
# exactly 4 Pi
s = Range(0x10000000000000)
self.assertEqual(str(s), "4 PiB")
s = Range(300, MiB)
self.assertEqual(str(s), "300 MiB")
s = Range('12.6998', TiB)
self.assertEqual(str(s), "< 12.7 TiB")
# byte values close to multiples of 2 are shown without trailing zeros
s = Range(0xff)
self.assertEqual(str(s), "255 B")
# a fractional quantity is shown if the value deviates
# from the whole number of units by more than 1%
s = Range(16384 - (Fraction(1024)/100 + 1))
self.assertEqual(str(s), "< 15.99 KiB")
# test a very large quantity with no associated abbreviation or prefix
s = Range(1024**9)
self.assertEqual(str(s), "1024 YiB")
s = Range(1024**9 - 1)
self.assertEqual(str(s), "< 1024 YiB")
s = Range(1024**10)
self.assertEqual(str(s), "1048576 YiB")
s = Range(0xfffffffffffff)
self.assertEqual(str(s), "< 4 PiB")
s = Range(0xffff)
# value is not exactly 64 KiB, but w/ 2 places, value is 64.00 KiB
# so the trailing 0s are stripped.
self.assertEqual(str(s), "< 64 KiB")
Config.set_value_config(ValueConfig(max_places=3))
Config.set_display_config(
DisplayConfig(
strip_config=StripConfig(strip=True)
)
)
s = Range('23.7874', TiB)
self.assertEqual(str(s), "> 23.787 TiB")
Config.set_value_config(ValueConfig(min_value=10))
Config.set_display_config(
DisplayConfig(
strip_config=StripConfig(strip=True)
)
)
s = Range(8193)
self.assertEqual(str(s), ("8193 B"))
# if max_places is set to None, all digits are displayed
Config.set_value_config(ValueConfig(max_places=None))
Config.set_display_config(
DisplayConfig(
strip_config=StripConfig(strip=True)
)
)
s = Range(0xfffffffffffff)
self.assertEqual(
str(s),
"3.99999999999999911182158029987476766109466552734375 PiB"
)
s = Range(0x10000)
self.assertEqual(str(s), ("64 KiB"))
s = Range(0x10001)
self.assertEqual(str(s), "64.0009765625 KiB")
Config.set_value_config(ValueConfig(max_places=2))
Config.set_display_config(
DisplayConfig(
strip_config=StripConfig(strip=False)
)
)
s = Range(1024**9 + 1)
self.assertEqual(str(s), "> 1024.00 YiB")
s = Range(0xfffff)
self.assertEqual(str(s), "< 1024.00 KiB")
def tearDown(self):
""" Reset configuration to default. """
Config.set_value_config(self.str_config)
Config.set_display_config(self.display_config)
