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[2.7] bpo-32107 - Backport bitmask check fix (GH-4576) #4590

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Merged
merged 2 commits into from
Nov 29, 2017
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[2.7] bpo-32107 - Backport bitmask check fix (GH-4576) #4590

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764ca53
bpo-32107 - Backport bitmask check fix to Python 2.7
warsaw Nov 27, 2017
6e892fd
We can only remove the check for the 42nd bit in the backport
warsaw Nov 27, 2017
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24 changes: 11 additions & 13 deletions Lib/test/test_uuid.py
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Original file line number Diff line number Diff line change
Expand Up @@ -429,54 +429,52 @@ def mock_popen(cmd):
)
self.assertEqual(mac, 0x1234567890ab)

def check_node(self, node, requires=None, network=False):
def check_node(self, node, requires=None):
if requires and node is None:
self.skipTest('requires ' + requires)
hex = '%012x' % node
if test_support.verbose >= 2:
print hex + ' ',
if network:
# 47 bit will never be set in IEEE 802 addresses obtained
# from network cards.
self.assertFalse(node & 0x010000000000, hex)
self.assertTrue(0 < node < (1L << 48),
"%s is not an RFC 4122 node ID" % hex)

@unittest.skipUnless(os.name == 'posix', 'requires Posix')
def test_ifconfig_getnode(self):
node = uuid._ifconfig_getnode()
self.check_node(node, 'ifconfig', True)
self.check_node(node, 'ifconfig')

@unittest.skipUnless(os.name == 'posix', 'requires Posix')
def test_arp_getnode(self):
node = uuid._arp_getnode()
self.check_node(node, 'arp', True)
self.check_node(node, 'arp')

@unittest.skipUnless(os.name == 'posix', 'requires Posix')
def test_lanscan_getnode(self):
node = uuid._lanscan_getnode()
self.check_node(node, 'lanscan', True)
self.check_node(node, 'lanscan')

@unittest.skipUnless(os.name == 'posix', 'requires Posix')
def test_netstat_getnode(self):
node = uuid._netstat_getnode()
self.check_node(node, 'netstat', True)
self.check_node(node, 'netstat')

@unittest.skipUnless(os.name == 'nt', 'requires Windows')
def test_ipconfig_getnode(self):
node = uuid._ipconfig_getnode()
self.check_node(node, 'ipconfig', True)
self.check_node(node, 'ipconfig')

@unittest.skipUnless(importable('win32wnet'), 'requires win32wnet')
@unittest.skipUnless(importable('netbios'), 'requires netbios')
def test_netbios_getnode(self):
node = uuid._netbios_getnode()
self.check_node(node, network=True)
self.check_node(node)

def test_random_getnode(self):
node = uuid._random_getnode()
# Least significant bit of first octet must be set.
self.assertTrue(node & 0x010000000000, '%012x' % node)
# The multicast bit, i.e. the least significant bit of first octet,
# must be set for randomly generated MAC addresses. See RFC 4122,
# $4.1.6.
self.assertTrue(node & (1 << 40), '%012x' % node)
self.check_node(node)

@unittest.skipUnless(os.name == 'posix', 'requires Posix')
Expand Down