#
# I am too impatient to write really good tests here, unfortuntely.
import netblock
import unittest

class basicTests(unittest.TestCase):
	knownIPRStrs = (
		(None, "<IPRanges: >"),
		('127.0.0.1', "<IPRanges: 127.0.0.1>"),
		('127.0.0.10-127.0.0.20', "<IPRanges: 127.0.0.10-127.0.0.20>"),
		('127.0.0.0/24', "<IPRanges: 127.0.0.0-127.0.0.255>"),
		# /32 CIDR:
		('127.0.0.1/32', "<IPRanges: 127.0.0.1>"),
		# We should really laugh at this, but.
		('127/32', "<IPRanges: 127.0.0.0>"),
		# Runt IP addresses on CIDR ranges.
		('127/8', "<IPRanges: 127.0.0.0-127.255.255.255>"),
		# Everything.
		("0/0", "<IPRanges: 0.0.0.0-255.255.255.255>"),
		)
	def testStrResults(self):
		"Test the result of str() of IPRanges on known values."
		for i, res in self.knownIPRStrs:
			if i == None:
				r = netblock.IPRanges()
			else:
				r = netblock.IPRanges(i)
			self.assertEqual(str(r), res)
			# Further test the .remove and .add code.
			if i != None:
				self.assertEqual(r.len() > 0, 1)
				r.remove(i)
				self.assertEqual(r.len(), 0)
				r.add(i)
				self.assertEqual(str(r), res)

	# Note that this also tests iteration, and that iteration returns
	# a correctly formatted value.
	def testInOperator(self):
		"""Test the 'in' operator for IPRanges."""
		r = netblock.IPRanges('127/8')
		self.assertEqual('127.0.0.1' in r, 1)
		self.assertEqual('126.255.255.255' in r, 0)
		# Check that everything actually, you know, works.
		r = netblock.IPRanges('127.0.0.0/24')
		r.add("128.0.0.0/23")
		r.add("255.255.255.0/24")
		r.add("0.0.0.0/24")
		# Three /24s and a /23 are 256*5.
		self.assertEqual(len(r), 1280)
		c = 0
		for e in r:
			self.assertEqual(e in r, 1)
			# Now test the number version.
			en = netblock.strtoip(e)
			self.assertEqual(en in r, 1)
			c += 1
		# Make sure we actually enumerated everything.
		self.assertEqual(c, len(r))

	def testIterResult(self):
		"Test that iteration of a netblock results in IP addresses."
		r = netblock.IPRanges('127.0.0.0-127.0.0.2')
		self.assertEqual(tuple(r), ('127.0.0.0', '127.0.0.1',
					    '127.0.0.2'))

	knownCIDRValues = (
		('127/8', ['127.0.0.0/8',]),
		('0/0', ['0.0.0.0/0']),
		('127.0.0.0-127.0.0.127', ['127.0.0.0/25',]),
		('127.0.0.0-127.0.2.255', ['127.0.0.0/23', '127.0.2.0/24']),
		('127.0.1.0-127.0.3.255', ['127.0.1.0/24', '127.0.2.0/23']),
		('127.0.0.255-127.0.1.255', ['127.0.0.255', '127.0.1.0/24']),
		('0.0.0.127-0.0.1.130', ['0.0.0.127', '0.0.0.128/25',
					   '0.0.1.0/25', '0.0.1.128/31',
					   '0.0.1.130']),
		# We do not generate /32.
		('250.250.250.250', ['250.250.250.250']),
		# But we will generate /31.
		('0.0.0.0-0.0.0.1', ['0.0.0.0/31']),
		# Test the extreme cases of all ones and all zeros.
		('255.255.255.255', ['255.255.255.255']),
		('0.0.0.0', ['0.0.0.0']),
		# this straddles the signed-unsigned boundary if signed
		# things are in use.
		('127.255.255.255-128.0.0.0', ['127.255.255.255', '128.0.0.0']),
		('126.0.0.0-129.255.255.255', ['126.0.0.0/7', '128.0.0.0/7']),
		('126.0.0.0-129.0.0.255', ['126.0.0.0/7', '128.0.0.0/8', '129.0.0.0/24']),
		)
	def testCIDROutput(self):
		"Test IPRanges.tocidr for correct operation on basic input."
		for ival, res in self.knownCIDRValues:
			n = netblock.IPRanges(ival)
			self.assertEqual(n.tocidr(), res)
			# Do we get the same result if we feed the CIDRs
			# back in?
			n1 = netblock.IPRanges()
			for cidr in n.tocidr():
				n1.add(cidr)
			self.assertEqual(n1.tocidr(), res)

class failureTests(unittest.TestCase):
	knownBadInitArgs = (
		# Runt and perverse IP addresses.
		"127.0",
		"127.0./16",
		".127/16",
		".127/8",
		"127.0.0.0.5",
		"256.0.0.0",
		# long CIDR, short CIDR (well, 'short cidr' is a bit off,
		# but it will be parsed that way)
		"127.0.0.0/33",
		"127.0.0.0/-1",
		# CIDR that is not properly aligned.
		"127.0.0.1/24",
		# Ranges that are high-low, not vice versa.
		"127.0.100.0-127.0.0.0",
		# Ranges that are missing low or hi.
		"-127.0.0.0",
		"127.0.0.0-",
		)
	def testKnownInitFailures(self):
		"Test that IPRanges fails to initialize in known situations."
		for a in self.knownBadInitArgs:
			self.assertRaises(netblock.NBError, netblock.IPRanges, a)
			# Test that the same failure is raised on add.
			r = netblock.IPRanges()
			self.assertRaises(netblock.NBError, r.add, a)

	def testBadCIDRError(self):
		"Test that IPRanges properly indicates bogus CIDR errors."
		self.assertRaises(netblock.BadCIDRError, netblock.IPRanges,
				  "127.0.0.1/24")
					  
if __name__ == "__main__":
	unittest.main()