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"""Unit tests for the bytes type."""
import sys
import unittest
import test.test_support
class BytesTest(unittest.TestCase):
def test_basics(self):
b = bytes()
self.assertEqual(type(b), bytes)
self.assertEqual(b.__class__, bytes)
def test_empty_sequence(self):
b = bytes()
self.assertEqual(len(b), 0)
self.assertRaises(IndexError, lambda: b[0])
self.assertRaises(IndexError, lambda: b[1])
self.assertRaises(IndexError, lambda: b[sys.maxint])
self.assertRaises(IndexError, lambda: b[sys.maxint+1])
self.assertRaises(IndexError, lambda: b[10**100])
self.assertRaises(IndexError, lambda: b[-1])
self.assertRaises(IndexError, lambda: b[-2])
self.assertRaises(IndexError, lambda: b[-sys.maxint])
self.assertRaises(IndexError, lambda: b[-sys.maxint-1])
self.assertRaises(IndexError, lambda: b[-sys.maxint-2])
self.assertRaises(IndexError, lambda: b[-10**100])
def test_from_list(self):
ints = list(range(256))
b = bytes(i for i in ints)
self.assertEqual(len(b), 256)
self.assertEqual(list(b), ints)
def test_from_index(self):
class C:
def __init__(self, i=0):
self.i = i
def __index__(self):
return self.i
b = bytes([C(), C(1), C(254), C(255)])
self.assertEqual(list(b), [0, 1, 254, 255])
self.assertRaises(ValueError, bytes, [C(-1)])
self.assertRaises(ValueError, bytes, [C(256)])
def test_constructor_type_errors(self):
self.assertRaises(TypeError, bytes, 0)
class C:
pass
self.assertRaises(TypeError, bytes, ["0"])
self.assertRaises(TypeError, bytes, [0.0])
self.assertRaises(TypeError, bytes, [None])
self.assertRaises(TypeError, bytes, [C()])
def test_constructor_value_errors(self):
self.assertRaises(ValueError, bytes, [-1])
self.assertRaises(ValueError, bytes, [-sys.maxint])
self.assertRaises(ValueError, bytes, [-sys.maxint-1])
self.assertRaises(ValueError, bytes, [-sys.maxint-2])
self.assertRaises(ValueError, bytes, [-10**100])
self.assertRaises(ValueError, bytes, [256])
self.assertRaises(ValueError, bytes, [257])
self.assertRaises(ValueError, bytes, [sys.maxint])
self.assertRaises(ValueError, bytes, [sys.maxint+1])
self.assertRaises(ValueError, bytes, [10**100])
def test_repr(self):
self.assertEqual(repr(bytes()), "bytes()")
self.assertEqual(repr(bytes([0])), "bytes([0x00])")
self.assertEqual(repr(bytes([0, 1, 254, 255])), "bytes([0x00, 0x01, 0xfe, 0xff])")
def test_compare(self):
b1 = bytes([1, 2, 3])
b2 = bytes([1, 2, 3])
b3 = bytes([1, 3])
self.failUnless(b1 == b2)
self.failUnless(b2 != b3)
self.failUnless(b1 <= b2)
self.failUnless(b1 <= b3)
self.failUnless(b1 < b3)
self.failUnless(b1 >= b2)
self.failUnless(b3 >= b2)
self.failUnless(b3 > b2)
self.failIf(b1 != b2)
self.failIf(b2 == b3)
self.failIf(b1 > b2)
self.failIf(b1 > b3)
self.failIf(b1 >= b3)
self.failIf(b1 < b2)
self.failIf(b3 < b2)
self.failIf(b3 <= b2)
def test_nohash(self):
self.assertRaises(TypeError, hash, bytes())
def test_doc(self):
self.failUnless(bytes.__doc__ != None)
self.failUnless(bytes.__doc__.startswith("bytes("))
# XXX More stuff to test and build (TDD):
# constructor from str: bytes(<str>) == bytes(map(ord, <str>))?
# encoding constructor: bytes(<unicode>[, <encoding>[, <errors>]])
# default encoding Latin-1? (Matching ord)
# slicing
# extended slicing?
# item assignment
# slice assignment
# extended slice assignment?
# __contains__ with simple int arg
# __contains__ with another bytes arg?
# find/index? (int or bytes arg?)
# count? (int arg)
# concatenation (+)
# repeat?
# extend?
# append?
# insert?
# pop?
# __reversed__?
# reverse? (inplace)
# NOT sort!
# __iter__? (optimization)
# __str__? (could return "".join(map(chr, self))
# decode
# buffer API
# check that regexp searches work
# (I suppose re.sub() returns a string)
# file.readinto
# file.write
def test_main():
test.test_support.run_unittest(BytesTest)
if __name__ == "__main__":
##test_main()
unittest.main()
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