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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, lambda: bytes([C(-1)]))
self.assertRaises(ValueError, lambda: bytes([C(256)]))
def test_constructor_type_errors(self):
class C:
pass
self.assertRaises(TypeError, lambda: bytes(["0"]))
self.assertRaises(TypeError, lambda: bytes([0.0]))
self.assertRaises(TypeError, lambda: bytes([None]))
self.assertRaises(TypeError, lambda: bytes([C()]))
def test_constructor_value_errors(self):
self.assertRaises(ValueError, lambda: bytes([-1]))
self.assertRaises(ValueError, lambda: bytes([-sys.maxint]))
self.assertRaises(ValueError, lambda: bytes([-sys.maxint-1]))
self.assertRaises(ValueError, lambda: bytes([-sys.maxint-2]))
self.assertRaises(ValueError, lambda: bytes([-10**100]))
self.assertRaises(ValueError, lambda: bytes([256]))
self.assertRaises(ValueError, lambda: bytes([257]))
self.assertRaises(ValueError, lambda: bytes([sys.maxint]))
self.assertRaises(ValueError, lambda: bytes([sys.maxint+1]))
self.assertRaises(ValueError, lambda: 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("))
def test_main():
test.test_support.run_unittest(XrangeTest)
if __name__ == "__main__":
##test_main()
unittest.main()
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