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446 lines
14 KiB
Python
446 lines
14 KiB
Python
"""Unit tests for the bytes type."""
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import os
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import re
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import sys
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import tempfile
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import unittest
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import test.test_support
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class BytesTest(unittest.TestCase):
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def test_basics(self):
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b = bytes()
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self.assertEqual(type(b), bytes)
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self.assertEqual(b.__class__, bytes)
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def test_empty_sequence(self):
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b = bytes()
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self.assertEqual(len(b), 0)
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self.assertRaises(IndexError, lambda: b[0])
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self.assertRaises(IndexError, lambda: b[1])
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self.assertRaises(IndexError, lambda: b[sys.maxint])
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self.assertRaises(IndexError, lambda: b[sys.maxint+1])
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self.assertRaises(IndexError, lambda: b[10**100])
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self.assertRaises(IndexError, lambda: b[-1])
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self.assertRaises(IndexError, lambda: b[-2])
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self.assertRaises(IndexError, lambda: b[-sys.maxint])
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self.assertRaises(IndexError, lambda: b[-sys.maxint-1])
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self.assertRaises(IndexError, lambda: b[-sys.maxint-2])
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self.assertRaises(IndexError, lambda: b[-10**100])
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def test_from_list(self):
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ints = list(range(256))
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b = bytes(i for i in ints)
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self.assertEqual(len(b), 256)
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self.assertEqual(list(b), ints)
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def test_from_index(self):
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class C:
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def __init__(self, i=0):
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self.i = i
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def __index__(self):
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return self.i
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b = bytes([C(), C(1), C(254), C(255)])
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self.assertEqual(list(b), [0, 1, 254, 255])
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self.assertRaises(ValueError, bytes, [C(-1)])
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self.assertRaises(ValueError, bytes, [C(256)])
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def test_constructor_type_errors(self):
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self.assertRaises(TypeError, bytes, 0.0)
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class C:
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pass
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self.assertRaises(TypeError, bytes, ["0"])
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self.assertRaises(TypeError, bytes, [0.0])
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self.assertRaises(TypeError, bytes, [None])
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self.assertRaises(TypeError, bytes, [C()])
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def test_constructor_value_errors(self):
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self.assertRaises(ValueError, bytes, [-1])
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self.assertRaises(ValueError, bytes, [-sys.maxint])
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self.assertRaises(ValueError, bytes, [-sys.maxint-1])
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self.assertRaises(ValueError, bytes, [-sys.maxint-2])
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self.assertRaises(ValueError, bytes, [-10**100])
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self.assertRaises(ValueError, bytes, [256])
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self.assertRaises(ValueError, bytes, [257])
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self.assertRaises(ValueError, bytes, [sys.maxint])
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self.assertRaises(ValueError, bytes, [sys.maxint+1])
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self.assertRaises(ValueError, bytes, [10**100])
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def test_repr(self):
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self.assertEqual(repr(bytes()), "bytes()")
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self.assertEqual(repr(bytes([0])), "bytes([0x00])")
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self.assertEqual(repr(bytes([0, 1, 254, 255])), "bytes([0x00, 0x01, 0xfe, 0xff])")
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def test_compare(self):
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b1 = bytes([1, 2, 3])
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b2 = bytes([1, 2, 3])
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b3 = bytes([1, 3])
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self.failUnless(b1 == b2)
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self.failUnless(b2 != b3)
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self.failUnless(b1 <= b2)
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self.failUnless(b1 <= b3)
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self.failUnless(b1 < b3)
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self.failUnless(b1 >= b2)
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self.failUnless(b3 >= b2)
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self.failUnless(b3 > b2)
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self.failIf(b1 != b2)
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self.failIf(b2 == b3)
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self.failIf(b1 > b2)
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self.failIf(b1 > b3)
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self.failIf(b1 >= b3)
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self.failIf(b1 < b2)
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self.failIf(b3 < b2)
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self.failIf(b3 <= b2)
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def test_nohash(self):
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self.assertRaises(TypeError, hash, bytes())
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def test_doc(self):
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self.failUnless(bytes.__doc__ != None)
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self.failUnless(bytes.__doc__.startswith("bytes("))
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def test_buffer_api(self):
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short_sample = "Hello world\n"
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sample = short_sample + "x"*(20 - len(short_sample))
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tfn = tempfile.mktemp()
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try:
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# Prepare
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with open(tfn, "wb") as f:
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f.write(short_sample)
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# Test readinto
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with open(tfn, "rb") as f:
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b = bytes([ord('x')]*20)
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n = f.readinto(b)
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self.assertEqual(n, len(short_sample))
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self.assertEqual(list(b), map(ord, sample))
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# Test writing in binary mode
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with open(tfn, "wb") as f:
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f.write(b)
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with open(tfn, "rb") as f:
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self.assertEqual(f.read(), sample)
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# Test writing in text mode
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with open(tfn, "w") as f:
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f.write(b)
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with open(tfn, "r") as f:
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self.assertEqual(f.read(), sample)
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# Can't use readinto in text mode
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with open(tfn, "r") as f:
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self.assertRaises(TypeError, f.readinto, b)
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finally:
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try:
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os.remove(tfn)
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except os.error:
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pass
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def test_reversed(self):
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input = map(ord, "Hello")
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b = bytes(input)
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output = list(reversed(b))
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input.reverse()
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self.assertEqual(output, input)
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def test_getslice(self):
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def by(s):
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return bytes(map(ord, s))
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b = by("Hello, world")
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self.assertEqual(b[:5], by("Hello"))
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self.assertEqual(b[1:5], by("ello"))
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self.assertEqual(b[5:7], by(", "))
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self.assertEqual(b[7:], by("world"))
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self.assertEqual(b[7:12], by("world"))
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self.assertEqual(b[7:100], by("world"))
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self.assertEqual(b[:-7], by("Hello"))
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self.assertEqual(b[-11:-7], by("ello"))
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self.assertEqual(b[-7:-5], by(", "))
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self.assertEqual(b[-5:], by("world"))
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self.assertEqual(b[-5:12], by("world"))
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self.assertEqual(b[-5:100], by("world"))
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self.assertEqual(b[-100:5], by("Hello"))
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def test_extended_getslice(self):
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# Test extended slicing by comparing with list slicing.
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L = list(range(255))
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b = bytes(L)
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indices = (0, None, 1, 3, 19, 100, -1, -2, -31, -100)
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for start in indices:
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for stop in indices:
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# Skip step 0 (invalid)
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for step in indices[1:]:
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self.assertEqual(b[start:stop:step], bytes(L[start:stop:step]))
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def test_regexps(self):
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def by(s):
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return bytes(map(ord, s))
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b = by("Hello, world")
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self.assertEqual(re.findall(r"\w+", b), [by("Hello"), by("world")])
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def test_setitem(self):
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b = bytes([1, 2, 3])
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b[1] = 100
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self.assertEqual(b, bytes([1, 100, 3]))
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b[-1] = 200
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self.assertEqual(b, bytes([1, 100, 200]))
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class C:
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def __init__(self, i=0):
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self.i = i
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def __index__(self):
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return self.i
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b[0] = C(10)
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self.assertEqual(b, bytes([10, 100, 200]))
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try:
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b[3] = 0
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self.fail("Didn't raise IndexError")
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except IndexError:
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pass
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try:
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b[-10] = 0
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self.fail("Didn't raise IndexError")
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except IndexError:
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pass
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try:
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b[0] = 256
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self.fail("Didn't raise ValueError")
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except ValueError:
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pass
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try:
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b[0] = C(-1)
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self.fail("Didn't raise ValueError")
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except ValueError:
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pass
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try:
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b[0] = None
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self.fail("Didn't raise TypeError")
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except TypeError:
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pass
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def test_delitem(self):
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b = bytes(range(10))
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del b[0]
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self.assertEqual(b, bytes(range(1, 10)))
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del b[-1]
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self.assertEqual(b, bytes(range(1, 9)))
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del b[4]
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self.assertEqual(b, bytes([1, 2, 3, 4, 6, 7, 8]))
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def test_setslice(self):
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b = bytes(range(10))
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self.assertEqual(list(b), list(range(10)))
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b[0:5] = bytes([1, 1, 1, 1, 1])
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self.assertEqual(b, bytes([1, 1, 1, 1, 1, 5, 6, 7, 8, 9]))
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del b[0:-5]
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self.assertEqual(b, bytes([5, 6, 7, 8, 9]))
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b[0:0] = bytes([0, 1, 2, 3, 4])
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self.assertEqual(b, bytes(range(10)))
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b[-7:-3] = bytes([100, 101])
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self.assertEqual(b, bytes([0, 1, 2, 100, 101, 7, 8, 9]))
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b[3:5] = [3, 4, 5, 6]
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self.assertEqual(b, bytes(range(10)))
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b[3:0] = [42, 42, 42]
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self.assertEqual(b, bytes([0, 1, 2, 42, 42, 42, 3, 4, 5, 6, 7, 8, 9]))
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def test_extended_set_del_slice(self):
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indices = (0, None, 1, 3, 19, 300, -1, -2, -31, -300)
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for start in indices:
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for stop in indices:
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# Skip invalid step 0
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for step in indices[1:]:
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L = list(range(255))
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b = bytes(L)
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# Make sure we have a slice of exactly the right length,
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# but with different data.
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data = L[start:stop:step]
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data.reverse()
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L[start:stop:step] = data
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b[start:stop:step] = data
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self.assertEquals(b, bytes(L))
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del L[start:stop:step]
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del b[start:stop:step]
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self.assertEquals(b, bytes(L))
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def test_setslice_trap(self):
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# This test verifies that we correctly handle assigning self
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# to a slice of self (the old Lambert Meertens trap).
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b = bytes(range(256))
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b[8:] = b
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self.assertEqual(b, bytes(list(range(8)) + list(range(256))))
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def test_encoding(self):
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sample = u"Hello world\n\u1234\u5678\u9abc\udef0"
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for enc in ("utf8", "utf16"):
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b = bytes(sample, enc)
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self.assertEqual(b, bytes(map(ord, sample.encode(enc))))
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self.assertRaises(UnicodeEncodeError, bytes, sample, "latin1")
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b = bytes(sample, "latin1", "ignore")
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self.assertEqual(b, bytes(sample[:-4]))
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def test_decode(self):
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sample = u"Hello world\n\u1234\u5678\u9abc\def0\def0"
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for enc in ("utf8", "utf16"):
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b = bytes(sample, enc)
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self.assertEqual(b.decode(enc), sample)
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sample = u"Hello world\n\x80\x81\xfe\xff"
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b = bytes(sample, "latin1")
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self.assertRaises(UnicodeDecodeError, b.decode, "utf8")
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self.assertEqual(b.decode("utf8", "ignore"), "Hello world\n")
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def test_from_buffer(self):
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sample = "Hello world\n\x80\x81\xfe\xff"
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buf = buffer(sample)
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b = bytes(buf)
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self.assertEqual(b, bytes(map(ord, sample)))
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def test_to_str(self):
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sample = "Hello world\n\x80\x81\xfe\xff"
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b = bytes(sample)
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self.assertEqual(str(b), sample)
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def test_from_int(self):
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b = bytes(0)
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self.assertEqual(b, bytes())
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b = bytes(10)
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self.assertEqual(b, bytes([0]*10))
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b = bytes(10000)
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self.assertEqual(b, bytes([0]*10000))
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def test_concat(self):
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b1 = bytes("abc")
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b2 = bytes("def")
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self.assertEqual(b1 + b2, bytes("abcdef"))
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self.assertRaises(TypeError, lambda: b1 + "def")
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self.assertRaises(TypeError, lambda: "abc" + b2)
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def test_repeat(self):
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b = bytes("abc")
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self.assertEqual(b * 3, bytes("abcabcabc"))
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self.assertEqual(b * 0, bytes())
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self.assertEqual(b * -1, bytes())
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self.assertRaises(TypeError, lambda: b * 3.14)
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self.assertRaises(TypeError, lambda: 3.14 * b)
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self.assertRaises(MemoryError, lambda: b * sys.maxint)
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def test_repeat_1char(self):
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self.assertEqual(bytes('x')*100, bytes('x'*100))
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def test_iconcat(self):
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b = bytes("abc")
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b1 = b
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b += bytes("def")
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self.assertEqual(b, bytes("abcdef"))
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self.assertEqual(b, b1)
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self.failUnless(b is b1)
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def test_irepeat(self):
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b = bytes("abc")
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b1 = b
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b *= 3
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self.assertEqual(b, bytes("abcabcabc"))
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self.assertEqual(b, b1)
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self.failUnless(b is b1)
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def test_irepeat_1char(self):
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b = bytes("x")
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b1 = b
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b *= 100
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self.assertEqual(b, bytes("x"*100))
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self.assertEqual(b, b1)
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self.failUnless(b is b1)
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def test_contains(self):
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b = bytes("abc")
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self.failUnless(ord('a') in b)
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self.failUnless(long(ord('a')) in b)
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self.failIf(200 in b)
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self.failIf(200L in b)
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self.assertRaises(ValueError, lambda: 300 in b)
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self.assertRaises(ValueError, lambda: -1 in b)
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self.assertRaises(TypeError, lambda: None in b)
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self.assertRaises(TypeError, lambda: float(ord('a')) in b)
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self.assertRaises(TypeError, lambda: "a" in b)
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self.failUnless(bytes("") in b)
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self.failUnless(bytes("a") in b)
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self.failUnless(bytes("b") in b)
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self.failUnless(bytes("c") in b)
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self.failUnless(bytes("ab") in b)
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self.failUnless(bytes("bc") in b)
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self.failUnless(bytes("abc") in b)
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self.failIf(bytes("ac") in b)
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self.failIf(bytes("d") in b)
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self.failIf(bytes("dab") in b)
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self.failIf(bytes("abd") in b)
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def test_alloc(self):
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b = bytes()
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alloc = b.__alloc__()
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self.assert_(alloc >= 0)
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seq = [alloc]
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for i in range(100):
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b += bytes("x")
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alloc = b.__alloc__()
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self.assert_(alloc >= len(b))
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if alloc not in seq:
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seq.append(alloc)
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#print seq
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def test_join(self):
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self.assertEqual(bytes.join([]), bytes())
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self.assertEqual(bytes.join([bytes()]), bytes())
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for part in [("abc",), ("a", "bc"), ("ab", "c"), ("a", "b", "c")]:
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lst = map(bytes, part)
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self.assertEqual(bytes.join(lst), bytes("abc"))
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self.assertEqual(bytes.join(tuple(lst)), bytes("abc"))
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self.assertEqual(bytes.join(iter(lst)), bytes("abc"))
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# XXX more...
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# Optimizations:
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# __iter__? (optimization)
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# __reversed__? (optimization)
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# XXX Some list methods?
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# extended slicing
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# extended slice assignment
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# extend (same as b[len(b):] = src)
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# reverse (in-place)
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# remove
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# pop
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# NOT sort!
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# With int arg:
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# index
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# count
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# append
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# insert
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# XXX Some string methods? (Those that don't use character properties)
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# startswith
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# endswidth
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# find, rfind
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# index, rindex (bytes arg)
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# join
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# replace
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# translate
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# split, rsplit
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# lstrip, rstrip, strip??
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# XXX pickle and marshal support?
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def test_main():
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test.test_support.run_unittest(BytesTest)
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if __name__ == "__main__":
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test_main()
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##unittest.main()
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