Lib.test.test_bytes_jy.py Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of jython Show documentation
Show all versions of jython Show documentation
Jython is an implementation of the high-level, dynamic, object-oriented
language Python written in 100% Pure Java, and seamlessly integrated with
the Java platform. It thus allows you to run Python on any Java platform.
# -*- coding: utf-8 -*-
#
# Tests against problems we have seen in Jython's implementation of
# buffer, bytes, bytearray, and memoryview to prevent possible
# regression as well as integration with Java.
import unittest
import test.test_support
class ByteArraySubclassTest(unittest.TestCase):
def test_len(self):
class Sub(bytearray): pass
s = Sub("abc123")
self.assertEqual(len(s), 6)
class BytesOperationsTest(unittest.TestCase):
# Tests additional to the CPython library, on bytes/str
def test_irepeat(self) :
def check_irepeat(a, n) :
# Check in-place multiplication (repeats)
b = bytearray(a)
b *= n
self.assertEquals(b, bytearray(a*n))
def irepeat_export(a, n) :
# In-place multiplication with export mostly raises BufferError
b = bytearray(a)
with memoryview(b) as m:
b *= n
# If it doesn't raise, it gets the right answer
self.assertEquals(b, bytearray(a*n))
for a in [b'', b'a', b'hello'] :
check_irepeat(a, 7)
check_irepeat(a, 1)
check_irepeat(a, 0)
check_irepeat(a, -1) # -ve treated as 0
# Resizing with exports should raise an exception
self.assertRaises(BufferError, irepeat_export, b'a', 5)
self.assertRaises(BufferError, irepeat_export, b'hello', 3)
self.assertRaises(BufferError, irepeat_export, b'hello', 0)
self.assertRaises(BufferError, irepeat_export, b'hello', -1)
# These don't raise an exception (CPython 2.7.6, 3.4.1)
irepeat_export(b'a', 1)
irepeat_export(b'hello', 1)
for n in range(-1, 3) :
irepeat_export(b'', n)
# The following test_is* tests supplement string_tests for non-ascii examples.
# The principle is to choose some character codes that are letters, digits
# or spaces in Unicode but not in ASCII and check they are *not* categorised
# as such in a byte context.
def checkequal(self, expected, obj, methodname, *args):
"check that object.method() returns expected result"
for B in (bytes, bytearray):
obj = B(obj)
realresult = getattr(obj, methodname)()
grumble = "%r.%s() returned %r" % (obj, methodname, realresult)
self.assertEqual(expected, realresult, grumble)
# print grumble, 'x' if realresult != expected else '.'
LOWER = b'\xe0\xe7\xe9\xff' # Uppercase in Latin-1 but not ascii
UPPER = b'\xc0\xc7\xc9\xdd' # Lowercase in Latin-1 but not ascii
DIGIT = b'\xb9\xb2\xb3' # sup 1, 2, 3: numeric in Python (not Java)
SPACE = b'\x85\xa0' # NEXT LINE, NBSP: space in unicode (not in str/bytes)
def test_isalpha(self):
for c in self.UPPER + self.LOWER:
self.checkequal(False, c, 'isalpha')
self.checkequal(False, b'a' + c + b'Z', 'isalpha')
def test_isdigit(self):
for c in self.DIGIT:
self.checkequal(False, c, 'isdigit')
self.checkequal(False, b'1' + c + b'3', 'isdigit')
def test_islower(self):
for c in self.LOWER:
self.checkequal(False, c, 'islower')
for c in self.UPPER:
self.checkequal(True, b'a' + c + b'z', 'islower')
def test_isupper(self):
for c in self.UPPER:
self.checkequal(False, c, 'isupper')
for c in self.LOWER:
self.checkequal(True, b'A' + c + b'Z', 'isupper')
def test_isspace(self):
for c in self.SPACE:
self.checkequal(False, c, 'isspace')
self.checkequal(False, b'\t' + c + b' ', 'isspace')
def test_isalnum(self):
for c in self.UPPER + self.LOWER + self.DIGIT:
self.checkequal(False, c, 'isalnum')
self.checkequal(False, b'a' + c + b'3', 'isalnum')
def test_istitle(self):
for c in self.UPPER:
# c should be an un-cased character (effectively a space)
self.checkequal(False, c, 'istitle')
self.checkequal(True, b'A' + c + b'Titlecased Line', 'istitle')
self.checkequal(True, b'A' + c + b' Titlecased Line', 'istitle')
self.checkequal(True, b'A ' + c + b'Titlecased Line', 'istitle')
for c in self.LOWER:
# c should be an un-cased character (effectively a space)
self.checkequal(True, b'A' + c + b'Titlecased Line', 'istitle')
self.checkequal(True, b'A ' + c + b' Titlecased Line', 'istitle')
# The following case-twiddling tests supplement string_tests for
# non-ascii examples, using characters that are upper/lower-case
# in latin-1 but uncased in ascii.
def test_upper(self):
self.checkequal(b"WAS LOWER:" + self.LOWER,
b"was lower:" + self.LOWER, 'upper')
def test_lower(self):
self.checkequal(b"was upper:" + self.UPPER,
b"WAS UPPER:" + self.UPPER, 'lower')
def test_capitalize(self):
for c in self.LOWER:
self.checkequal(c + b"abcde",
c + b"AbCdE", 'capitalize')
def test_swapcase(self):
self.checkequal(b"WAS lower:" + self.LOWER,
b"was LOWER:" + self.LOWER, 'swapcase')
self.checkequal(b"was UPPER:" + self.UPPER,
b"WAS upper:" + self.UPPER, 'swapcase')
def test_title(self):
utitle = u"Le Dîner À Étretat"
title = utitle.encode('latin-1')
lower = utitle.lower().encode('latin-1')
upper = utitle.upper().encode('latin-1')
# Check we treat an accented character as un-cased (=space)
self.checkequal(u"Le DîNer à éTretat".encode('latin-1'),
lower, 'title')
self.checkequal(u"Le DÎNer À ÉTretat".encode('latin-1'),
upper, 'title')
self.checkequal(u"Le DîNer À ÉTretat".encode('latin-1'),
title, 'title')
# *strip() tests to supplement string_tests with non-ascii examples,
# using characters that are spaces in latin-1 but not in ascii.
def test_strip(self):
for c in self.SPACE:
# These should not be stripped at left or right because of c
sp = b" \t "
s = c + sp + b"hello" + sp + c
self.checkequal( s, s, 'strip')
self.checkequal( s, sp+s+sp, 'strip')
self.checkequal( sp+s, sp+s, 'rstrip')
self.checkequal( sp+s, sp+s+sp, 'rstrip')
self.checkequal( s+sp, s+sp, 'lstrip')
self.checkequal( s+sp, sp+s+sp, 'lstrip')
def test_split(self):
for c in self.SPACE:
# These should not be split at c
s = b"AAA" + c + b"BBB"
self.assertEqual(1, len(s.split()), "split made in " + repr(s))
self.assertEqual(1, len(s.rsplit()), "rsplit made in " + repr(s))
s = bytearray(s)
self.assertEqual(1, len(s.split()), "split made in " + repr(s))
self.assertEqual(1, len(s.rsplit()), "rsplit made in " + repr(s))
class BufferOperationsTest(unittest.TestCase):
# Tests additional to the CPython library, on buffer
def test_repr(self):
# Exact form of buffer.__repr__
text = u"Le dîner à Étretat".encode('latin-1')
buf = buffer(text)
expected = r""
self.assertRegexpMatches(repr(buf), expected)
self.assertRegexpMatches(buf.__repr__(), expected)
def test_str(self):
# Exact form of buffer.__str__
text = u"Le dîner à Étretat".encode('latin-1')
buf = buffer(text)
expected = text
self.assertEqual(str(buf), expected)
self.assertEqual(buf.__str__(), expected)
def test_add_memoryview(self):
b = buffer(b"abc")
# add memoryview
c = b + memoryview('xyz')
self.assertEqual(str(c), 'abcxyz')
def test_add_bytearray(self):
b = buffer(b"abc")
# add bytearray
b += bytearray('xyz')
self.assertEqual(str(b), 'abcxyz')
def test_iadd_memoryview(self):
b = buffer(b"abc")
# concatenate memoryview
b += memoryview('xyz')
self.assertEqual(str(b), 'abcxyz')
def test_iadd_bytearray(self):
b = buffer(b"abc")
# concatenate bytearray
b += bytearray('xyz')
self.assertEqual(str(b), 'abcxyz')
class ByteArrayTest(unittest.TestCase):
# Tests additional to the CPython library, on bytearray
def test_add_memoryview(self):
b = bytearray(b"abc")
# add memoryview
c = b + memoryview('xyz')
self.assertEqual(str(c), 'abcxyz')
def test_add_buffer(self):
b = bytearray(b"abc")
# add buffer
c = b + buffer('xyz')
self.assertEqual(str(c), 'abcxyz')
def test_iadd_memoryview(self):
b = bytearray(b"abc")
# concatenate memoryview
b += memoryview('xyz')
self.assertEqual(str(b), 'abcxyz')
def test_iadd_buffer(self):
b = bytearray(b"abc")
# concatenate buffer
b += buffer('xyz')
self.assertEqual(str(b), 'abcxyz')
def test_main():
test.test_support.run_unittest(
ByteArraySubclassTest,
BytesOperationsTest,
BufferOperationsTest,
ByteArrayTest
)
if __name__ == "__main__":
test_main()