Lib.test.test_bytes_jy.py Maven / Gradle / Ivy
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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.
# 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 SimpleOperationsTest(unittest.TestCase):
# Things the CPython library did not test throughly enough
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 (bytearray,): # (bytes, bytearray):
obj = B(obj)
realresult = getattr(obj, methodname)()
grumble = "%r.%s() returned %s" % (obj, methodname, realresult)
self.assertIs(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 Python (not Java)
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')
def test_main():
test.test_support.run_unittest(
ByteArraySubclassTest,
SimpleOperationsTest,
)
if __name__ == "__main__":
test_main()