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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.
import unittest
import sys
import _ast
from test import test_support
import textwrap
class TestSpecifics(unittest.TestCase):
def test_debug_assignment(self):
# catch assignments to __debug__
self.assertRaises(SyntaxError, compile, '__debug__ = 1', '?', 'single')
import __builtin__
prev = __builtin__.__debug__
setattr(__builtin__, '__debug__', 'sure')
setattr(__builtin__, '__debug__', prev)
def test_argument_handling(self):
# detect duplicate positional and keyword arguments
self.assertRaises(SyntaxError, eval, 'lambda a,a:0')
self.assertRaises(SyntaxError, eval, 'lambda a,a=1:0')
self.assertRaises(SyntaxError, eval, 'lambda a=1,a=1:0')
try:
exec 'def f(a, a): pass'
self.fail("duplicate arguments")
except SyntaxError:
pass
try:
exec 'def f(a = 0, a = 1): pass'
self.fail("duplicate keyword arguments")
except SyntaxError:
pass
try:
exec 'def f(a): global a; a = 1'
self.fail("variable is global and local")
except SyntaxError:
pass
def test_syntax_error(self):
self.assertRaises(SyntaxError, compile, "1+*3", "filename", "exec")
def test_none_keyword_arg(self):
self.assertRaises(SyntaxError, compile, "f(None=1)", "", "exec")
def test_duplicate_global_local(self):
try:
exec 'def f(a): global a; a = 1'
self.fail("variable is global and local")
except SyntaxError:
pass
def test_exec_with_general_mapping_for_locals(self):
class M:
"Test mapping interface versus possible calls from eval()."
def __getitem__(self, key):
if key == 'a':
return 12
raise KeyError
def __setitem__(self, key, value):
self.results = (key, value)
def keys(self):
return list('xyz')
m = M()
g = globals()
exec 'z = a' in g, m
self.assertEqual(m.results, ('z', 12))
try:
exec 'z = b' in g, m
except NameError:
pass
else:
self.fail('Did not detect a KeyError')
exec 'z = dir()' in g, m
self.assertEqual(m.results, ('z', list('xyz')))
exec 'z = globals()' in g, m
self.assertEqual(m.results, ('z', g))
exec 'z = locals()' in g, m
self.assertEqual(m.results, ('z', m))
try:
exec 'z = b' in m
except TypeError:
pass
#XXX: Jython calls this a NameError
except NameError:
pass
else:
self.fail('Did not validate globals as a real dict')
class A:
"Non-mapping"
pass
m = A()
try:
exec 'z = a' in g, m
except TypeError:
pass
#XXX: Jython calls this an AttributeError
except AttributeError:
pass
else:
self.fail('Did not validate locals as a mapping')
# Verify that dict subclasses work as well
class D(dict):
def __getitem__(self, key):
if key == 'a':
return 12
return dict.__getitem__(self, key)
d = D()
exec 'z = a' in g, d
self.assertEqual(d['z'], 12)
def test_extended_arg(self):
longexpr = 'x = x or ' + '-x' * 2500
code = '''
def f(x):
%s
%s
%s
%s
%s
%s
%s
%s
%s
%s
# the expressions above have no effect, x == argument
while x:
x -= 1
# EXTENDED_ARG/JUMP_ABSOLUTE here
return x
''' % ((longexpr,)*10)
#Exceeds 65535 byte limit on methods in the JVM.
if not test_support.is_jython:
exec code
self.assertEqual(f(5), 0)
def test_complex_args(self):
with test_support.check_py3k_warnings(
("tuple parameter unpacking has been removed", SyntaxWarning)):
exec textwrap.dedent('''
def comp_args((a, b)):
return a,b
self.assertEqual(comp_args((1, 2)), (1, 2))
def comp_args((a, b)=(3, 4)):
return a, b
self.assertEqual(comp_args((1, 2)), (1, 2))
self.assertEqual(comp_args(), (3, 4))
def comp_args(a, (b, c)):
return a, b, c
self.assertEqual(comp_args(1, (2, 3)), (1, 2, 3))
def comp_args(a=2, (b, c)=(3, 4)):
return a, b, c
self.assertEqual(comp_args(1, (2, 3)), (1, 2, 3))
self.assertEqual(comp_args(), (2, 3, 4))
''')
def test_argument_order(self):
try:
exec 'def f(a=1, (b, c)): pass'
self.fail("non-default args after default")
except SyntaxError:
pass
def test_float_literals(self):
# testing bad float literals
self.assertRaises(SyntaxError, eval, "2e")
self.assertRaises(SyntaxError, eval, "2.0e+")
self.assertRaises(SyntaxError, eval, "1e-")
self.assertRaises(SyntaxError, eval, "3-4e/21")
def test_indentation(self):
# testing compile() of indented block w/o trailing newline"
s = """
if 1:
if 2:
pass"""
compile(s, "", "exec")
# This test is probably specific to CPython and may not generalize
# to other implementations. We are trying to ensure that when
# the first line of code starts after 256, correct line numbers
# in tracebacks are still produced.
def test_leading_newlines(self):
if not test_support.is_jython:
s256 = "".join(["\n"] * 256 + ["spam"])
co = compile(s256, 'fn', 'exec')
self.assertEqual(co.co_firstlineno, 257)
self.assertEqual(co.co_lnotab, '')
def test_literals_with_leading_zeroes(self):
for arg in ["077787", "0xj", "0x.", "0e", "090000000000000",
"080000000000000", "000000000000009", "000000000000008",
"0b42", "0BADCAFE", "0o123456789", "0b1.1", "0o4.2",
"0b101j2", "0o153j2", "0b100e1", "0o777e1", "0o8", "0o78"]:
#FIXME: wrong error raised.
pass
#self.assertRaises(SyntaxError, eval, arg)
self.assertEqual(eval("0777"), 511)
self.assertEqual(eval("0777L"), 511)
self.assertEqual(eval("000777"), 511)
self.assertEqual(eval("0xff"), 255)
self.assertEqual(eval("0xffL"), 255)
self.assertEqual(eval("0XfF"), 255)
self.assertEqual(eval("0777."), 777)
self.assertEqual(eval("0777.0"), 777)
self.assertEqual(eval("000000000000000000000000000000000000000000000000000777e0"), 777)
self.assertEqual(eval("0777e1"), 7770)
self.assertEqual(eval("0e0"), 0)
self.assertEqual(eval("0000E-012"), 0)
self.assertEqual(eval("09.5"), 9.5)
self.assertEqual(eval("0777j"), 777j)
self.assertEqual(eval("00j"), 0j)
self.assertEqual(eval("00.0"), 0)
self.assertEqual(eval("0e3"), 0)
self.assertEqual(eval("090000000000000."), 90000000000000.)
self.assertEqual(eval("090000000000000.0000000000000000000000"), 90000000000000.)
self.assertEqual(eval("090000000000000e0"), 90000000000000.)
self.assertEqual(eval("090000000000000e-0"), 90000000000000.)
self.assertEqual(eval("090000000000000j"), 90000000000000j)
self.assertEqual(eval("000000000000007"), 7)
self.assertEqual(eval("000000000000008."), 8.)
self.assertEqual(eval("000000000000009."), 9.)
self.assertEqual(eval("0b101010"), 42)
self.assertEqual(eval("-0b000000000010"), -2)
self.assertEqual(eval("0o777"), 511)
self.assertEqual(eval("-0o0000010"), -8)
self.assertEqual(eval("020000000000.0"), 20000000000.0)
self.assertEqual(eval("037777777777e0"), 37777777777.0)
self.assertEqual(eval("01000000000000000000000.0"),
1000000000000000000000.0)
def test_unary_minus(self):
# Verify treatment of unary minus on negative numbers SF bug #660455
if sys.maxint == 2147483647:
# 32-bit machine
all_one_bits = '0xffffffff'
self.assertEqual(eval(all_one_bits), 4294967295L)
self.assertEqual(eval("-" + all_one_bits), -4294967295L)
elif sys.maxint == 9223372036854775807:
# 64-bit machine
all_one_bits = '0xffffffffffffffff'
self.assertEqual(eval(all_one_bits), 18446744073709551615L)
self.assertEqual(eval("-" + all_one_bits), -18446744073709551615L)
else:
self.fail("How many bits *does* this machine have???")
# Verify treatment of contant folding on -(sys.maxint+1)
# i.e. -2147483648 on 32 bit platforms. Should return int, not long.
# XXX: I'd call this an implementation detail, but one that should be
# fairly easy and moderately worthwhile to implement. Still it is low
# on the list, so leaving it out of jython for now.
if not test_support.is_jython:
self.assertTrue(isinstance(eval("%s" % (-sys.maxint - 1)), int))
self.assertTrue(isinstance(eval("%s" % (-sys.maxint - 2)), long))
if sys.maxint == 9223372036854775807:
def test_32_63_bit_values(self):
a = +4294967296 # 1 << 32
b = -4294967296 # 1 << 32
c = +281474976710656 # 1 << 48
d = -281474976710656 # 1 << 48
e = +4611686018427387904 # 1 << 62
f = -4611686018427387904 # 1 << 62
g = +9223372036854775807 # 1 << 63 - 1
h = -9223372036854775807 # 1 << 63 - 1
for variable in self.test_32_63_bit_values.func_code.co_consts:
if variable is not None:
self.assertTrue(isinstance(variable, int))
def test_sequence_unpacking_error(self):
# Verify sequence packing/unpacking with "or". SF bug #757818
i,j = (1, -1) or (-1, 1)
self.assertEqual(i, 1)
self.assertEqual(j, -1)
def test_none_assignment(self):
stmts = [
'None = 0',
'None += 0',
#XXX: None is specifically allowed as a dotted name for Java
# integration purposes in Jython.
#'__builtins__.None = 0',
'def None(): pass',
'class None: pass',
'(a, None) = 0, 0',
'for None in range(10): pass',
'def f(None): pass',
]
for stmt in stmts:
stmt += "\n"
self.assertRaises(SyntaxError, compile, stmt, 'tmp', 'single')
self.assertRaises(SyntaxError, compile, stmt, 'tmp', 'exec')
def test_import(self):
succeed = [
'import sys',
'import os, sys',
'import os as bar',
'import os.path as bar',
'from __future__ import nested_scopes, generators',
'from __future__ import (nested_scopes,\ngenerators)',
'from __future__ import (nested_scopes,\ngenerators,)',
'from sys import stdin, stderr, stdout',
'from sys import (stdin, stderr,\nstdout)',
'from sys import (stdin, stderr,\nstdout,)',
'from sys import (stdin\n, stderr, stdout)',
'from sys import (stdin\n, stderr, stdout,)',
'from sys import stdin as si, stdout as so, stderr as se',
'from sys import (stdin as si, stdout as so, stderr as se)',
'from sys import (stdin as si, stdout as so, stderr as se,)',
]
fail = [
'import (os, sys)',
'import (os), (sys)',
'import ((os), (sys))',
'import (sys',
'import sys)',
'import (os,)',
'import os As bar',
'import os.path a bar',
'from sys import stdin As stdout',
'from sys import stdin a stdout',
'from (sys) import stdin',
'from __future__ import (nested_scopes',
'from __future__ import nested_scopes)',
'from __future__ import nested_scopes,\ngenerators',
'from sys import (stdin',
'from sys import stdin)',
'from sys import stdin, stdout,\nstderr',
'from sys import stdin si',
'from sys import stdin,'
'from sys import (*)',
'from sys import (stdin,, stdout, stderr)',
'from sys import (stdin, stdout),',
]
for stmt in succeed:
compile(stmt, 'tmp', 'exec')
for stmt in fail:
self.assertRaises(SyntaxError, compile, stmt, 'tmp', 'exec')
def test_for_distinct_code_objects(self):
# SF bug 1048870
def f():
f1 = lambda x=1: x
f2 = lambda x=2: x
return f1, f2
f1, f2 = f()
self.assertNotEqual(id(f1.func_code), id(f2.func_code))
def test_unicode_encoding(self):
code = u"# -*- coding: utf-8 -*-\npass\n"
self.assertRaises(SyntaxError, compile, code, "tmp", "exec")
def test_subscripts(self):
# SF bug 1448804
# Class to make testing subscript results easy
class str_map(object):
def __init__(self):
self.data = {}
def __getitem__(self, key):
return self.data[str(key)]
def __setitem__(self, key, value):
self.data[str(key)] = value
def __delitem__(self, key):
del self.data[str(key)]
def __contains__(self, key):
return str(key) in self.data
d = str_map()
# Index
d[1] = 1
self.assertEqual(d[1], 1)
d[1] += 1
self.assertEqual(d[1], 2)
del d[1]
self.assertEqual(1 in d, False)
# Tuple of indices
d[1, 1] = 1
self.assertEqual(d[1, 1], 1)
d[1, 1] += 1
self.assertEqual(d[1, 1], 2)
del d[1, 1]
self.assertEqual((1, 1) in d, False)
# Simple slice
d[1:2] = 1
self.assertEqual(d[1:2], 1)
d[1:2] += 1
self.assertEqual(d[1:2], 2)
del d[1:2]
self.assertEqual(slice(1, 2) in d, False)
# Tuple of simple slices
d[1:2, 1:2] = 1
self.assertEqual(d[1:2, 1:2], 1)
d[1:2, 1:2] += 1
self.assertEqual(d[1:2, 1:2], 2)
del d[1:2, 1:2]
self.assertEqual((slice(1, 2), slice(1, 2)) in d, False)
# Extended slice
d[1:2:3] = 1
self.assertEqual(d[1:2:3], 1)
d[1:2:3] += 1
self.assertEqual(d[1:2:3], 2)
del d[1:2:3]
self.assertEqual(slice(1, 2, 3) in d, False)
# Tuple of extended slices
d[1:2:3, 1:2:3] = 1
self.assertEqual(d[1:2:3, 1:2:3], 1)
d[1:2:3, 1:2:3] += 1
self.assertEqual(d[1:2:3, 1:2:3], 2)
del d[1:2:3, 1:2:3]
self.assertEqual((slice(1, 2, 3), slice(1, 2, 3)) in d, False)
# Ellipsis
d[...] = 1
self.assertEqual(d[...], 1)
d[...] += 1
self.assertEqual(d[...], 2)
del d[...]
self.assertEqual(Ellipsis in d, False)
# Tuple of Ellipses
d[..., ...] = 1
self.assertEqual(d[..., ...], 1)
d[..., ...] += 1
self.assertEqual(d[..., ...], 2)
del d[..., ...]
self.assertEqual((Ellipsis, Ellipsis) in d, False)
def test_mangling(self):
class A:
def f():
__mangled = 1
__not_mangled__ = 2
import __mangled_mod
import __package__.module
#FIXME: not working in Jython, should it?:
#self.assert_("_A__mangled" in A.f.func_code.co_varnames)
#self.assert_("__not_mangled__" in A.f.func_code.co_varnames)
#self.assert_("_A__mangled_mod" in A.f.func_code.co_varnames)
self.assert_("__package__" in A.f.func_code.co_varnames)
def test_compile_ast(self):
fname = __file__
if fname.lower().endswith(('pyc', 'pyo')):
fname = fname[:-1]
with open(fname, 'r') as f:
fcontents = f.read()
sample_code = [
['', 'x = 5'],
['', 'print 1'],
['', 'print v'],
['', 'print True'],
['', 'print []'],
['', """if True:\n pass\n"""],
['', """for n in [1, 2, 3]:\n print n\n"""],
['', """def foo():\n pass\nfoo()\n"""],
#FIXME: Next one not working in Jython:
#[fname, fcontents],
]
for fname, code in sample_code:
co1 = compile(code, '%s1' % fname, 'exec')
ast = compile(code, '%s2' % fname, 'exec', _ast.PyCF_ONLY_AST)
self.assert_(type(ast) == _ast.Module)
co2 = compile(ast, '%s3' % fname, 'exec')
if not test_support.is_jython:
self.assertEqual(co1, co2)
# the code object's filename comes from the second compilation step
self.assertEqual(co2.co_filename, '%s3' % fname)
# raise exception when node type doesn't match with compile mode
co1 = compile('print 1', '', 'exec', _ast.PyCF_ONLY_AST)
#FIXME: raises wrong error in Jython.
#self.assertRaises(TypeError, compile, co1, '', 'eval')
# raise exception when node type is no start node
self.assertRaises(TypeError, compile, _ast.If(), '', 'exec')
# raise exception when node has invalid children
ast = _ast.Module()
ast.body = [_ast.BoolOp()]
#FIXME: raises NPE in Jython.
#self.assertRaises(TypeError, compile, ast, '', 'exec')
def test_main():
test_support.run_unittest(TestSpecifics)
if __name__ == "__main__":
test_main()