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from test.test_support import verbose, verify, TestFailed
import sys
import new
class Eggs:
def get_yolks(self):
return self.yolks
print 'new.module()'
m = new.module('Spam')
if verbose:
print m
m.Eggs = Eggs
sys.modules['Spam'] = m
import Spam
def get_more_yolks(self):
return self.yolks + 3
print 'new.classobj()'
C = new.classobj('Spam', (Spam.Eggs,), {'get_more_yolks': get_more_yolks})
if verbose:
print C
print 'new.instance()'
c = new.instance(C, {'yolks': 3})
if verbose:
print c
o = new.instance(C)
verify(o.__dict__ == {},
"new __dict__ should be empty")
del o
o = new.instance(C, None)
verify(o.__dict__ == {},
"new __dict__ should be empty")
del o
def break_yolks(self):
self.yolks = self.yolks - 2
print 'new.instancemethod()'
im = new.instancemethod(break_yolks, c, C)
if verbose:
print im
verify(c.get_yolks() == 3 and c.get_more_yolks() == 6,
'Broken call of hand-crafted class instance')
im()
verify(c.get_yolks() == 1 and c.get_more_yolks() == 4,
'Broken call of hand-crafted instance method')
im = new.instancemethod(break_yolks, c)
im()
verify(c.get_yolks() == -1)
try:
new.instancemethod(break_yolks, None)
except TypeError:
pass
else:
raise TestFailed, "dangerous instance method creation allowed"
# Verify that instancemethod() doesn't allow keyword args
try:
new.instancemethod(break_yolks, c, kw=1)
except TypeError:
pass
else:
raise TestFailed, "instancemethod shouldn't accept keyword args"
# It's unclear what the semantics should be for a code object compiled at
# module scope, but bound and run in a function. In CPython, `c' is global
# (by accident?) while in Jython, `c' is local. The intent of the test
# clearly is to make `c' global, so let's be explicit about it.
codestr = '''
global c
a = 1
b = 2
c = a + b
'''
ccode = compile(codestr, '<string>', 'exec')
# Jython doesn't have a __builtins__, so use a portable alternative
import __builtin__
g = {'c': 0, '__builtins__': __builtin__}
# this test could be more robust
print 'new.function()'
func = new.function(ccode, g)
if verbose:
print func
func()
verify(g['c'] == 3,
'Could not create a proper function object')
# test the various extended flavors of function.new
def f(x):
def g(y):
return x + y
return g
g = f(4)
new.function(f.func_code, {}, "blah")
g2 = new.function(g.func_code, {}, "blah", (2,), g.func_closure)
verify(g2() == 6)
g3 = new.function(g.func_code, {}, "blah", None, g.func_closure)
verify(g3(5) == 9)
def test_closure(func, closure, exc):
try:
new.function(func.func_code, {}, "", None, closure)
except exc:
pass
else:
print "corrupt closure accepted"
test_closure(g, None, TypeError) # invalid closure
test_closure(g, (1,), TypeError) # non-cell in closure
test_closure(g, (1, 1), ValueError) # closure is wrong size
test_closure(f, g.func_closure, ValueError) # no closure needed
print 'new.code()'
# bogus test of new.code()
if hasattr(new, 'code') and not sys.platform.startswith('java'):
def f(a): pass
c = f.func_code
argcount = c.co_argcount
nlocals = c.co_nlocals
stacksize = c.co_stacksize
flags = c.co_flags
codestring = c.co_code
constants = c.co_consts
names = c.co_names
varnames = c.co_varnames
filename = c.co_filename
name = c.co_name
firstlineno = c.co_firstlineno
lnotab = c.co_lnotab
freevars = c.co_freevars
cellvars = c.co_cellvars
d = new.code(argcount, nlocals, stacksize, flags, codestring,
constants, names, varnames, filename, name,
firstlineno, lnotab, freevars, cellvars)
# test backwards-compatibility version with no freevars or cellvars
d = new.code(argcount, nlocals, stacksize, flags, codestring,
constants, names, varnames, filename, name,
firstlineno, lnotab)
try: # this used to trigger a SystemError
d = new.code(-argcount, nlocals, stacksize, flags, codestring,
constants, names, varnames, filename, name,
firstlineno, lnotab)
except ValueError:
pass
else:
raise TestFailed, "negative co_argcount didn't trigger an exception"
try: # this used to trigger a SystemError
d = new.code(argcount, -nlocals, stacksize, flags, codestring,
constants, names, varnames, filename, name,
firstlineno, lnotab)
except ValueError:
pass
else:
raise TestFailed, "negative co_nlocals didn't trigger an exception"
try: # this used to trigger a Py_FatalError!
d = new.code(argcount, nlocals, stacksize, flags, codestring,
constants, (5,), varnames, filename, name,
firstlineno, lnotab)
except TypeError:
pass
else:
raise TestFailed, "non-string co_name didn't trigger an exception"
# new.code used to be a way to mutate a tuple...
class S(str): pass
t = (S("ab"),)
d = new.code(argcount, nlocals, stacksize, flags, codestring,
constants, t, varnames, filename, name,
firstlineno, lnotab)
verify(type(t[0]) is S, "eek, tuple changed under us!")
if verbose:
print d
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