Port test_new.py to unittest.
This commit is contained in:
Walter Dörwald
parent
d414302eec
commit
71cd55150b
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@ -1,7 +0,0 @@
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test_new
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new.module()
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new.classobj()
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new.instance()
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new.instancemethod()
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new.function()
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new.code()
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@ -1,183 +1,162 @@
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from test.test_support import verbose, verify, TestFailed
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import sys
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import new
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import unittest
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from test import test_support
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import sys, new
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class Eggs:
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def get_yolks(self):
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return self.yolks
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class NewTest(unittest.TestCase):
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def test_spam(self):
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class Eggs:
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def get_yolks(self):
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return self.yolks
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print 'new.module()'
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m = new.module('Spam')
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if verbose:
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print m
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m.Eggs = Eggs
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sys.modules['Spam'] = m
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import Spam
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m = new.module('Spam')
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m.Eggs = Eggs
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sys.modules['Spam'] = m
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import Spam
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def get_more_yolks(self):
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return self.yolks + 3
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def get_more_yolks(self):
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return self.yolks + 3
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print 'new.classobj()'
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C = new.classobj('Spam', (Spam.Eggs,), {'get_more_yolks': get_more_yolks})
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if verbose:
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print C
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print 'new.instance()'
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c = new.instance(C, {'yolks': 3})
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if verbose:
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print c
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o = new.instance(C)
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verify(o.__dict__ == {},
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"new __dict__ should be empty")
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del o
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o = new.instance(C, None)
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verify(o.__dict__ == {},
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"new __dict__ should be empty")
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del o
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# new.classobj()
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C = new.classobj('Spam', (Spam.Eggs,), {'get_more_yolks': get_more_yolks})
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def break_yolks(self):
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self.yolks = self.yolks - 2
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print 'new.instancemethod()'
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im = new.instancemethod(break_yolks, c, C)
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if verbose:
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print im
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# new.instance()
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c = new.instance(C, {'yolks': 3})
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verify(c.get_yolks() == 3 and c.get_more_yolks() == 6,
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'Broken call of hand-crafted class instance')
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im()
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verify(c.get_yolks() == 1 and c.get_more_yolks() == 4,
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'Broken call of hand-crafted instance method')
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o = new.instance(C)
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self.assertEqual(o.__dict__, {}, "new __dict__ should be empty")
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del o
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o = new.instance(C, None)
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self.assertEqual(o.__dict__, {}, "new __dict__ should be empty")
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del o
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im = new.instancemethod(break_yolks, c)
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im()
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verify(c.get_yolks() == -1)
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try:
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new.instancemethod(break_yolks, None)
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except TypeError:
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pass
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else:
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raise TestFailed, "dangerous instance method creation allowed"
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def break_yolks(self):
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self.yolks = self.yolks - 2
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# Verify that instancemethod() doesn't allow keyword args
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try:
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new.instancemethod(break_yolks, c, kw=1)
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except TypeError:
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pass
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else:
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raise TestFailed, "instancemethod shouldn't accept keyword args"
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# new.instancemethod()
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im = new.instancemethod(break_yolks, c, C)
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# It's unclear what the semantics should be for a code object compiled at
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# module scope, but bound and run in a function. In CPython, `c' is global
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# (by accident?) while in Jython, `c' is local. The intent of the test
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# clearly is to make `c' global, so let's be explicit about it.
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codestr = '''
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global c
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a = 1
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b = 2
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c = a + b
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'''
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self.assertEqual(c.get_yolks(), 3,
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'Broken call of hand-crafted class instance')
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self.assertEqual(c.get_more_yolks(), 6,
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'Broken call of hand-crafted class instance')
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ccode = compile(codestr, '<string>', 'exec')
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# Jython doesn't have a __builtins__, so use a portable alternative
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import __builtin__
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g = {'c': 0, '__builtins__': __builtin__}
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# this test could be more robust
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print 'new.function()'
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func = new.function(ccode, g)
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if verbose:
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print func
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func()
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verify(g['c'] == 3,
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'Could not create a proper function object')
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im()
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self.assertEqual(c.get_yolks(), 1,
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'Broken call of hand-crafted instance method')
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self.assertEqual(c.get_more_yolks(), 4,
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'Broken call of hand-crafted instance method')
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# test the various extended flavors of function.new
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def f(x):
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def g(y):
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return x + y
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return g
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g = f(4)
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new.function(f.func_code, {}, "blah")
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g2 = new.function(g.func_code, {}, "blah", (2,), g.func_closure)
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verify(g2() == 6)
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g3 = new.function(g.func_code, {}, "blah", None, g.func_closure)
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verify(g3(5) == 9)
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def test_closure(func, closure, exc):
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try:
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new.function(func.func_code, {}, "", None, closure)
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except exc:
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pass
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else:
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print "corrupt closure accepted"
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im = new.instancemethod(break_yolks, c)
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im()
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self.assertEqual(c.get_yolks(), -1)
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test_closure(g, None, TypeError) # invalid closure
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test_closure(g, (1,), TypeError) # non-cell in closure
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test_closure(g, (1, 1), ValueError) # closure is wrong size
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test_closure(f, g.func_closure, ValueError) # no closure needed
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# Verify that dangerous instance method creation is forbidden
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self.assertRaises(TypeError, new.instancemethod, break_yolks, None)
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print 'new.code()'
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# bogus test of new.code()
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# Note: Jython will never have new.code()
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if hasattr(new, 'code'):
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def f(a): pass
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# Verify that instancemethod() doesn't allow keyword args
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self.assertRaises(TypeError, new.instancemethod, break_yolks, c, kw=1)
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c = f.func_code
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argcount = c.co_argcount
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nlocals = c.co_nlocals
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stacksize = c.co_stacksize
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flags = c.co_flags
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codestring = c.co_code
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constants = c.co_consts
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names = c.co_names
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varnames = c.co_varnames
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filename = c.co_filename
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name = c.co_name
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firstlineno = c.co_firstlineno
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lnotab = c.co_lnotab
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freevars = c.co_freevars
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cellvars = c.co_cellvars
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def test_scope(self):
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# It's unclear what the semantics should be for a code object compiled
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# at module scope, but bound and run in a function. In CPython, `c' is
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# global (by accident?) while in Jython, `c' is local. The intent of
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# the test clearly is to make `c' global, so let's be explicit about it.
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codestr = '''
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global c
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a = 1
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b = 2
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c = a + b
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'''
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d = new.code(argcount, nlocals, stacksize, flags, codestring,
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constants, names, varnames, filename, name,
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firstlineno, lnotab, freevars, cellvars)
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codestr = "\n".join(l.strip() for l in codestr.splitlines())
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# test backwards-compatibility version with no freevars or cellvars
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d = new.code(argcount, nlocals, stacksize, flags, codestring,
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constants, names, varnames, filename, name,
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firstlineno, lnotab)
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ccode = compile(codestr, '<string>', 'exec')
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# Jython doesn't have a __builtins__, so use a portable alternative
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import __builtin__
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g = {'c': 0, '__builtins__': __builtin__}
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try: # this used to trigger a SystemError
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d = new.code(-argcount, nlocals, stacksize, flags, codestring,
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constants, names, varnames, filename, name,
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firstlineno, lnotab)
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except ValueError:
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pass
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else:
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raise TestFailed, "negative co_argcount didn't trigger an exception"
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# this test could be more robust
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func = new.function(ccode, g)
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func()
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self.assertEqual(g['c'], 3, 'Could not create a proper function object')
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try: # this used to trigger a SystemError
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d = new.code(argcount, -nlocals, stacksize, flags, codestring,
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constants, names, varnames, filename, name,
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firstlineno, lnotab)
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except ValueError:
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pass
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else:
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raise TestFailed, "negative co_nlocals didn't trigger an exception"
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def test_function(self):
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# test the various extended flavors of function.new
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def f(x):
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def g(y):
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return x + y
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return g
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g = f(4)
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new.function(f.func_code, {}, "blah")
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g2 = new.function(g.func_code, {}, "blah", (2,), g.func_closure)
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self.assertEqual(g2(), 6)
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g3 = new.function(g.func_code, {}, "blah", None, g.func_closure)
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self.assertEqual(g3(5), 9)
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def test_closure(func, closure, exc):
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self.assertRaises(exc, new.function, func.func_code, {}, "", None, closure)
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try: # this used to trigger a Py_FatalError!
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d = new.code(argcount, nlocals, stacksize, flags, codestring,
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constants, (5,), varnames, filename, name,
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firstlineno, lnotab)
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except TypeError:
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pass
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else:
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raise TestFailed, "non-string co_name didn't trigger an exception"
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test_closure(g, None, TypeError) # invalid closure
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test_closure(g, (1,), TypeError) # non-cell in closure
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test_closure(g, (1, 1), ValueError) # closure is wrong size
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test_closure(f, g.func_closure, ValueError) # no closure needed
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# new.code used to be a way to mutate a tuple...
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class S(str): pass
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t = (S("ab"),)
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d = new.code(argcount, nlocals, stacksize, flags, codestring,
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constants, t, varnames, filename, name,
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firstlineno, lnotab)
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verify(type(t[0]) is S, "eek, tuple changed under us!")
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# Note: Jython will never have new.code()
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if hasattr(new, 'code'):
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def test_code(self):
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# bogus test of new.code()
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def f(a): pass
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if verbose:
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print d
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c = f.func_code
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argcount = c.co_argcount
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nlocals = c.co_nlocals
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stacksize = c.co_stacksize
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flags = c.co_flags
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codestring = c.co_code
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constants = c.co_consts
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names = c.co_names
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varnames = c.co_varnames
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filename = c.co_filename
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name = c.co_name
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firstlineno = c.co_firstlineno
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lnotab = c.co_lnotab
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freevars = c.co_freevars
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cellvars = c.co_cellvars
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d = new.code(argcount, nlocals, stacksize, flags, codestring,
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constants, names, varnames, filename, name,
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firstlineno, lnotab, freevars, cellvars)
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# test backwards-compatibility version with no freevars or cellvars
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d = new.code(argcount, nlocals, stacksize, flags, codestring,
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constants, names, varnames, filename, name,
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firstlineno, lnotab)
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# negative co_argcount used to trigger a SystemError
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self.assertRaises(ValueError, new.code,
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-argcount, nlocals, stacksize, flags, codestring,
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constants, names, varnames, filename, name, firstlineno, lnotab)
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# negative co_nlocals used to trigger a SystemError
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self.assertRaises(ValueError, new.code,
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argcount, -nlocals, stacksize, flags, codestring,
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constants, names, varnames, filename, name, firstlineno, lnotab)
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# non-string co_name used to trigger a Py_FatalError
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self.assertRaises(TypeError, new.code,
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argcount, nlocals, stacksize, flags, codestring,
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constants, (5,), varnames, filename, name, firstlineno, lnotab)
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# new.code used to be a way to mutate a tuple...
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class S(str):
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pass
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t = (S("ab"),)
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d = new.code(argcount, nlocals, stacksize, flags, codestring,
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constants, t, varnames, filename, name,
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firstlineno, lnotab)
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self.assert_(type(t[0]) is S, "eek, tuple changed under us!")
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def test_main():
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test_support.run_unittest(NewTest)
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if __name__ == "__main__":
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test_main()
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