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import unittest
import builtins
from collections import UserDict
from test.support import import_helper
from test.support import swap_attr
# Skip this test if the _testcapi module isn't available.
_testcapi = import_helper.import_module('_testcapi')
NULL = None
class PyEval_EvalCodeExTests(unittest.TestCase):
def test_simple(self):
def f():
return a
eval_code_ex = _testcapi.eval_code_ex
code = f.__code__
self.assertEqual(eval_code_ex(code, dict(a=1)), 1)
self.assertRaises(NameError, eval_code_ex, code, {})
self.assertRaises(SystemError, eval_code_ex, code, UserDict(a=1))
self.assertRaises(SystemError, eval_code_ex, code, [])
self.assertRaises(SystemError, eval_code_ex, code, 1)
# CRASHES eval_code_ex(code, NULL)
# CRASHES eval_code_ex(1, {})
# CRASHES eval_code_ex(NULL, {})
def test_custom_locals(self):
# Monkey-patch __build_class__ to get a class code object.
code = None
def build_class(func, name, /, *bases, **kwds):
nonlocal code
code = func.__code__
with swap_attr(builtins, '__build_class__', build_class):
class A:
# Uses LOAD_NAME for a
r[:] = [a]
eval_code_ex = _testcapi.eval_code_ex
results = []
g = dict(a=1, r=results)
self.assertIsNone(eval_code_ex(code, g))
self.assertEqual(results, [1])
self.assertIsNone(eval_code_ex(code, g, dict(a=2)))
self.assertEqual(results, [2])
self.assertIsNone(eval_code_ex(code, g, UserDict(a=3)))
self.assertEqual(results, [3])
self.assertIsNone(eval_code_ex(code, g, {}))
self.assertEqual(results, [1])
self.assertIsNone(eval_code_ex(code, g, NULL))
self.assertEqual(results, [1])
self.assertRaises(TypeError, eval_code_ex, code, g, [])
self.assertRaises(TypeError, eval_code_ex, code, g, 1)
self.assertRaises(NameError, eval_code_ex, code, dict(r=results), {})
self.assertRaises(NameError, eval_code_ex, code, dict(r=results), NULL)
self.assertRaises(TypeError, eval_code_ex, code, dict(r=results), [])
self.assertRaises(TypeError, eval_code_ex, code, dict(r=results), 1)
def test_with_args(self):
def f(a, b, c):
return a
eval_code_ex = _testcapi.eval_code_ex
code = f.__code__
self.assertEqual(eval_code_ex(code, {}, {}, (1, 2, 3)), 1)
self.assertRaises(TypeError, eval_code_ex, code, {}, {}, (1, 2))
self.assertRaises(TypeError, eval_code_ex, code, {}, {}, (1, 2, 3, 4))
def test_with_kwargs(self):
def f(a, b, c):
return a
eval_code_ex = _testcapi.eval_code_ex
code = f.__code__
self.assertEqual(eval_code_ex(code, {}, {}, (), dict(a=1, b=2, c=3)), 1)
self.assertRaises(TypeError, eval_code_ex, code, {}, {}, (), dict(a=1, b=2))
self.assertRaises(TypeError, eval_code_ex, code, {}, {}, (), dict(a=1, b=2))
self.assertRaises(TypeError, eval_code_ex, code, {}, {}, (), dict(a=1, b=2, c=3, d=4))
def test_with_default(self):
def f(a):
return a
eval_code_ex = _testcapi.eval_code_ex
code = f.__code__
self.assertEqual(eval_code_ex(code, {}, {}, (), {}, (1,)), 1)
self.assertRaises(TypeError, eval_code_ex, code, {}, {}, (), {}, ())
def test_with_kwarg_default(self):
def f(*, a):
return a
eval_code_ex = _testcapi.eval_code_ex
code = f.__code__
self.assertEqual(eval_code_ex(code, {}, {}, (), {}, (), dict(a=1)), 1)
self.assertRaises(TypeError, eval_code_ex, code, {}, {}, (), {}, (), {})
self.assertRaises(TypeError, eval_code_ex, code, {}, {}, (), {}, (), NULL)
self.assertRaises(SystemError, eval_code_ex, code, {}, {}, (), {}, (), UserDict(a=1))
self.assertRaises(SystemError, eval_code_ex, code, {}, {}, (), {}, (), [])
self.assertRaises(SystemError, eval_code_ex, code, {}, {}, (), {}, (), 1)
def test_with_closure(self):
a = 1
b = 2
def f():
b
return a
eval_code_ex = _testcapi.eval_code_ex
code = f.__code__
self.assertEqual(eval_code_ex(code, {}, {}, (), {}, (), {}, f.__closure__), 1)
self.assertEqual(eval_code_ex(code, {}, {}, (), {}, (), {}, f.__closure__[::-1]), 2)
# CRASHES eval_code_ex(code, {}, {}, (), {}, (), {}, ()), 1)
# CRASHES eval_code_ex(code, {}, {}, (), {}, (), {}, NULL), 1)
if __name__ == "__main__":
unittest.main()