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import inspect
import sys
import unittest
from _pydevd_bundle.pydevd_save_locals import save_locals
from _pydevd_bundle.pydevd_constants import IS_JYTHON, IS_IRONPYTHON
import pytest
def use_save_locals(name, value):
"""
Attempt to set the local of the given name to value, using locals_to_fast.
"""
frame = inspect.currentframe().f_back
locals_dict = frame.f_locals
locals_dict[name] = value
save_locals(frame)
def check_method(fn):
"""
A harness for testing methods that attempt to modify the values of locals on the stack.
"""
x = 1
# The method 'fn' should attempt to set x = 2 in the current frame.
fn('x', 2)
return x
@pytest.mark.skipif(IS_JYTHON or IS_IRONPYTHON, reason='CPython/pypy only')
class TestSetLocals(unittest.TestCase):
"""
Test setting locals in one function from another function using several approaches.
"""
def test_set_locals_using_save_locals(self):
x = check_method(use_save_locals)
self.assertEqual(x, 2) # Expected to succeed
def test_frame_simple_change(self):
frame = sys._getframe()
a = 20
frame.f_locals['a'] = 50
save_locals(frame)
self.assertEqual(50, a)
def test_frame_co_freevars(self):
outer_var = 20
def func():
frame = sys._getframe()
frame.f_locals['outer_var'] = 50
save_locals(frame)
self.assertEqual(50, outer_var)
func()
def test_frame_co_cellvars(self):
def check_co_vars(a):
frame = sys._getframe()
def function2():
print(a)
assert 'a' in frame.f_code.co_cellvars
frame = sys._getframe()
frame.f_locals['a'] = 50
save_locals(frame)
self.assertEqual(50, a)
check_co_vars(1)
def test_frame_change_in_inner_frame(self):
def change(f):
self.assertTrue(f is not sys._getframe())
f.f_locals['a']= 50
save_locals(f)
frame = sys._getframe()
a = 20
change(frame)
self.assertEqual(50, a)
if __name__ == '__main__':
suite = unittest.TestSuite()
# suite.addTest(TestSetLocals('test_set_locals_using_dict'))
# #suite.addTest(Test('testCase10a'))
# unittest.TextTestRunner(verbosity=3).run(suite)
suite = unittest.makeSuite(TestSetLocals)
unittest.TextTestRunner(verbosity=3).run(suite)
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