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Tickets ... - PCQA-837 - PCQA-838 - PCQA-839 - PCQA-840 - PCQA-841 Merge-request: IJ-MR-152351 Merged-by: Pavel Karateev <Pavel.Karateev@jetbrains.com> GitOrigin-RevId: a35e5b70e1bb5c781bdcfd78f7ea4cc5824057c7
125 lines
4.0 KiB
Python
125 lines
4.0 KiB
Python
import sys
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import threading
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import time
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import unittest
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import pytest
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from _pydevd_bundle import pydevd_referrers
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from _pydev_bundle.pydev_imports import StringIO
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from _pydevd_bundle.pydevd_constants import IS_PY2
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from _pydevd_bundle.pydevd_constants import IS_PY311_OR_GREATER
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try:
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import gc
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gc.get_referrers(unittest)
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has_referrers = True
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except NotImplementedError:
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has_referrers = False
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# Only do get referrers tests if it's actually available.
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@pytest.mark.skipif(not has_referrers, reason='gc.get_referrers not implemented')
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class Test(unittest.TestCase):
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def test_get_referrers1(self):
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container = []
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contained = [1, 2]
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container.append(0)
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container.append(contained)
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# Ok, we have the contained in this frame and inside the given list (which on turn is in this frame too).
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# we should skip temporary references inside the get_referrer_info.
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result = pydevd_referrers.get_referrer_info(contained)
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assert 'list[1]' in result
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pydevd_referrers.print_referrers(contained, stream=StringIO())
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@pytest.mark.xfail(IS_PY311_OR_GREATER, reason='PCQA-848')
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def test_get_referrers2(self):
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class MyClass(object):
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def __init__(self):
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pass
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contained = [1, 2]
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obj = MyClass()
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obj.contained = contained
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del contained
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# Ok, we have the contained in this frame and inside the given list (which on turn is in this frame too).
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# we should skip temporary references inside the get_referrer_info.
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result = pydevd_referrers.get_referrer_info(obj.contained)
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assert 'found_as="contained"' in result
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assert 'MyClass' in result
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@pytest.mark.xfail(IS_PY311_OR_GREATER, reason='PCQA-849')
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def test_get_referrers3(self):
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class MyClass(object):
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def __init__(self):
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pass
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contained = [1, 2]
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obj = MyClass()
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obj.contained = contained
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del contained
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# Ok, we have the contained in this frame and inside the given list (which on turn is in this frame too).
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# we should skip temporary references inside the get_referrer_info.
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result = pydevd_referrers.get_referrer_info(obj.contained)
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assert 'found_as="contained"' in result
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assert 'MyClass' in result
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@pytest.mark.xfail(IS_PY311_OR_GREATER, reason='PCQA-850')
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def test_get_referrers4(self):
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class MyClass(object):
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def __init__(self):
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pass
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obj = MyClass()
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obj.me = obj
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# Let's see if we detect the cycle...
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result = pydevd_referrers.get_referrer_info(obj)
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assert 'found_as="me"' in result # Cyclic ref
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def test_get_referrers5(self):
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container = dict(a=[1])
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# Let's see if we detect the cycle...
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result = pydevd_referrers.get_referrer_info(container['a'])
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assert 'test_get_referrers5' not in result # I.e.: NOT in the current method
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assert 'found_as="a"' in result
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assert 'dict' in result
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assert str(id(container)) in result
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@pytest.mark.xfail(IS_PY2, reason="PCQA-717")
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def test_get_referrers6(self):
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import sys
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container = dict(a=[1])
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def should_appear(obj):
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# Let's see if we detect the cycle...
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return pydevd_referrers.get_referrer_info(obj)
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result = should_appear(container['a'])
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if sys.version_info[:2] >= (3, 7):
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# In Python 3.7 the frame is not appearing in gc.get_referrers.
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assert 'should_appear' not in result
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else:
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assert 'should_appear' in result
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def test_get_referrers7(self):
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class MyThread(threading.Thread):
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def run(self):
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# Note: we do that because if we do
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self.frame = sys._getframe()
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t = MyThread()
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t.start()
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while not hasattr(t, 'frame'):
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time.sleep(0.01)
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result = pydevd_referrers.get_referrer_info(t.frame)
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assert 'MyThread' in result
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