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https://github.com/micropython/micropython.git
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Damien George
6f96d260e6
The webassembly port needs some additional weakref tests due to the fact that garbage collection only happens when Python execution finishes and JavaScript resumes. The `tests/ports/webassembly/heap_expand.py` expected output also needs to be updated because the amount of GC heap got smaller (weakref WTB takes some of the available RAM). Signed-off-by: Damien George <damien@micropython.org>
37 lines
905 B
Python
37 lines
905 B
Python
# Test weakref when multiple weak references are active.
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#
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# This test has different output to CPython due to the order that MicroPython
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# executes weak reference callbacks.
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try:
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import weakref
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except ImportError:
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print("SKIP")
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raise SystemExit
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# gc module must be available if weakref is.
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import gc
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class A:
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def __str__(self):
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return "<A object>"
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def test():
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global r1, r2 # needed for webassembly port to retain references to them
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print("test having multiple ref and finalize objects referencing the same thing")
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a = A()
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r1 = weakref.ref(a, lambda r: print("ref1", r()))
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f1 = weakref.finalize(a, lambda: print("finalize1"))
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r2 = weakref.ref(a, lambda r: print("ref2", r()))
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f2 = weakref.finalize(a, lambda: print("finalize2"))
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print(r1(), f1.alive, r2(), f2.alive)
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a = None
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clean_the_stack = [0, 0, 0, 0]
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gc.collect()
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test()
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