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dpgeorgedpgeorge
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tests/stress: Add test to verify the GC can trace nested objects.
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‎tests/run-tests‎

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@@ -366,6 +366,7 @@ def run_tests(pyb, tests, args, base_path="."):
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skip_tests.add('micropython/heapalloc_traceback.py') # because native doesn't have proper traceback info
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skip_tests.add('micropython/heapalloc_iter.py') # requires generators
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skip_tests.add('micropython/schedule.py') # native code doesn't check pending events
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skip_tests.add('stress/gc_trace.py') # requires yield
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for test_file in tests:
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test_file = test_file.replace('\\', '/')

‎tests/stress/gc_trace.py‎

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# test that the GC can trace nested objects
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try:
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import gc
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except ImportError:
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print("SKIP")
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raise SystemExit
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# test a big shallow object pointing to many unique objects
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lst = [[i] for i in range(200)]
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gc.collect()
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print(lst)
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# test a deep object
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lst = [[[[[(i, j, k, l)] for i in range(3)] for j in range(3)] for k in range(3)] for l in range(3)]
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gc.collect()
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print(lst)

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