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# Test btree interaction with the garbage collector.
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try:
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import btree, uio, gc
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except ImportError:
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print("SKIP")
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raise SystemExit
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N = 80
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# Create a BytesIO but don't keep a reference to it.
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db = btree.open(uio.BytesIO(), pagesize=512)
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# Overwrite lots of the Python stack to make sure no reference to the BytesIO remains.
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x = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
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# Write lots of key/value pairs, which fill up the DB and also allocate temporary heap
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# memory due to the string addition, and do a GC collect to verify that the BytesIO
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# is not collected.
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for i in range(N):
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db[b"thekey" + str(i)] = b"thelongvalue" + str(i)
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print(db[b"thekey" + str(i)])
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gc.collect()
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# Reclaim memory allocated by the db object.
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db.close()
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