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# basic tests for gc module
try:
import gc
except ImportError:
print("SKIP")
raise SystemExit
print(gc.isenabled())
gc.disable()
print(gc.isenabled())
gc.enable()
print(gc.isenabled())
gc.collect()
if hasattr(gc, 'mem_free'):
# uPy has these extra functions
# just test they execute and return an int
assert type(gc.mem_free()) is int
assert type(gc.mem_alloc()) is int
if hasattr(gc, 'threshold'):
# uPy has this extra function
# check execution and returns
assert(gc.threshold(1) is None)
assert(gc.threshold() == 0)
assert(gc.threshold(-1) is None)
assert(gc.threshold() == -1)
# Setting a low threshold should trigger collection at the list alloc
gc.threshold(1)
[[], []]
gc.threshold(-1)
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