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heap_lock.py

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# check that heap_lock/heap_unlock work as expected

import micropython

l = []

l2 = list(range(100))

micropython.heap_lock()

micropython.heap_lock()

# general allocation on the heap

try:

print([])

except MemoryError:

print("MemoryError")

# expansion of a heap block

try:

l.extend(l2)

except MemoryError:

print("MemoryError")

print(micropython.heap_unlock())

# Should still fail

try:

print([])

except MemoryError:

print("MemoryError")

micropython.heap_unlock()

# check that allocation works after an unlock

print([])