1 files changed, 18 insertions, 0 deletions
diff --git a/tests/micropython/heapalloc_slice.py b/tests/micropython/heapalloc_slice.py
new file mode 100644
index 000000000..62d96595c
--- /dev/null
+++ b/tests/micropython/heapalloc_slice.py
@@ -0,0 +1,18 @@
+# slice operations that don't require allocation
+try:
+    from micropython import heap_lock, heap_unlock
+except (ImportError, AttributeError):
+    heap_lock = heap_unlock = lambda: 0
+
+b = bytearray(range(10))
+
+m = memoryview(b)
+
+heap_lock()
+
+b[3:5] = b"aa"
+m[5:7] = b"bb"
+
+heap_unlock()
+
+print(b)