From b32880bd513b868465ad2ffd9b698c13ce7f964a Mon Sep 17 00:00:00 2001
From: Paul Sokolovsky <pfalcon@users.sourceforge.net>
Date: Thu, 2 Feb 2017 00:38:38 +0300
Subject: [PATCH] tests/heapalloc_bytesio: Test for BytesIO with preallocates
 space.

---
 tests/micropython/heapalloc_bytesio.py     | 13 +++++++++++++
 tests/micropython/heapalloc_bytesio.py.exp |  1 +
 2 files changed, 14 insertions(+)
 create mode 100644 tests/micropython/heapalloc_bytesio.py
 create mode 100644 tests/micropython/heapalloc_bytesio.py.exp

diff --git a/tests/micropython/heapalloc_bytesio.py b/tests/micropython/heapalloc_bytesio.py
new file mode 100644
index 0000000000..3116328518
--- /dev/null
+++ b/tests/micropython/heapalloc_bytesio.py
@@ -0,0 +1,13 @@
+import uio
+import micropython
+
+data = b"1234" * 16
+buf = uio.BytesIO(64)
+
+micropython.heap_lock()
+
+buf.write(data)
+
+micropython.heap_unlock()
+
+print(buf.getvalue())
diff --git a/tests/micropython/heapalloc_bytesio.py.exp b/tests/micropython/heapalloc_bytesio.py.exp
new file mode 100644
index 0000000000..675761c2bb
--- /dev/null
+++ b/tests/micropython/heapalloc_bytesio.py.exp
@@ -0,0 +1 @@
+b'1234123412341234123412341234123412341234123412341234123412341234'