1 files changed, 26 insertions, 0 deletions
diff --git a/tests/basics/io_write_ext.py b/tests/basics/io_write_ext.py
new file mode 100644
index 0000000000..5a6eaa35cf
--- /dev/null
+++ b/tests/basics/io_write_ext.py
@@ -0,0 +1,26 @@
+# This tests extended (MicroPython-specific) form of write:
+# write(buf, len) and write(buf, offset, len)
+import uio
+
+try:
+    uio.BytesIO
+except AttributeError:
+    print('SKIP')
+    raise SystemExit
+
+buf = uio.BytesIO()
+
+buf.write(b"foo", 2)
+print(buf.getvalue())
+
+buf.write(b"foo", 100)
+print(buf.getvalue())
+
+buf.write(b"foobar", 1, 3)
+print(buf.getvalue())
+
+buf.write(b"foobar", 1, 100)
+print(buf.getvalue())
+
+buf.write(b"foobar", 100, 100)
+print(buf.getvalue())