micropython: add micropython component

components/language/micropython/tests/basics/io_buffered_writer.py

@@ -0,0 +1,27 @@
+import uio as io
+
+try:
+    io.BytesIO
+    io.BufferedWriter
+except AttributeError:
+    print('SKIP')
+    raise SystemExit
+
+bts = io.BytesIO()
+buf = io.BufferedWriter(bts, 8)
+
+buf.write(b"foobar")
+print(bts.getvalue())
+buf.write(b"foobar")
+# CPython has different flushing policy, so value below is different
+print(bts.getvalue())
+buf.flush()
+print(bts.getvalue())
+buf.flush()
+print(bts.getvalue())
+
+# special case when alloc is a factor of total buffer length
+bts = io.BytesIO()
+buf = io.BufferedWriter(bts, 1)
+buf.write(b"foo")
+print(bts.getvalue())