From d2bab10efe05e8ec209fd5a360778a2d7c8d7f54 Mon Sep 17 00:00:00 2001
From: Guohan Lu <lguohan@gmail.com>
Date: Sun, 19 Jul 2020 07:07:38 +0000
Subject: [PATCH] [vstest]: use BytesIO for file operations

this is another py3 fix

Signed-off-by: Guohan Lu <lguohan@gmail.com>
---
 tests/conftest.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/conftest.py b/tests/conftest.py
index 26aed021ab04..75722dfd014d 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -421,7 +421,7 @@ def runcmd(self, cmd):
         return (exitcode, out)
 
     def copy_file(self, path, filename):
-        tarstr = io.StringIO()
+        tarstr = io.BytesIO()
         tar = tarfile.open(fileobj=tarstr, mode="w")
         tar.add(filename, os.path.basename(filename))
         tar.close()