Tests: Set sys.stdout as utf8

test/run_all

@@ -12,6 +12,9 @@ from multiprocessing import cpu_count
 from threading import Thread
 from subprocess import call, Popen, PIPE
 
+if sys.version_info > (3,):
+    import codecs
+
 try:
     # python 2
     from Queue import Queue, Empty
@@ -200,6 +203,9 @@ def parse_args():
 
 
 def main():
+    if sys.version_info > (3,):
+        sys.stdout = codecs.getwriter("utf-8")(sys.stdout.detach())
+
     runner = TestRunner()
     runner.start()