framework: explicit utf-8 encoding for reading json

As the default encoding is platform dependent

diff --git a/run.py b/run.py
index 2d744e38c1d184c2156a4e86c1f05063205a5aa9..2319e339ecbe177c37cacf418ad42098e8d57a63 100755 (executable)
--- a/run.py
+++ b/run.py
@@ -484,7 +484,7 @@ class FilterCheck:
             raise TestError("%s does not exist" % (json_filename))
 
         count = 0
-        with open(json_filename, "r") as fileobj:
+        with open(json_filename, "r", encoding="utf-8") as fileobj:
             for line in fileobj:
                 event = json.loads(line)
                 if self.match(event):