[Piglit] [PATCH 2/3] results. make assert in JSONWriter.close_json() more verbose

[Dylan Baker]

Signed-off-by: Dylan Baker <baker.dylan.c at gmail.com>
---
 framework/results.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/framework/results.py b/framework/results.py
index 1a6a652..a715b29 100644
--- a/framework/results.py
+++ b/framework/results.py
@@ -168,7 +168,9 @@ class JSONWriter(object):
 
         """
         self.close_dict()
-        assert self._open_containers == []
+        # Parens make this evaluate differently?
+        assert self._open_containers == [], \
+            "containers stack: {0}".format(self._open_containers)
 
         self.file.close()
 
-- 
2.0.0