[Piglit] [PATCH 2/3] framework/exceptions: Add an exception class for user errors

[Dylan Baker]

It's nice to separate "something internally went wrong" and "you
mis-configured or passed bad flags".

Signed-off-by: Dylan Baker <dylanx.c.baker at intel.com>
---
 framework/exceptions.py | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/framework/exceptions.py b/framework/exceptions.py
index ffee7f315..6ca3ed773 100644
--- a/framework/exceptions.py
+++ b/framework/exceptions.py
@@ -56,6 +56,9 @@ def handler(func):
             print('Aborting Piglit execution: {}'.format(str(e)),
                   file=sys.stderr)
             sys.exit(3)
+        except PiglitUserError as e:
+            print('User error: {}'.format(str(e)), file=sys.stderr)
+            sys.exit(1)
 
     return _inner
 
@@ -94,6 +97,14 @@ class PiglitFatalError(Exception):
     """
 
 
+class PiglitUserError(Exception):
+    """Class for user configuration errors.
+
+    When this class (or a subclass) is raised it should be raised all the way
+    to the top of the program where it exits.
+    """
+
+
 class PiglitAbort(Exception):
     """Class for non-errors that require piglit aborting.
 
-- 
2.12.2