kmstest: Raise clear exception when property is not found

When converting a property value string to an integer, if the property
is not found, an AttributeError exception is raised and reports that
"'NoneType' object has no attribute 'type'". This isn't very clear,
replace it with a RuntimeError with a proper message.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/tests/kmstest.py b/tests/kmstest.py
index e84d8fe..3e53def 100755
--- a/tests/kmstest.py
+++ b/tests/kmstest.py
@@ -268,6 +268,8 @@ class AtomicRequest(pykms.AtomicReq):
             if isinstance(v, str):
                 if v.endswith('%'):
                     prop = obj.get_prop(k)
+                    if not prop:
+                        raise RuntimeError(f'Property {k} not supported by object {obj}')
                     if prop.type not in (pykms.PropertyType.Range, pykms.PropertyType.SignedRange):
                         raise RuntimeError(f'Unsupported property type {prop.type} for value {v}')