Add SelectionPredicate to test_predicates tuple
@@ -337,7 +337,7 @@ def condition(predicate, if_true, if_false, **kwargs):
core.FieldEqualPredicate, core.FieldOneOfPredicate,
core.FieldRangePredicate, core.FieldLTPredicate,
core.FieldGTPredicate, core.FieldLTEPredicate,
- core.FieldGTEPredicate)
+ core.FieldGTEPredicate, core.SelectionPredicate)
if isinstance(predicate, NamedSelection):
condition = {'selection': predicate._get_name()}
