Fixed the event based core_test.py
Fixed the event based core_test.py


Former-commit-id: 44a7339dadea4bf677f921932b4dddce3c2ea203 [formerly 05df26f142949dc13af3fd3a7748f30f54a4008c]
Former-commit-id: 3705e21f9472574ff4a4a99d013ffd0eb016e5f5
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine