tests/engine_test:
tests/engine_test:

Added tests for `engine.run_risk` and `engine.run_hazard`.


Former-commit-id: 477c7566c8514d5b807949408733c86b899926bf [formerly 2cb3d1f6911d0760275c59684d0a338f15fc2ae0]
Former-commit-id: f8dccd7bd4d87c254fc1b0c7df36200891ea9e37
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine