Added more tests to cover more get_calculations() cases (none complete, none whatsoever)
Added more tests to cover more get_calculations() cases (none complete, none whatsoever)


Former-commit-id: b70d1dc2f365181a3c39e05c25dfa8f26eff6ebc [formerly dec17aa6cf92c03df35ae81c543daef5e963af6c]
Former-commit-id: 5843bf4f3138451380b2a01895feaab44a22df79
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine