Github user liming01 commented on the issue:
https://github.com/apache/incubator-hawq/pull/1198
After investigation, it seems we can not use cmock to reproduce HAWQ-1417.
The reason is: we need to mock all functions called in these functions, and
also we need make one relation with catalog in memory, and data on disk.
I looked into some unit tests exists in backend, all tests are testing
simple logic, and calling some independent modules, so the functions need to be
mocked is very limited.
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