David Li created ARROW-12859:
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Summary: [C++] Add DatumFromJSON for easier testing
Key: ARROW-12859
URL: https://issues.apache.org/jira/browse/ARROW-12859
Project: Apache Arrow
Issue Type: Improvement
Components: C++
Reporter: David Li
Assignee: David Li
For kernels that accept/return permutations of array/scalar arguments, having a
single DatumFromJSON would make things much easier to test (as then we can have
helper test methods that just take {{const std::string&}} instead of having to
make many overloads for the various input/output permutations).
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