[ARROW-3303] [C++] Enable example arrays to be written with a simplified JSON representation

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.12.0
• Component/s: C++
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/19640
• Assignee: Antoine Pitrou
• Reporter: Wes McKinney
• Created: 23/Sep/18 19:37
• Updated: 11/Jan/23 07:26
• Resolved: 09/Dec/18 19:28

Description

In addition to making it easier to generate random data as described in ARROW-2329, I think it would be useful to reduce some of the boilerplate associated with writing down explicit test cases. The benefits of this will be especially pronounced when writing nested arrays.

Example code that could be improved this way:

https://github.com/apache/arrow/blob/master/cpp/src/arrow/array-test.cc#L3271

Rather than having a ton of hand-written assertions, we could compare with the expected true dataset. Of course, this itself has to be tested endogenously, but I think we can write enough tests for the JSON parser bit to be able to have confidence in tests that are written with it

Issue Links

• links to: GitHub Pull Request #3084