[jira] [Closed] (CALCITE-4917) Add test for 'a IS NOT NULL AND a = b' simplification

["Rui Wang (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CALCITE-4917?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rui Wang closed CALCITE-4917.
-----------------------------

> Add test for 'a IS NOT NULL AND a = b' simplification
> -----------------------------------------------------
>
>                 Key: CALCITE-4917
>                 URL: https://issues.apache.org/jira/browse/CALCITE-4917
>             Project: Calcite
>          Issue Type: Test
>          Components: core
>    Affects Versions: 1.28.0
>            Reporter: Alessandro Solimando
>            Assignee: Alessandro Solimando
>            Priority: Minor
>              Labels: pull-request-available
>             Fix For: 1.29.0
>
>          Time Spent: 2h 40m
>  Remaining Estimate: 0h
>
> Simplification (from _RexSimplify_ class) is mostly covered in {_}RexProgramTest{_}, but tests for expressions of the form "IS NOT NULL(a) AND a=b" (with nullable and not nullable types) seem to be missing.
>  
> Since I had to write tests to make sure the simplification was as expected, I assume others might end up doing the same, and that the tests will both act as documentation and it will also protect against regressions.



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