Jingsong Lee created FLINK-22336:
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Summary: [umbrella] Enhance testing for built-in functions
Key: FLINK-22336
URL: https://issues.apache.org/jira/browse/FLINK-22336
Project: Flink
Issue Type: Test
Components: Table SQL / Runtime
Reporter: Jingsong Lee
Fix For: 1.14.0
We can complement the testing for existing functions, from the following
aspects:
* test all support types
* test normal value, random value, extreme value and illegal value of
parameters
* test null value of parameters
* test return null value
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