alamb opened a new pull request, #14250:
URL: https://github.com/apache/datafusion/pull/14250

   ## Which issue does this PR close?
   
   - Related to https://github.com/apache/datafusion/pull/14223
   
   
   
   ## Rationale for this change
   
   While reviewing https://github.com/apache/datafusion/pull/14223 I 
misinterpreted the impact of a change.
   @jonahgao straightened me out in 
https://github.com/apache/datafusion/pull/14223/files#r1926245243 and had a 
good suggestion of how to test the behavior (don't overly extend the output 
types)
   
   So let's add some tests to automatically ensure the coercion is working 
correctly
   
   
   ## What changes are included in this PR?
   
   Add tests that show the output type of arithmetic operations with different 
input types
   
   
   
   ## Are these changes tested?
   It is only tests, no behavior change
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   2. Serve as another way to document the expected behavior of the code
   
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   ## Are there any user-facing changes?
   
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