leihou6116 opened a new issue, #38652:
URL: https://github.com/apache/arrow/issues/38652

   ### Describe the enhancement requested
   
   The current tests for MATLAB interface `arrow.array.Time32Array.fromMATLAB` 
and `arrow.array.Time64Array.fromMATLAB` don't cover the preservation of time 
precision when `TimeUnit` is specified. The design might be changed in the 
future. If we add tests to cover the current behavior, the tests will be 
helpful to evaluate impact in the future.
   
   **An example of current behavior:**
   ```matlab
   >> t = duration(0,0,1.5, 'Format', 'hh:mm:ss.SSS')
   t = 
     duration
      00:00:01.500
   
   >> arrow.array.Time32Array.fromMATLAB(t)
   ans = 
     Time32Array with 1 element and 0 null values:
       00:00:02
   ```
   
   
   ### Component(s)
   
   MATLAB


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