microsoft / microsoft/Power-Fx

UO to DateTime should work without explicit coercion

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C#
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Description

The expression DateTimeValue(ParseJSON("""8/13/2024 9:10 AM""")) should work without the need to call Text first.

image

When passing an UO value, there is an extra regex check IsValidDateTimeUO.
https://github.com/microsoft/Power-Fx/blob/aa26cfadd8b1158fc23a81bd70972e16cb434530/src/libraries/Microsoft.PowerFx.Interpreter/Functions/LibraryUntypedObject.cs#L523C21-L523C38

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Research direction

Start in src/libraries/Microsoft.PowerFx.Interpreter/Functions/LibraryUntypedObject.cs around IsValidDateTimeUO, then trace how DateTimeValue handles the untyped object returned by ParseJSON. Verify that DateTimeValue(ParseJSON("8/13/2024 9:10 AM")) works without an explicit Text conversion and add or update regression coverage if the surrounding tests identify the appropriate location.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp
Domain
compilers
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Clearly specified
Newbie friendliness
45/100

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