Add unit testing information

[MisinformedDNA]

Type of issue

Missing information

Description

Unit testing is extremely important for creating Source Generators and not showing how to unit test nor highly recommending it, leads to devs thinking they don't need them, which just leads to endless complaints. See dotnet/roslyn#48083.

Page URL

https://learn.microsoft.com/en-us/dotnet/csharp/roslyn-sdk/source-generators-overview

Content source URL

https://github.com/dotnet/docs/blob/main/docs/csharp/roslyn-sdk/source-generators-overview.md

Document Version Independent Id

f1ed9873-3e29-b4bd-2dbb-44dd9a05d790

Article author

BillWagner

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Associated WorkItem - 331094

[BillWagner]

Tagging @KathleenDollard

She's working on new material in this space.