microsoft / microsoft/vs-threading

Offer a SynchronizationContext implementation that throws when posted to

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enhancement
Dominant language
C#
Stars
1k
Forks
160
Avg merge
1d 12h
Merged PRs (30d)
28

Description

Is your feature request related to a problem? Please describe.

@sharwell reports that in testing he finds it useful to define a SynchronizationContext implementation that throws when Post is invoked, thereby causing tests to fail if they run any code that tries to switch to the main thread (where he expects them to run free-threaded, I think).

Describe the solution you'd like

Offer such a SynchronizationContext implementation from the vs-threading library (or a dedicated testing library in its own package, perhaps) that folks can use.

Additional context

See @sharwell's comments on #322 for justification.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reviewing the justification in issue #322 and the existing Microsoft.VisualStudio.Threading library and testing-package structure. Define where the SynchronizationContext implementation should live, then add tests showing that invoking Post fails as requested and that the package can be consumed by tests.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp
Domain
tooling
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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