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process::ExitStatus should have some kind of constructor #32713

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@nrc

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@nrc

Because ExitStatus has a private field it is impossible to create one in user code, one must actually execute a process. This prevents testing/mocking. My use case is that I have some function which runs a process and generates data, however, for testing I want to mock the test run and just return a success exit status and some data. I can't do that because I can't create my own ExitStatus objects.

At the least there should be a way to create a success ExitStatus. Preferably, there would be a way to create various fail statuses too.

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    B-unstableBlocker: Implemented in the nightly compiler and unstable.T-libs-apiRelevant to the library API team, which will review and decide on the PR/issue.final-comment-periodIn the final comment period and will be merged soon unless new substantive objections are raised.

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