rust-lang / rust-lang/rust

libtest json output gets intermixed with non-captured output from tests

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#132,135 3 comments 1 reaction 0 assignees View on GitHub

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A-libtest C-feature-request T-testing-devex
Dominant language
Rust
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Forks
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Description

Right now the JSON output of libtest is a bit unusable. It outputs all of the json messages to stdout where they get mixed with the rest of the stdout.

It would be nice to be able to output it to a file (it shouldn't particularly hard to do since the OutputFormatter only requires Write) and also to be able to customize what the json formatter outputs.

@rustbot tag +T-bootrstap

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  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 inspecting libtest's OutputFormatter and the JSON formatter, focusing on how JSON messages are written to stdout alongside test output. Define how an alternate output destination and customizable JSON output should work; done means JSON is no longer intermixed with uncaptured test output and the requested customization is supported.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
cli, testing-qa
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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