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Add unit tests for Windows ARM64 diagnostic probe logging

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Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
88/100
Issue type
Feature
Clarity
Clearly specified
Activity status
Active
Tech stack
python
Domain
testing, tooling

Research direction

Start with tools/diagnose_windows_arm64.py and inspect probe(), including its process-tree helper call, logging, output, exit-status, timeout, and launch-failure paths. Add standard-library unit tests using temporary directories and small local commands, then verify logs contain the label, command, relevant output or error text, and exit or timeout information without changing main().

Written by the indexing model from the issue text.

Description

good first issue needs testing

Current evidence

tools/diagnose_windows_arm64.py uses probe() to run a command through the shared process-tree helper, capture stdout/stderr, record native exit codes in decimal and hexadecimal, handle timeouts and launch failures, write a per-probe log, print the same evidence, and return a status used by the higher-level diagnostic flow.

The probe() function itself is portable and can be tested without a Windows ARM64 machine, but its success and failure paths currently have no focused unit coverage.

Scope

  • Add Python unit tests for probe() using temporary directories and small local commands.
  • Cover successful output capture, a nonzero exit code, timeout handling, and an OSError/missing-command path.
  • Assert that the generated log contains the label, command, relevant output/error text, and exit or timeout information.
  • Keep the native ARM64 PE validation, compiler matrix, and LLDB invocation in main() unchanged.

Completion criteria

  • Focused tests run on ordinary CI/development hosts with the Python standard library only.
  • Tests do not require Windows ARM64, LLVM, LLDB, or a Wave compiler build.
  • Existing diagnostic log format remains useful for the native workflow.
Dominant language
Rust
Stars
56
Forks
21
Avg merge
3h 20m
Merged PRs (30d)
66

Getting set up

First steps

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  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.

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