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test: verify diagnostics collection records kubectl failure without aborting

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Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
84/100
Issue type
Bug
Clarity
Clearly specified
Activity status
Active
Tech stack
kubernetes, python
Domain
devops, testing

Research direction

Start with tools/olf/tests/test_diagnostics.py and trace the public collect behavior and its existing mocked Docker failure test. Add a mocked resolver/runner case for unavailable kubectl, then run the focused diagnostics tests. Done when collection does not abort, host-disk.txt and host-memory.txt are written, and at least one Kubernetes diagnostics file explains the failure.

Written by the indexing model from the issue text.

Description

good first issue help wanted
Why

olf diagnostics collect is meant to preserve partial evidence when a command fails. The current tests cover a missing Docker binary but not an unavailable kubectl command.

Scope
  • Add a mocked resolver/runner test under tools/olf/tests/test_diagnostics.py where kubectl is unavailable.
  • Confirm text files for the failed probes contain a useful error and host diagnostics are still written.
  • No real Docker or Kubernetes calls; test the public collect behavior.
Acceptance
  • No uncaught error interrupts the collection.
  • host-disk.txt and host-memory.txt still exist.
  • At least one Kubernetes diagnostics file explains the failure.
Contributor notes
  • Keep this to one focused PR; follow AGENTS.md.
  • No Kubernetes cluster should be necessary unless specifically mentioned.
  • For Python changes run uv run --project tools/olf pytest tools/olf/tests and uv run --project tools/olf ruff check tools/olf (or narrower tests while iterating).
Dominant language
Python
Stars
26
Forks
6
Avg merge
12h 26m
Merged PRs (30d)
162

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