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fix(vhostmd): allign ResourceProcessorLimit metric type with KubeVirt#5490

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fix(vhostmd): allign ResourceProcessorLimit metric type with KubeVirt#5490
geetikakay wants to merge 1 commit into
RedHatQE:mainfrom
geetikakay:vm_metric

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@geetikakay

@geetikakay geetikakay commented Jul 3, 2026

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What this PR does / why we need it:

KubeVirt commit c7d5c82f26 removed NrVirtCpu from DomainStats because it was redundant. The scraper already loops over vmStats.Vcpu for TotalCPUTime, so it can count online vCPUs in the same pass instead of carrying a separate field from libvirt.onlineVcpus is int → XML type="int64"

Which issue(s) this PR fixes:
Special notes for reviewer:
jira-ticket:

seen in recent CI runs

Summary by CodeRabbit

  • Tests
    • Updated metric validation to match the current metric type expected during virtual machine downward metrics checks.

Signed-off-by: Geetika Kapoor <gkapoor@redhat.com>
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Review Change Stack

📝 Walkthrough

Walkthrough

This change updates a single expected value in a test file, changing the expected metric type for ResourceProcessorLimit from uint64 to int64 in the EXPECTED_METRICS dictionary used by the downward metrics virtio serial port test.

Changes

Test expectation fix

Layer / File(s) Summary
Update expected metric type
tests/infrastructure/vhostmd/test_downwardmetrics_virtio.py
EXPECTED_METRICS entry for ResourceProcessorLimit changed from uint64 to int64, affecting the equality assertion in test_downward_metrics_virtio_serial_port.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Related issues: None found in the provided context.

Related PRs: None found in the provided context.

Suggested labels: none

Suggested reviewers: none

Poem:
A single digit's type took flight,
From "uint" to "int," now set right,
One line, one change, no fuss, no fright—
A rabbit hops through tests tonight. 🐇


Caution

Pre-merge checks failed

Please resolve all errors before merging. Addressing warnings is optional.

  • Ignore

❌ Failed checks (1 error)

Check name Status Explanation Resolution
Description check ❌ Error Template sections are present, but the issue and reviewer-note sections are empty and jira-ticket is not a valid full URL or NONE. Add the missing issue links, reviewer notes, and a valid jira-ticket value (full URL or NONE), and clarify the PR summary.
✅ Passed checks (4 passed)
Check name Status Explanation
Title check ✅ Passed The title is concise, under 120 chars, and matches the metric-type alignment change.
Linked Issues check ✅ Passed Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check ✅ Passed Check skipped because no linked issues were found for this pull request.
Stp Link Required ✅ Passed Only an existing test module changed; no new test files or test functions were added, so the STP/Jira link rule is not triggered.
✨ Finishing Touches
🧪 Generate unit tests (beta)
  • Create PR with unit tests

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🔥 Problems

Linked repositories: Your configuration references 1 linked repositories, but your current plan allows 0. Analyzed ``, skipped RedHatQE/openshift-virtualization-tests-design-docs.


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New container for quay.io/openshift-cnv/openshift-virtualization-tests:pr-5490 published

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Test execution plan request details

CRITICAL: You MUST post an inline review comment on the first changed line of the first file.
The inline comment should contain the full Test Execution Plan (smoke decision, gating decision, and specific affected tests).
Do NOT submit a blocking review event (REQUEST_CHANGES/APPROVE).
Post a single inline PR comment on Files Changed (non-blocking COMMENT flow).

As an expert software testing engineer, analyze all modified files in this PR and create a targeted test execution plan.
You will post an inline review comment with the test execution plan on the first changed file.
If you fail to run or post a comment, retry.

Analysis Requirements:

  1. Examine code changes in each modified file

  2. Identify affected code paths, functions, and classes

  3. Analyze pytest-specific elements: fixtures (scope, dependencies), parametrization, markers, conftest changes

  4. Trace test dependencies through imports, shared utilities, fixture inheritance, fixture teardown, and yield from cleanup in conftest

  5. Detect new tests introduced in the PR

  6. Utilities and libs impact (when utilities/ or libs/ changes):
    You MUST use shell scripts (rg, git diff) to trace the full impact.
    Follow these sub-steps in order:

    6a. Identify modified symbols: For each changed file under utilities/ or libs/,
    list every modified function or method.
    Example: git diff HEAD~1 --unified=0 -- utilities/hco.py | grep '^[+-]def '

    6b. Find direct callers: Search tests and conftest for each symbol from 6a.
    Example: rg -l 'get_hco_version' tests/

    6c. Trace fixture teardown and cleanup: Find fixtures that reach
    the modified symbol through yield from or context-manager wrappers.
    Example: rg -l 'yield from.*enable_common_boot|def.*enable_common_boot' tests/

    6d. Trace same-file callers: In each changed file, find other functions
    whose body calls a modified symbol (including code after yield
    in @contextmanager helpers).
    Example: rg 'get_hco_version|enable_common_boot' utilities/hco.py

    6e. Expand transitively: If function A calls modified B, then
    tests/fixtures that call A are affected — even when the test body
    never imports B directly.

    Do NOT limit impact to tests that import the modified symbol only.

  7. Smoke test impact: Intersect the affected set from step 6 with smoke-marked tests.
    Run: rg -l '@pytest.mark.smoke' tests/
    VERIFY the above command returned actual file paths before concluding False.
    Set True if either condition is met:

    • a smoke-marked file appears in the affected set from 6b-6e, OR
    • any conftest.py in the smoke test's parent-directory hierarchy (up to repo root)
      imports or calls a modified utilities/libs symbol — including autouse fixtures
      that depend on modified functions. ALL tests in that directory and below are affected.
      Example check: for each smoke_file, scan dirname(smoke_file)/conftest.py,
      dirname(dirname(smoke_file))/conftest.py, etc. for modified symbol imports
      and autouse fixtures that depend on modified symbols.
  8. Gating test impact: Intersect the affected set from step 6 with gating-marked tests.
    Run: rg -l '@pytest.mark.gating' tests/
    Set True if a gating-marked file also appears in the affected set from 6b-6e.
    Utilities/libs changes often affect gating tests without affecting smoke tests.
    Do NOT stop analysis after concluding Run smoke tests: False.

Output rules:
Do NOT include analysis step numbers (1-8) in your visible output.

Your deliverable:
Your inline informational comment will be based on the following requirements:

Test Execution Plan

  • Run smoke tests: True / False — If True, state the dependency path (test → fixture → changed symbol). True ONLY with a verified path.
  • Run gating tests: True / False — If True, state the dependency path. True if any gating-marked test is in the affected set.
  • Affected tests to run (required when utilities/, libs/, or shared conftest changes — list concrete paths even when smoke is False)

Use these formats:

  • path/to/test_file.py - When the entire test file needs verification
  • path/to/test_file.py::TestClass::test_method - When specific test(s) needed
  • path/to/test_file.py::test_function - When specific test(s) needed
  • -m marker - When a marker covers multiple affected tests (e.g. -m gating only if ALL gating tests in scope need run)
  • Tag each listed test or group with its marker when not obvious, e.g. (gating) or (smoke)

Real test commands (MANDATORY when changes affect session/runtime code):

When the affected code runs at session/collection time (conftest fixtures, pytest plugins,
config hooks, session-scoped setup) or modifies runtime behavior that unit tests mock away,
you MUST include concrete pytest commands the PR author must run on a real cluster
to verify the change works end-to-end. Include:

  • A command for the error/fix path (the scenario the PR fixes)
  • A command for the happy path (regression: the normal case still works)
  • Use lightweight tests (e.g., --collect-only for startup failures,
    a single small test for runtime behavior)
    If the PR only changes test logic (not utilities/libs/conftest), the affected test
    paths themselves serve as the real test commands — no separate section needed.

Example output for a session-startup fix:

**Real tests (cluster required)**
Error path (the fix):
`pytest tests/storage/.../test_foo.py --storage-class-matrix=nonexistent-sc --collect-only`
Expected: ValueError with clear message, not IndexError

Happy path (regression):
`pytest tests/storage/.../test_foo.py --storage-class-matrix=<valid-sc> -k test_bar`
Expected: session starts normally

Guidelines:

  • Include tests affected directly OR via fixture setup/teardown, yield from cleanup, or transitive utility call chains (caller calls modified helper)
  • Use a full file path only if ALL tests in that file require verification
  • Use file path + test name when only specific tests use an affected fixture or utility wrapper (preferred for partial file impact)
  • If a test marker can cover multiple files/tests, provide the marker
  • Balance coverage vs over-testing - Keep descriptions minimal
  • Example: if leaf helper foo() changes, include tests whose fixture teardown calls wrapper bar() where bar() calls foo(), even when the test body only imports an unrelated symbol from the same utilities module

Hardware-Related Checks (SR-IOV, GPU, DPDK):

When PR modifies fixtures for hardware-specific resources:

  • Collection Safety: Fixtures MUST have existence checks (return None when hardware unavailable)
  • Test Plan: MUST verify both WITH and WITHOUT hardware:
    • Run affected tests on cluster WITH hardware
    • Verify collection succeeds on cluster WITHOUT hardware

CRITICAL WORKFLOW COMPLETION RULES:

When responding to this test execution plan request, you MUST follow these rules EXACTLY:

  1. YOUR ONLY DELIVERABLE: Post one non-blocking inline comment containing the test execution plan on the first changed line
  2. THEN STOP IMMEDIATELY - Do NOT generate any additional response
  3. FALLBACK ONLY: If inline comment API calls fail after retrying, post as a regular PR comment
  4. SILENCE = SUCCESS: After successfully submitting the review, your task is complete. No confirmation needed.

ABSOLUTE PROHIBITIONS (violating these creates empty/meaningless reviews):

  • ❌ Do NOT post acknowledgment messages like "Test execution plan posted", "Review posted successfully", "I've successfully posted"
  • ❌ Do NOT mention review IDs, URLs, or confirmation of posting in the PR thread
  • ❌ Do NOT add any follow-up comments after submitting the review
  • ❌ Do NOT reply to confirm task completion
  • ❌ Do NOT explain what you did - just do it and stop

Remember: The pull request review is visible to users. Additional comments are redundant noise.

CRITICAL — Verification rules for smoke and gating decisions:
- For each True decision, you must have traced a concrete path: test file → fixture → utility function → modified symbol.
- Do NOT assume impact based on scope, file proximity, or infrastructure-sounding names.
Only set True when you trace a concrete path through steps 6a-6e, then 7 or 8.
WRONG: "utilities/hco.py changed → run smoke" (no traced dependency path)
WRONG: "Run smoke tests: False" with no affected-test list when gating tests use the changed utility
RIGHT: "Run smoke tests: False, Run gating tests: True" plus tests/.../test_foo.py::TestBar::test_baz (gating)
RIGHT: "Smoke test X uses fixture Y → wrapper Z → changed function W in utilities/hco.py"

Comment thread tests/infrastructure/vhostmd/test_downwardmetrics_virtio.py
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Tip

For best results, initiate chat on the files or code changes.

🧩 Analysis chain

🏁 Script executed:

#!/bin/bash
set -euo pipefail

gh pr diff 5490 -R RedHatQE/openshift-virtualization-tests

echo "---- markers in file ----"
fd test_downwardmetrics_virtio.py -x cat -n {}

echo "---- smoke/gating markers ----"
rg -n '`@pytest.mark`.(smoke|gating)' tests/infrastructure/vhostmd/ || true

echo "---- conftest hierarchy ----"
fd conftest.py tests/infrastructure/vhostmd tests/infrastructure -x echo {}

Length of output: 9821


🏁 Script executed:

#!/bin/bash
set -euo pipefail

COMMENT_BODY=$(cat <<'EOF'
**Test Execution Plan**

- **Run smoke tests: False** — No smoke-marked tests found in `tests/infrastructure/vhostmd/`, and no `utilities/`/`libs/` symbols were modified.
- **Run gating tests: False** — No gating-marked tests found in this path; change is confined to test-data assertion only.
- **Affected tests to run**
  - `tests/infrastructure/vhostmd/test_downwardmetrics_virtio.py::test_downward_metrics_virtio_serial_port` — directly asserts against the updated `EXPECTED_METRICS` set (line 34: `ResourceProcessorLimit` type `uint64` → `int64`).
  - `test_downward_metrics_virtio_serial_port_default` is unaffected (does not reference `EXPECTED_METRICS`).

**Real tests (cluster required)**
Fix path (verifies alignment with KubeVirt's updated `DomainStats`):
`pytest tests/infrastructure/vhostmd/test_downwardmetrics_virtio.py::test_downward_metrics_virtio_serial_port`
Expected: collected `ResourceProcessorLimit` metric type is `int64` and matches `EXPECTED_METRICS`, no assertion failure.

Happy path (regression, feature-gate-disabled scenario):
`pytest tests/infrastructure/vhostmd/test_downwardmetrics_virtio.py::test_downward_metrics_virtio_serial_port_default`
Expected: `UnprocessibleEntityError` raised as before (unaffected by this change).
EOF
)

# Get PR head commit SHA and first changed file/line
PR_JSON=$(gh pr view 5490 -R RedHatQE/openshift-virtualization-tests --json headRefOid)
COMMIT_SHA=$(echo "$PR_JSON" | jq -r '.headRefOid')

gh api \
  repos/RedHatQE/openshift-virtualization-tests/pulls/5490/comments \
  -f body="$COMMENT_BODY" \
  -f commit_id="$COMMIT_SHA" \
  -f path="tests/infrastructure/vhostmd/test_downwardmetrics_virtio.py" \
  -F line=34 \
  -f side="RIGHT"

Length of output: 5980


Inline test execution plan comment has been posted on line 34 of tests/infrastructure/vhostmd/test_downwardmetrics_virtio.py.

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