infra: Remove basic preference tests for centos

[RoniKishner]

What this PR does / why we need it:

Remove tier3 tests for centos preference - the centos tests are covered by tests/infrastructure/instance_types/supported_os/test_centos_os.py.

Which issue(s) this PR fixes:

Reduce test run time and repetitive coverage

Special notes for reviewer:

The RHEL test also have RHEL-7 which prevents from those tests to be removed, this would take some investigation to how we can remove those as well.

jira-ticket:

NONE

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ℹ️ Recent review info

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Run ID: 76d95214-2aff-45e6-8d10-39f432ef72be

📥 Commits

Reviewing files that changed from the base of the PR and between 94390a0 and 9490e9d.

📒 Files selected for processing (1)

• tests/infrastructure/instance_types/test_common_vm_preference.py

💤 Files with no reviewable changes (1)

• tests/infrastructure/instance_types/test_common_vm_preference.py

---

Summary by CodeRabbit

• Tests
  • Updated VM preference test parameters to ensure comprehensive validation coverage.

Walkthrough

This PR updates the test parametrization for VM preference testing by replacing the "centos" cluster preference with "rhel" in the TestCommonVmPreference test class. The change maintains the existing test structure and Polarion marks while swapping the cluster preference parameter.

Changes

Test Parameter Update

Layer / File(s)	Summary
Cluster preference parametrization tests/infrastructure/instance_types/test_common_vm_preference.py	The @pytest.mark.parametrize decorator for cluster_preferences replaces the centos entry with rhel, each with corresponding Polarion marks, while neighboring entries like unique remain unchanged.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Possibly related issues

• infra: Remove basic preference tests for centos - 5154 #5155: Both changes affect the centos cluster preference test parameter, directly corresponding to an issue to remove centos basic preference tests.

Suggested labels

verified, size/L, can-be-merged

Suggested reviewers

• dshchedr
• rnetser
• vsibirsk
• mijankow

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main change: removing centos preference tests from the parametrize inputs.
Description check	✅ Passed	The PR description includes all required sections with substantive content explaining the changes, rationale, and relevant notes.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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.

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[RoniKishner]

/verified

[openshift-virtualization-qe-bot-3]

@coderabbitai

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"

[coderabbitai]

Tip

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

🧩 Analysis chain

🏁 Script executed:

#!/bin/bash
# Get the PR diff to find the first changed line
gh pr diff 5154 --repo RedHatQE/openshift-virtualization-tests

# Check if modified file has smoke or gating markers
echo "=== Checking for smoke/gating markers in modified file ==="
rg '`@pytest.mark.smoke`|`@pytest.mark.gating`' tests/infrastructure/instance_types/test_common_vm_preference.py

echo "=== Check for smoke markers in instance_types directory ==="
rg -l '`@pytest.mark.smoke`' tests/infrastructure/instance_types/

echo "=== Check for gating markers in instance_types directory ==="
rg -l '`@pytest.mark.gating`' tests/infrastructure/instance_types/

echo "=== Get file content around changed lines ==="
cat tests/infrastructure/instance_types/test_common_vm_preference.py

echo "=== Get PR files changed and line numbers ==="
gh api repos/RedHatQE/openshift-virtualization-tests/pulls/5154/files --jq '.[] | {filename: .filename, patch: .patch}'

Length of output: 8098

---

🏁 Script executed:

#!/bin/bash
# Get PR head SHA
HEAD_SHA=$(gh api repos/RedHatQE/openshift-virtualization-tests/pulls/5154 --jq '.head.sha')
echo "Head SHA: $HEAD_SHA"

# Post inline review comment at the first changed (deleted) line - patch position 4
gh api \
  repos/RedHatQE/openshift-virtualization-tests/pulls/5154/reviews \
  --method POST \
  --field event="COMMENT" \
  --field commit_id="$HEAD_SHA" \
  --field body="" \
  --field "comments[][path]=tests/infrastructure/instance_types/test_common_vm_preference.py" \
  --field "comments[][position]=4" \
  --field "comments[][body]=**Test Execution Plan**

**Run smoke tests: False**
No traced dependency path — the removed \`centos\` parametrize entry belongs to \`TestCommonVmPreference::test_common_vm_preference_linux\` (marked \`@pytest.mark.tier3\`), which has no connection to any smoke-marked test.

**Run gating tests: False**
The \`@pytest.mark.gating\` test in this file (\`test_common_preferences_vendor_labels\`) is unaffected — it tests vendor labels on all cluster preferences and has no dependency on the centos parametrize entry being removed.

**Affected tests to run**
The only affected test is the one being removed:
- \`tests/infrastructure/instance_types/test_common_vm_preference.py::TestCommonVmPreference::test_common_vm_preference_linux[centos]\` (tier3) — **deleted**, no longer needs to be run.

No regression risk from this change. CentOS coverage continues via \`tests/infrastructure/instance_types/supported_os/test_centos_os.py\`."

Length of output: 3342

---

---

[openshift-virtualization-qe-bot-3]

/retest all

Auto-triggered: Files in this PR were modified by merged PR #5152.

Overlapping files

tests/infrastructure/instance_types/test_common_vm_preference.py

[geetikakay]

felt it's worth keeping because we don't check desktop versions anywhere else .

[RoniKishner]

Acknowledged. closing the PR