TEST: Reuse DataFrame dot test inputs

[vyasr]

Description

Reuses the existing left-hand DataFrame inputs while retaining every right-hand operand and pandas comparison in the DataFrame dot test matrix.

Checklist

• I am familiar with the Contributing Guidelines.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.

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ℹ️ Recent review info

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📥 Commits

Reviewing files that changed from the base of the PR and between e78c254 and a102d3d.

📒 Files selected for processing (1)

• python/cudf/cudf/tests/dataframe/test_binops.py

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📝 Summary

Summary by CodeRabbit

• Tests
  • Refactored dot-product test coverage to use shared operand factories.
  • Continued validating consistent results across DataFrames, Series, NumPy arrays, lists, pandas, and cuDF.

Walkthrough

The dot-product test now uses a shared collection of operand factories. It tests DataFrame, Series, NumPy array, and list operands while preserving pandas-versus-cuDF result comparisons.

Changes

Dot-product test coverage

Layer / File(s)	Summary
Shared operand factories and test execution python/cudf/cudf/tests/dataframe/test_binops.py	DOT_OTHER_FACTORIES defines dot-product operand factories. test_binops_dot iterates over the factories internally and retains pandas-versus-cuDF equality checks.

Priority: ⬇️ Low

Estimated code review effort: 2 (Simple) | ~10 minutes

Suggested reviewers: galipremsagar, bdice

Merge Risk: ⚪ Minimal · up to a102d

The dot-product test refactor retains coverage and result comparisons across the supported operand types, with no actionable merge risk identified.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 3 functions across 1 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description check	✅ Passed	The description accurately explains that the PR reuses left-hand DataFrame inputs while preserving right-hand operands and pandas comparisons in the dot-product test matrix.
Title check	✅ Passed	The title clearly identifies the main change: reusing inputs in the DataFrame dot-product test.
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.

• Fix all pre-merge checks with AI

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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