[release/26.06] Remove stale import of deleted assert_collect_raises

[madsbk]

Description

PR #22048 (merged today) added the new test_hconcat_strict_different_heights test, which imports assert_collect_raises. However, PR #22535 (also merged today) removed that helper.

The two PRs landed on release/26.06 without the conflict being noticed.

On main, test_hconcat.py does not contain the strict-mode test, so the issue is limited to release/26.06.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Enterprise

Run ID: a3cdb814-83c2-469c-85d7-091219ce66a3

📥 Commits

Reviewing files that changed from the base of the PR and between 2151706 and 0b189cd.

📒 Files selected for processing (1)

• python/cudf_polars/tests/test_hconcat.py

🚧 Files skipped from review as they are similar to previous changes (1)

• python/cudf_polars/tests/test_hconcat.py

---

📝 Walkthrough

Summary by CodeRabbit

• Tests
  • Strengthened tests for horizontal concatenation with mismatched heights by adding explicit exception checks that cover both collection execution modes.
  • Removed reliance on a prior test-helper assertion and streamlined imports to simplify test validation of error handling.

Walkthrough

Test file test_hconcat.py removes the assert_collect_raises import and replaces its usage in test_hconcat_strict_different_heights with explicit pytest.raises(pl.exceptions.ShapeError) checks for both standard and GPU-engine collect calls.

Changes

Test assertion refactoring

Layer / File(s)	Summary
Remove legacy assertion helper and update test python/cudf_polars/tests/test_hconcat.py	Import statement removes assert_collect_raises dependency; test assertions rewritten as two explicit pytest.raises(pl.exceptions.ShapeError) blocks covering both q.collect() and q.collect(engine=pl.GPUEngine(executor="in-memory", raise_on_fail=True)).

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Possibly related PRs

• rapidsai/cudf#22535: Main PR that updates the same test file to stop using the legacy assert_collect_raises helper and replace it with explicit pytest.raises.

Suggested labels

improvement

Suggested reviewers

• nirandaperera
• wence-
• mroeschke

🚥 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%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main change: removing a stale import of a deleted helper function.
Description check	✅ Passed	The description clearly explains the context and rationale for the fix, detailing which PRs caused the issue.
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.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

---

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[madsbk]

/merge

[mroeschke]

/merge