codeant-ai-for-open-source[bot] commented on code in PR #41946:
URL: https://github.com/apache/superset/pull/41946#discussion_r3565553430
##########
tests/unit_tests/connectors/sqla/models_test.py:
##########
@@ -542,6 +544,91 @@ def
test_fetch_metadata_with_comment_field_existing_columns(
assert columns_by_name["name"].description == "Updated name description"
+def test_fetch_metadata_sets_expression_for_expanded_nested_columns(
+ mocker: MockerFixture,
+) -> None:
+ """
+ Test that fetch_metadata uses the `expression` hint provided by the db
engine
+ spec (e.g. Trino's expansion of nested `ROW` columns via `expand_rows`) to
set
+ the physical `TableColumn.expression`.
+
+ Without this, a nested column like `metadata.uuid` would have no
expression,
+ causing SQLAlchemy to render the whole dotted `column_name` as a single
quoted
+ identifier (`"metadata.uuid"`), which Trino rejects, instead of the correct
+ per-segment quoting (`"metadata"."uuid"`).
+
+ See: https://github.com/apache/superset/issues/27034
+ """
+ # Mock database
+ database: MagicMock = mocker.MagicMock()
+ database.get_metrics.return_value = []
+
+ # Mock db_engine_spec
+ mock_db_engine_spec = mocker.MagicMock()
Review Comment:
**Suggestion:** Add an explicit type annotation for this mock object
variable to keep new local variables type-hinted. [custom_rule]
**Severity Level:** Minor ๐งน
<details>
<summary><b>Why it matters? โญ </b></summary>
This new local variable is introduced without a type annotation, and it is a
Python variable that can be annotated. This matches the type-hint rule
violation.
</details>
<details>
<summary><b>Rule source ๐ </b></summary>
.cursor/rules/dev-standard.mdc (line 28)
</details>
[](https://app.codeant.ai/fix-in-ide?tool=cursor&prompt_id=8ab8026e55f54e0fb2d7122c65ca0497&service=github&base_url=https%3A%2F%2Fgithub.com&org=apache&repo=apache%2Fsuperset)
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<details>
<summary><b>Prompt for AI Agent ๐ค </b></summary>
```mdx
This is a comment left during a code review.
**Path:** tests/unit_tests/connectors/sqla/models_test.py
**Line:** 567:567
**Comment:**
*Custom Rule: Add an explicit type annotation for this mock object
variable to keep new local variables type-hinted.
Validate the correctness of the flagged issue. If correct, How can I resolve
this? If you propose a fix, implement it and please make it concise.
Once fix is implemented, also check other comments on the same PR, and ask
user if the user wants to fix the rest of the comments as well. if said yes,
then fetch all the comments validate the correctness and implement a minimal fix
```
</details>
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