Abhiiishek44 opened a new pull request, #41975:
URL: https://github.com/apache/superset/pull/41975
### SUMMARY
Fixes BigQuery metadata operations resolving datasets against the
Application Default Credentials project instead of the project configured in
the connection URI.
`BigQueryEngineSpec._get_client` previously created `bigquery.Client`
without specifying a project. When the credentials project differed from the
project in a connection such as `bigquery://data-project`, unqualified BigQuery
table references were resolved against the credentials project and could return
a dataset-not-found error.
This change:
- Reads the project from `engine.url.host`.
- Passes that project to `bigquery.Client` for both service-account
credentials and Application Default Credentials.
- Adds focused unit coverage for both authentication paths.
Fixes #41906
### BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF
Not applicable. This is a backend-only change.
### TESTING INSTRUCTIONS
Automated tests:
```bash
python -m pytest \
tests/unit_tests/db_engine_specs/test_bigquery.py \
-k "get_client_uses_uri_project" \
-vv
```
Result:
```text
2 passed, 38 deselected
```
Code-quality checks:
```bash
python -m pre_commit run --files \
superset/db_engine_specs/bigquery.py \
tests/unit_tests/db_engine_specs/test_bigquery.py
```
Result:
```text
All applicable hooks passed.
```
### ADDITIONAL INFORMATION
- [x] Has associated issue: #41906
- [ ] Required feature flags:
- [ ] Changes UI
- [ ] Includes DB Migration
- [ ] Introduces new feature or API
- [ ] Removes existing feature or API
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