[cofin]

Summary

Adds a clientless Snowflake-compatible container service (snowflake_service, embucket_service, SnowflakeService) backed by embucket/embucket:latest on HTTP port 3000, using stdlib urllib.request for readiness probing and /queries/v1/query-request SQL execution without requiring snowflake-connector-python in the base package.

Key Changes

Snowflake-Compatible Emulator (pytest_databases.docker.snowflake)

• Embucket Service (snowflake_service, embucket_service, SnowflakeService): Starts embucket/embucket:latest on port 3000 and exposes endpoint, connection_kwargs (for snowflake.connector.connect), and query().
• Stdlib HTTP Readiness & SQL REST Execution: Adds check_snowflake_health (probing /health with fallback to /v1/metastore/databases) and query_snowflake_emulator (executing SQL over /queries/v1/query-request via urllib.request).
• Worker Isolation: Supports database (worker-scoped snowflake_schema) and server (per-worker container) isolation modes via xdist_snowflake_isolation_level.

Testing, Documentation & CI

• Unit & Contract Coverage: Adds tests/test_snowflake.py verifying clientless module imports, health probing, REST SQL execution, and fixture defaults.
• Documentation & Selective CI: Adds docs/supported-databases/snowflake.rst and registers snowflake in .github/ci/provider-groups.json.

Closes #159

[codecov-commenter]

Codecov Report

❌ Patch coverage is 76.36364% with 26 lines in your changes missing coverage. Please review.
✅ Project coverage is 3.00%. Comparing base (2857485) to head (f04436d).

Files with missing lines	Patch %	Lines
src/pytest_databases/docker/snowflake.py	76.36%	21 Missing and 5 partials ⚠️

Additional details and impacted files

@@                   Coverage Diff                   @@
##           feat/floci-emulators    #170      +/-   ##
=======================================================
- Coverage                  4.54%   3.00%   -1.55%     
=======================================================
  Files                        30      31       +1     
  Lines                      3519    3629     +110     
  Branches                    287     293       +6     
=======================================================
- Hits                        160     109      -51     
- Misses                     3354    3515     +161     
  Partials                      5       5              

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.