Add tests for Bingo Oracle

[Copilot]

Generic request

• PR name follows the pattern #1234 – issue name
• branch name does not contain '#'
• base branch (master or release/xx) is correct
• PR is linked with the issue
• task status changed to "Code review"
• code follows product standards
• regression tests updated

For release/xx branch

• backmerge to master (or newer release/xx) branch is created

Optional

• unit-tests written
• documentation updated

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No tests existed for Bingo Oracle. This adds the Oracle database adapter to the existing multi-backend test framework and a corresponding CI job.

Oracle DB Adapter (bingo/tests/dbc/OracleDB.py)

New SQLAdapter subclass mirroring PostgresSQL.py, with Oracle-specific differences:

• Bind parameters via SQLAlchemy text() with :param syntax instead of psycopg2's %(param)s
• Single-row inserts (Oracle lacks multi-row VALUES syntax)
• INDEXTYPE IS bingo.MoleculeIndex instead of USING bingo_idx
• No CREATE SCHEMA IF NOT EXISTS (Oracle schemas = users)
• Oracle function names: bingo.Exact(), bingo.Sub(), bingo.Sim(), bingo.AutoAAM(), etc. with FROM dual for scalar queries

Test Infrastructure

• conftest.py: Oracle setup/teardown in db fixture — creates tables, imports data, creates indices, drops on cleanup
• db_config.ini: Added [oracle] section (localhost:1521/XEPDB1, user=test)
• base.py: Oracle config loading (was None), oracle+oracledb dialect, env var overrides (DB_ORACLE_HOST, DB_POSTGRES_HOST) for CI
• requirements.txt: Added oracledb==3.4.2

CI Workflow (indigo-ci.yaml)

New test_bingo_oracle_linux_x86_64 job:

services:
  oracle:
    image: gvenzl/oracle-xe:21-slim

• Depends on build_bingo_oracle_linux_x86_64
• Installs Oracle Instant Client + sqlplus
• Runs bingo-oracle-install.sh against the service container
• Creates test user with grants on bingo.MangoPackage / bingo.RingoPackage
• Runs pytest -s --tb=no --db oracle

Original prompt

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This section details on the original issue you should resolve

<issue_title>Add tests for Bingo Oracle</issue_title>
<issue_description>Background
Currently there are no tests covering Bingo Oracle. It's needed to add them and the corresponding step to Indigo CI.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Add tests for Bingo Oracle #1937

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