[TST][rust-log-service]: add database_name parameter to log service test helpers

[rescrv]

Description of changes

Refactor test helper functions to accept a db_name parameter instead of
using hardcoded "test_db" strings:

• push_log_to_server
• validate_log_on_server
• get_enum_offset_on_server
• update_compact_offset_on_server
• validate_dirty_log_on_server
• garbage_collect_unused_logs
• test_push_pull_logs, test_dirty_logs, test_fork_logs, etc.

Add new k8s mcmr integration test variants that use "topo#dbname" as the
database name pattern to verify the log service works correctly with
topology-prefixed database names used in multi-cluster deployments.

NB: There is no switching of behavior per topo/mcmr; this is scaffold.

Test plan

CI

Migration plan

N/A

Observability plan

N/A

Documentation Changes

N/A

Co-authored-by: AI

[github-actions]

Reviewer Checklist

Please leverage this checklist to ensure your code review is thorough before approving

Testing, Bugs, Errors, Logs, Documentation

• Can you think of any use case in which the code does not behave as intended? Have they been tested?
• Can you think of any inputs or external events that could break the code? Is user input validated and safe? Have they been tested?
• If appropriate, are there adequate property based tests?
• If appropriate, are there adequate unit tests?
• Should any logging, debugging, tracing information be added or removed?
• Are error messages user-friendly?
• Have all documentation changes needed been made?
• Have all non-obvious changes been commented?

System Compatibility

• Are there any potential impacts on other parts of the system or backward compatibility?
• Does this change intersect with any items on our roadmap, and if so, is there a plan for fitting them together?

Quality

• Is this code of a unexpectedly high quality (Readability, Modularity, Intuitiveness)

[propel-code-bot]

These adjustments ensure every helper call site now passes the intended database identifier, and the new MCMR variants run alongside the existing database-name scenarios to confirm compatibility with topology-prefixed naming.

Affected Areas

• rust/log-service/src/lib.rs (tests module)

This summary was automatically generated by @propel-code-bot

[propel-code-bot]

[Logic] This test variant is intended to verify behavior with topology-prefixed database names ("topo#dbname"), but it currently uses the hardcoded "test_db" string. Please update all 5 occurrences in this function to use "topo#dbname".

Additionally, since this test significantly duplicates the logic of test_k8s_integration_update_collection_log_offset_never_moves_backwards, consider extracting the common logic into a shared helper function that accepts db_name as a parameter.

Context for Agents

This test variant is intended to verify behavior with topology-prefixed database names (`"topo#dbname"`), but it currently uses the hardcoded `"test_db"` string. Please update all 5 occurrences in this function to use `"topo#dbname"`.

Additionally, since this test significantly duplicates the logic of `test_k8s_integration_update_collection_log_offset_never_moves_backwards`, consider extracting the common logic into a shared helper function that accepts `db_name` as a parameter.

File: rust/log-service/src/lib.rs
Line: 4718

[blacksmith-sh]

Found 1 test failure on Blacksmith runners:

Failure

Test	View Logs
garbage_collector/ garbage_collector_component::tests::test_k8s_integration_gc_v2_and_database_hard_delete	View Logs