loki/docs/testing/notes/ITERATION-3-NOTES.md

Iteration 3 — Test Implementation Notes

Plan file addressed

docs/testing/plans/03-sessions.md

Tests created

src/config/session.rs (15 new tests)

Test name	What it verifies
session_default_is_empty	Default session is empty, no name, no role, not dirty
session_new_from_ctx_captures_save_session	new_from_ctx captures name, empty, not dirty
session_set_role_captures_role_info	set_role copies model_id, temperature, role_name, marks dirty
session_clear_role	clear_role removes role_name
session_guard_empty_passes_when_empty	guard_empty OK when empty
session_needs_compression_threshold	Empty session doesn't need compression
session_needs_compression_returns_false_when_compressing	Already compressing → false
session_needs_compression_returns_false_when_threshold_zero	Zero threshold → false
session_set_compressing_flag	set_compressing toggles flag
session_set_save_session_this_time	Doesn't panic
session_save_session_returns_configured_value	save_session get/set roundtrip
session_compress_moves_messages	compress moves messages to compressed, adds system
session_is_not_empty_after_compress	Session with compressed messages is not empty
session_need_autoname_default_false	Default session doesn't need autoname
session_set_autonaming_doesnt_panic	set_autonaming safe without autoname

src/config/request_context.rs (4 new tests, 11 total)

Test name	What it verifies
exit_session_clears_session	exit_session removes session from ctx
empty_session_clears_messages	empty_session keeps session but clears it
maybe_compress_session_returns_false_when_no_session	No session → no compression
maybe_autoname_session_returns_false_when_no_session	No session → no autoname

Total: 19 new tests (86 → 105)

Bugs discovered

None. Session behavior matches between old and new code.

Observations for future iterations

1. Session::new_from_ctx and Session::load_from_ctx have #[allow(dead_code)] annotations — they were bridge methods. Should verify if they're still needed or if the old Session::new and Session::load (which take &Config) should be cleaned up in a future pass.

2. The compress method moves messages to compressed_messages and adds a single system message with the summary. This is a critical behavioral contract — if the summary format changes, sessions could break.

3. needs_compression uses self.compression_threshold (session- level) with fallback to the global threshold. This priority (session > global) is important behavior.

4. Session carry-over (the "incorporate last Q&A?" prompt) happens inside use_session which is async and involves user interaction (inquire::Confirm). Can't unit test this — needs integration test or manual verification.

5. The extract_role test for session-active case should verify that session.to_role() is returned. Added note to plan 02.

Plan file updates

Updated 03-sessions.md to mark completed items.

Next iteration

Plan file 04: Agents — agent init, tool compilation, variables, lifecycle, MCP, RAG, auto-continuation.