loki/docs/testing/notes/ITERATION-2-NOTES.md

Iteration 2 — Test Implementation Notes

Plan file addressed

docs/testing/plans/02-roles.md

Tests created

src/config/role.rs (12 new tests, 15 total)

Test name	What it verifies
role_new_parses_prompt	Role::new extracts prompt text
role_new_parses_metadata	Metadata block parses model, temperature, top_p
role_new_parses_enabled_tools	enabled_tools from metadata
role_new_parses_enabled_mcp_servers	enabled_mcp_servers from metadata
role_new_no_metadata_has_none_fields	No metadata → all optional fields None
role_builtin_shell_loads	Built-in "shell" role loads
role_builtin_code_loads	Built-in "code" role loads
role_builtin_nonexistent_errors	Non-existent built-in → error
role_default_has_empty_fields	Default role has empty name/prompt
role_set_model_updates_model	set_model() changes the model
role_set_temperature_works	set_temperature() changes temperature
role_export_includes_metadata	export() includes metadata and prompt

src/config/request_context.rs (5 new tests, 7 total)

Test name	What it verifies
use_role_obj_sets_role	use_role_obj sets role on ctx
exit_role_clears_role	exit_role clears role from ctx
use_prompt_creates_temp_role	use_prompt creates TEMP_ROLE_NAME role
extract_role_returns_standalone_role	extract_role returns active role
extract_role_returns_default_when_nothing_active	extract_role returns default role

Total: 17 new tests (69 → 86)

Bugs discovered

None. Role parsing behavior matches between old and new code.

Observations for future iterations

1. retrieve_role (which calls Model::retrieve_model) can't be easily unit-tested without a real client config. It depends on having at least one configured client. Deferred to integration testing or plan 08 (RequestContext scope transitions).

2. The use_role async method (which calls rebuild_tool_scope) requires async test runtime and MCP infrastructure. Deferred to plan 05 (MCP lifecycle) and 08 (RequestContext).

3. use_role_obj correctly rejects when agent is active — tested implicitly through the error path, but creating a mock Agent is complex. Noted for plan 04 (agents).

4. The extract_role priority order (session > agent > role > default) is important behavioral contract. Tests verify the role and default cases. Session and agent cases deferred to plans 03, 04.

5. Added create_test_ctx() helper to request_context.rs tests. Future iterations should reuse this.

Plan file updates

Updated 02-roles.md to mark completed items.

Next iteration

Plan file 03: Sessions — session create/load/save, compression, autoname, carry-over, exit, context switching.