ipc.rs tests (4 tests):
- request_msgpack_roundtrip: LaunchApp serializes and deserializes with
correct field values.
- response_msgpack_roundtrip: LaunchAck round-trips through MessagePack.
- frame_write_read_roundtrip: write_frame encodes a 4-byte LE length
header + body; read_frame decodes the framed request correctly.
- read_frame_eof_returns_none: empty stream returns None without error.
main.rs tests (5 tests):
- registry_launch_increments_id: each launch returns a strictly
increasing session ID.
- registry_terminate_known_session: terminate returns true and state
transitions to NotFound.
- registry_terminate_unknown_returns_false: terminate on missing ID
returns false.
- registry_running_ids_reflects_live_sessions: running_ids returns all
active sessions; terminated sessions are removed.
- registry_state_not_found_for_unknown: querying an unknown session ID
returns AppStateKind::NotFound.
Also extends scripts/wsl-test.sh to run weft-appd tests alongside
weft-compositor tests.
Stale identifier rejection (state.rs):
- WeftShellWindowData gains a closed: AtomicBool field (default false).
- Dispatch<ZweftShellWindowV1, WeftShellWindowData>::request() checks the
closed flag before processing any request; posts a DefunctWindow error
(code 0) if the window has been closed, satisfying the error enum
defined in the protocol XML.
Unit tests (protocols/mod.rs, 5 tests):
- window_data_stores_fields: verifies app_id, title, role, and initial
closed state are stored correctly.
- closed_flag_transition: verifies AtomicBool store/load round-trip.
- manager_interface_name_and_version: confirms generated interface name
zweft_shell_manager_v1 and version 1.
- window_interface_name_and_version: confirms generated interface name
zweft_shell_window_v1 and version 1.
- defunct_window_error_code: confirms Error::DefunctWindow == 0 as
declared in the protocol XML.
Also adds scripts/wsl-test.sh for running cargo test with the
libdisplay-info shim in place.
