Files
learnharness/tests/phases.test.ts
T
amosblomqvist 5653c77a29 feat: probe/teach agent split — explicit phase markers, position-only plan map
Diagnosis (2026-09-11 user testing, minimal-effort GLM): sessions stuck on
'plan' forever. Two causes: (1) the three-phase view read the stored tree's
currentNodeId, which nothing ever writes post author-once (2026-09-03) — a
structural dead seam; (2) the teacher stochastically left quiz.nodeId
untagged, and done-by-quiz-result semantics would have falsely completed
nodes anyway.

The redesign (docs/probe-teach-split.md) abolishes derived occupancy in
favor of explicit events:

- Two agents over one transcript: createProberAgent (quiz without a
  nodeId field, ask, probe_done) and createTeacherAgent (full toolset,
  plan_init onward). The chat-handler construction branch keys on a
  probe_done part in the transcript. MODELS.prober added.
- probe_done: server-side seam tool — carries the learner assessment
  (strands + free-form edge read), refuses while a question is open or
  the probe is already concluded, and queues a handoff steer through the
  generalized wake pipeline (steers now dedupe by id, not jobId; job
  finalization only for job steers). The teacher auto-wakes and authors
  the plan; the learner sees the assessment via the probe-done card.
- phases: probe ends at a concluded probe_done, plan ends at a
  successful plan_init — strictly sequential, no skipping, no legacy
  compatibility (data wiped at the pivot per doctrine).
- Plan map = position, not completion: derivePlanStatuses reads only
  tagged quiz CALLS (state/outcome feed nothing); current = latest
  tagged node with consecutive duplicates collapsed, visited = earlier
  distinct stays (a revisit stays in both — current wins at render).
  PlanTree is structure-only; currentNodeId/doneNodeIds and the dead
  mutation helpers are gone. No fallback current.
- Prompts split per agent (prompts/prober/, prompts/teacher/ over the
  trimmed shared base); graph-context injection removed entirely
  (shelved, docs/probe-teach-split.md §5); knowledge-graph context no
  longer reaches either agent.
- Plan blocks are full-only snapshots at plan_init (neighborhood
  machinery retired; the persistent DAG window is the future UI wave);
  usage capture unchanged.

Gates: tsc clean, 294/294 tests (phases/plan-tree/plan-blocks/question-
tools rewritten to the new semantics; probe-done + handoff-wake tests
added), lint, build. Live GLM smoke PASS: prober concluded with an honest
assessment, teacher auto-woke, authored a 10-node plan with the block
attached, then tagged checks on slope-instinct → secant derived current/
visited exactly as designed; grading honest both ways (driver off-by-one
proved a wrong answer grades false).
2026-09-11 06:44:20 +03:00

84 lines
3.4 KiB
TypeScript

/**
* phases — the event-driven phase chain (docs/probe-teach-split.md §4).
*
* probe ends at the first CONCLUDED probe_done (output-available); planning
* ends at the first successful plan_init (a tree with nodes). No stored-tree
* seam: the phase is a pure fold over the transcript, so it can never stick
* (the old currentNodeId-based phaseOfTree read a field nothing ever set).
*/
import assert from "node:assert";
import test from "node:test";
import type { UIMessage } from "ai";
import { phaseAt3, phaseTimeline, type Phase3 } from "../src/core/phases.ts";
/** Text-only user message. */
function user(text: string): UIMessage {
return { id: `u_${text}`, role: "user", parts: [{ type: "text", text }] };
}
/** An assistant message carrying a tool part in the given state. */
function assistantTool(
name: string,
state: "input-available" | "output-available" | "output-error",
output?: unknown,
): UIMessage {
return {
id: `a_${name}_${state}_${Math.random().toString(36).slice(2, 6)}`,
role: "assistant",
parts: [{ type: `tool-${name}`, state, ...(output !== undefined ? { output } : {}) } as never],
};
}
const DONE_ASSESSMENT = { assessment: { strands: [{ strand: "s", assessment: "a" }] } };
const PLAN_OK = { ok: true, tree: { nodes: [{ id: "n1", title: "N" }], edges: [] } };
test("phaseAt3: probe until a concluded probe_done; plan until a successful plan_init; teach after", () => {
const probe = phaseAt3([user("teach me calculus"), assistantTool("quiz", "output-available")]);
assert.equal(probe, "probe", "quiz answers alone never end the probe");
const concluded = phaseAt3([
user("teach me"),
assistantTool("probe_done", "output-available", DONE_ASSESSMENT),
]);
assert.equal(concluded, "plan", "a concluded probe_done ends the probe (planning begins)");
const plan = phaseAt3([
user("teach me"),
assistantTool("probe_done", "output-available", DONE_ASSESSMENT),
assistantTool("plan_init", "output-available", PLAN_OK),
]);
assert.equal(plan, "teach", "a successful plan_init ends planning");
const failedPlan = phaseAt3([
user("teach me"),
assistantTool("probe_done", "output-available", DONE_ASSESSMENT),
assistantTool("plan_init", "output-error", { ok: false, error: "bad mermaid" }),
]);
assert.equal(failedPlan, "plan", "a failed plan_init does not end planning");
});
test("phaseAt3: a mere probe_done CALL (input-available, not yet concluded) keeps the probe open", () => {
const still = phaseAt3([user("teach me"), assistantTool("probe_done", "input-available")]);
assert.equal(still, "probe");
});
test("phaseAt3: legacy transcripts without probe_done read as probe (no backwards compat — data wiped)", () => {
const legacy = phaseAt3([user("teach me lacan"), assistantTool("plan_init", "output-available", PLAN_OK)]);
assert.equal(legacy, "probe", "plan_init alone never flips a phase post-split");
});
test("phaseTimeline: folds messages into phase spans for the dividers", () => {
const timeline = phaseTimeline([
user("teach me"),
assistantTool("quiz", "output-available"),
assistantTool("probe_done", "output-available", DONE_ASSESSMENT),
assistantTool("plan_init", "output-available", PLAN_OK),
user("go on"),
]);
assert.deepEqual(timeline satisfies Phase3[], ["probe", "probe", "plan", "teach", "teach"]);
assert.equal(timeline.length, 5);
});
test("phaseAt3: empty transcript is probe", () => {
assert.equal(phaseAt3([]), "probe");
});