test(05-01): add failing fixture-source + loader-env suites (F1-F8, L1-L3)
- synthetic injected datasets only — never the network, never the committed file - F3 pins the 200 m haversine tolerance boundary; F6 the defensive pair skip - F7 the lazy-index source gate (LAW 1); L2 the esbuild inline marker
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araharah-executor
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#!/usr/bin/env node
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/*
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* fixture-source.test.mjs — the fixture RoutingSource backend gates (F1–F8).
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* --------------------------------------------------------------------------
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* RED first (plan 05-01 task 3): every case fails while
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* routing/src/fixture-source.ts does not exist.
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*
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* Datasets are SYNTHETIC and injected via createFixtureRoutingSource(data) —
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* never the network, never the committed file (that one is exercised by the
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* loader-env suite's L3 against the default source).
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*
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* F1 empty corpus -> null — the committed seed's state until 05-02
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* F2 match serves best-first — backend tag, order, decoded geometry,
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* cumulative field, EMPTY steps (T-05-07)
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* F3 tolerance boundary — ~111 m serves; ~222 m is honest null
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* (the 200 m law, haversine-verified)
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* F4 slug guard — non-slug / over-long destinationId ->
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* null WITHOUT consulting the index (T-05-03)
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* F5 unknown destination — valid slug with no pair -> null (D-03,
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* never a nearest-match)
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* F6 malformed pair skipped — NaN distance / empty routes / throwing
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* geometry are skipped at index build; a
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* well-formed sibling still serves
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* F7 lazy index — source gate: no `new Map(` and no
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* `decodePolyline6(` call at TOP LEVEL
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* (gazetteer LAW 1 — Workers 1 s startup)
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* F8 getPairOrigin — slug-guarded lookup by pairId; positive
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* half is deferred while the committed
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* seed is empty (visible SKIP, the
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* loader-env L2/L3 precedent)
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*
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* Run: npm run routing:test (exit 0 = all green)
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*/
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import { strict as assert } from "node:assert";
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import { readFileSync } from "node:fs";
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import path from "node:path";
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import { fileURLToPath } from "node:url";
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import { test } from "./harness.mjs";
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const here = path.dirname(fileURLToPath(import.meta.url)); // routing/test
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// Lazy module loads — missing modules => per-case ERR_MODULE_NOT_FOUND (RED).
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let polylinePromise = null;
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function loadPolyline() {
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if (!polylinePromise) polylinePromise = import("../src/polyline.ts");
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return polylinePromise;
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}
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let sourcePromise = null;
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function loadSource() {
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if (!sourcePromise) sourcePromise = import("../src/fixture-source.ts");
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return sourcePromise;
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}
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/* ————— synthetic dataset builder (public KL coordinates, 1e-6 grid) ————— */
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const KL_TOWER = { lat: 3.1528, lng: 101.7038, label: "Kuala Lumpur Tower" };
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const KL_SENTRAL = { lat: 3.1343, lng: 101.6869 };
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const PATH_A = [
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{ lat: 3.1528, lng: 101.7038 },
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{ lat: 3.15, lng: 101.7 },
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{ lat: 3.14, lng: 101.69 },
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{ lat: 3.1343, lng: 101.6869 },
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];
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const PATH_B = [
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{ lat: 3.1528, lng: 101.7038 },
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{ lat: 3.148, lng: 101.699 },
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{ lat: 3.1343, lng: 101.6869 },
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];
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async function buildSyntheticDataset() {
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const { encodePolyline6 } = await loadPolyline();
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return {
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version: 1,
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originToleranceM: 200,
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pairs: [
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{
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pairId: "kl-tower-to-kl-sentral",
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origin: KL_TOWER,
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destinationId: "kl-sentral",
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routes: [
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{ geometry: encodePolyline6(PATH_A), distanceM: 4800, durationS: 600 },
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{ geometry: encodePolyline6(PATH_B), distanceM: 5200, durationS: 640 },
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],
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},
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],
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};
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}
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/* ————— F1–F8 ————— */
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test("F1 empty corpus -> null — every route() resolves null (the seed's state until 05-02)", async () => {
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const { createFixtureRoutingSource } = await loadSource();
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const source = createFixtureRoutingSource({ version: 1, originToleranceM: 200, pairs: [] });
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assert.equal(source.name, "fixture", "the backend tag is 'fixture'");
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const result = await source.route({
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origin: { lat: 3.1528, lng: 101.7038 },
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destinationId: "kl-sentral",
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});
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assert.equal(result, null, "an empty corpus is honest-null, never a fabricated route");
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});
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test("F2 match serves best-first — backend tag, order, decoded geometry, cumulative field, EMPTY steps", async () => {
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const { createFixtureRoutingSource } = await loadSource();
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const data = await buildSyntheticDataset();
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const source = createFixtureRoutingSource(data);
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const origin = { lat: 3.1528, lng: 101.7038 };
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const result = await source.route({ origin, destinationId: "kl-sentral" });
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assert.ok(result, "the pinned origin + matching destinationId must serve");
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assert.equal(result.backend, "fixture");
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assert.equal(result.destinationId, "kl-sentral");
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assert.deepEqual(result.origin, origin);
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assert.equal(result.options.length, 2, "both synthetic routes serve, order preserved");
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assert.deepEqual(
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result.options[0].geometry.points,
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PATH_A,
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"options[0] is fixture route 1 (best-first order preserved)",
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);
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assert.equal(result.options[0].summary.distanceM, 4800);
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assert.equal(result.options[0].summary.durationS, 600);
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assert.equal(result.options[1].summary.distanceM, 5200);
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const cum = result.options[0].geometry.cumulativeDistanceM;
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assert.equal(cum.length, PATH_A.length, "cumulative is the same length as points");
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assert.equal(cum[0], 0, "cumulative starts at 0");
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for (let i = 1; i < cum.length; i++) {
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assert.ok(cum[i] >= cum[i - 1], "cumulative is non-decreasing");
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assert.ok(Number.isFinite(cum[i]), "cumulative entries are finite meters");
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}
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for (const option of result.options) {
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assert.deepEqual(option.steps, [], "fixture-world steps are ALWAYS empty (T-05-07, D-10)");
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}
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});
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test("F3 tolerance boundary — ~111 m from the pinned origin serves; ~222 m is honest null", async () => {
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const { createFixtureRoutingSource } = await loadSource();
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const data = await buildSyntheticDataset();
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const source = createFixtureRoutingSource(data);
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// 0.001 deg lat ~= 111 m (haversine) — inside the 200 m tolerance.
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const near = await source.route({
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origin: { lat: 3.1538, lng: 101.7038 },
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destinationId: "kl-sentral",
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});
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assert.ok(near, "GPS jitter within ~111 m of the pinned origin must still serve");
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// 0.002 deg lat ~= 222 m — outside the 200 m tolerance.
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const far = await source.route({
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origin: { lat: 3.1548, lng: 101.7038 },
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destinationId: "kl-sentral",
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});
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assert.equal(far, null, "beyond the tolerance the backend must NOT fabricate a route (D-03)");
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});
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test("F4 slug guard — non-slug and over-long destinationIds are refused before the index is touched", async () => {
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const { createFixtureRoutingSource } = await loadSource();
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const data = await buildSyntheticDataset();
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const source = createFixtureRoutingSource(data);
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const origin = { lat: 3.1528, lng: 101.7038 };
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assert.equal(
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await source.route({ origin, destinationId: "not a slug!" }),
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null,
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"spaces/punctuation are refused by the slug guard (T-05-03)",
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);
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assert.equal(
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await source.route({ origin, destinationId: "a".repeat(65) }),
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null,
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"a 65-char id exceeds the 1..64 slug charset — refused (hostile-shape DoS bound)",
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);
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});
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test("F5 unknown destination -> null — a valid slug with no pair is the honest pending state (D-03)", async () => {
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const { createFixtureRoutingSource } = await loadSource();
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const data = await buildSyntheticDataset();
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const source = createFixtureRoutingSource(data);
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const result = await source.route({
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origin: { lat: 3.1528, lng: 101.7038 },
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destinationId: "petronas-twin-towers",
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});
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assert.equal(result, null, "never a nearest-match geometry for an unknown destination");
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});
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test("F6 malformed pair skipped — NaN distance / empty routes / throwing geometry never throw to the caller", async () => {
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const { createFixtureRoutingSource } = await loadSource();
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const { encodePolyline6 } = await loadPolyline();
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const broken = {
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version: 1,
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originToleranceM: 200,
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pairs: [
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{
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pairId: "broken-nan",
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origin: { lat: 3.1528, lng: 101.7038, label: "broken distance" },
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destinationId: "kl-sentral",
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routes: [
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{
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geometry: encodePolyline6([{ lat: 3.1528, lng: 101.7038 }]),
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distanceM: Number.NaN,
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durationS: 100,
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},
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],
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},
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{
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pairId: "broken-empty-routes",
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origin: { lat: 3.1528, lng: 101.7038, label: "empty routes" },
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destinationId: "kl-sentral",
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routes: [],
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},
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{
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pairId: "broken-throwing-geometry",
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origin: { lat: 3.1528, lng: 101.7038, label: "truncated polyline" },
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destinationId: "kl-sentral",
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routes: [{ geometry: "A", distanceM: 100, durationS: 10 }],
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},
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{
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pairId: "kl-tower-to-kl-sentral",
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origin: KL_TOWER,
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destinationId: "kl-sentral",
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routes: [
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{
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geometry: encodePolyline6(PATH_A),
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distanceM: 4800,
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durationS: 600,
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},
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],
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},
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],
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};
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const source = createFixtureRoutingSource(broken);
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const served = await source.route({
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origin: { lat: 3.1528, lng: 101.7038 },
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destinationId: "kl-sentral",
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});
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assert.ok(served, "the well-formed sibling pair still serves");
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assert.equal(served.options.length, 1, "only the well-formed pair is admitted");
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assert.equal(served.options[0].summary.distanceM, 4800);
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});
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test("F7 lazy index — no `new Map(` and no `decodePolyline6(` call at TOP LEVEL (gazetteer LAW 1)", () => {
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const srcPath = path.join(here, "..", "src", "fixture-source.ts");
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const src = readFileSync(srcPath, "utf8");
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// Strip comments first (the no-storage gate pattern) — prose is not a call site.
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const code = src
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.replace(/\/\*[\s\S]*?\*\//g, " ")
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.replace(/(^|[^:\\])\/\/[^\n]*/g, "$1");
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for (const line of code.split("\n")) {
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if (line.trim() === "") continue;
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if (/^\s/.test(line)) continue; // indented => inside a function — allowed
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assert.ok(
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!line.includes("new Map("),
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`top-level index construction — LAW 1 violated: ${line.trim().slice(0, 60)}`,
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);
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assert.ok(
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!line.includes("decodePolyline6("),
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`top-level geometry decode — LAW 1 violated: ${line.trim().slice(0, 60)}`,
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);
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}
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});
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test("F8 getPairOrigin — slug-guarded lookup; positive half deferred while the seed is empty", async () => {
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const mod = await loadSource();
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assert.equal(mod.getPairOrigin("not a slug!"), null, "garbage pairId -> null (slug guard)");
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assert.equal(mod.getPairOrigin("a".repeat(65)), null, "over-long pairId -> null");
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assert.equal(mod.getPairOrigin("unknown-pair"), null, "unknown pair -> honest null");
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const pairs = mod.getPairs();
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assert.ok(Array.isArray(pairs), "getPairs returns an array");
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if (pairs.length === 0) {
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console.log(
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"SKIP F8 (positive half) — the committed seed is empty until plan 05-02 populates it; the lookup machinery is proven by F2's injected dataset",
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);
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return;
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}
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const first = pairs[0];
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const origin = mod.getPairOrigin(first.pairId);
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assert.deepEqual(
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origin,
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{ lat: first.origin.lat, lng: first.origin.lng },
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"getPairOrigin resolves the pinned origin for a known pairId",
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);
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});
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