Codex changes

Co-authored-by: Codex

services/compute/tests/helpers.ts

@@ -0,0 +1,69 @@
+import type { ClassifierConfig, ClassifierHit } from "../src/classifiers";
+import type { FlowPacket } from "@islandflow/types";
+
+export const TEST_CLASSIFIER_CONFIG: ClassifierConfig = {
+  sweepMinPremium: 40_000,
+  sweepMinCount: 3,
+  sweepMinPremiumZ: 2,
+  spikeMinPremium: 20_000,
+  spikeMinSize: 400,
+  spikeMinPremiumZ: 2.5,
+  spikeMinSizeZ: 2,
+  zMinSamples: 12,
+  minNbboCoverage: 0.5,
+  minAggressorRatio: 0.55,
+  zeroDteMaxAtmPct: 0.01,
+  zeroDteMinPremium: 20_000,
+  zeroDteMinSize: 400
+};
+
+export const buildFlowPacket = (opts: {
+  id?: string;
+  source_ts?: number;
+  ingest_ts?: number;
+  seq?: number;
+  trace_id?: string;
+  members?: string[];
+  features?: FlowPacket["features"];
+  join_quality?: FlowPacket["join_quality"];
+} = {}): FlowPacket => {
+  const id = opts.id ?? "flowpacket:test";
+  const source_ts = opts.source_ts ?? Date.parse("2025-01-01T14:30:00Z");
+  const ingest_ts = opts.ingest_ts ?? source_ts;
+  const seq = opts.seq ?? 1;
+  const trace_id = opts.trace_id ?? `trace:${id}`;
+
+  return {
+    source_ts,
+    ingest_ts,
+    seq,
+    trace_id,
+    id,
+    members: opts.members ?? ["print:1", "print:2"],
+    features: {
+      count: 1,
+      window_ms: 250,
+      total_premium: 0,
+      total_size: 0,
+      first_price: 0,
+      last_price: 0,
+      total_premium_z: 0,
+      total_size_z: 0,
+      total_premium_baseline_n: 0,
+      total_size_baseline_n: 0,
+      nbbo_coverage_ratio: 0,
+      nbbo_aggressive_buy_ratio: 0,
+      nbbo_aggressive_sell_ratio: 0,
+      underlying_mid: 0,
+      ...opts.features
+    },
+    join_quality: {
+      ...opts.join_quality
+    }
+  };
+};
+
+export const getHit = (hits: ClassifierHit[], id: string): ClassifierHit | null => {
+  return hits.find((hit) => hit.classifier_id === id) ?? null;
+};
+