islandflow/services/ingest-options/tests/synthetic.test.ts

26 lines
1 KiB
TypeScript

import { describe, expect, it } from "bun:test";
import { buildSyntheticBurstForTest } from "../src/adapters/synthetic";
const totalBurstNotional = (burst: {
basePrice: number;
baseSize: number;
printCount: number;
}): number => burst.basePrice * burst.baseSize * burst.printCount * 100;
describe("synthetic options burst sizing", () => {
it("keeps realistic-mode ask lifts inside the configured notional band", () => {
const burst = buildSyntheticBurstForTest(2, Date.UTC(2026, 0, 2), "realistic");
expect(burst.scenarioId).toBe("ask_lift");
expect(totalBurstNotional(burst)).toBeGreaterThanOrEqual(9_000);
expect(totalBurstNotional(burst)).toBeLessThanOrEqual(35_000);
});
it("keeps active-mode sweeps inside the configured notional band", () => {
const burst = buildSyntheticBurstForTest(1, Date.UTC(2026, 0, 2), "active");
expect(burst.scenarioId).toBe("bearish_sweep");
expect(totalBurstNotional(burst)).toBeGreaterThanOrEqual(120_000);
expect(totalBurstNotional(burst)).toBeLessThanOrEqual(240_000);
});
});