import { describe, expect, test } from "bun:test";
import { rememberStart, takeStart } from "../src/dispatch/late_failure";

describe("late start failures", () => {
  test("a remembered start is returned once, then forgotten", () => {
    rememberStart("c1", "job-1");
    expect(takeStart("c1")).toBe("job-1");
    expect(takeStart("c1")).toBeUndefined();
  });

  test("a command nobody started is unknown", () => {
    expect(takeStart("never-sent")).toBeUndefined();
  });

  test("an hour-old start is dropped rather than failing a job long since resolved", () => {
    const longAgo = Date.now() - 2 * 60 * 60 * 1000;
    rememberStart("old", "job-old", longAgo);
    rememberStart("new", "job-new");
    expect(takeStart("old")).toBeUndefined();
    expect(takeStart("new")).toBe("job-new");
  });

  test("the table is bounded", () => {
    for (let i = 0; i < 1500; i++) rememberStart(`bulk-${i}`, `job-${i}`);
    expect(takeStart("bulk-0")).toBeUndefined();
    expect(takeStart("bulk-1499")).toBe("job-1499");
  });
});