import { describe, it, expect } from "vitest";
import { extractTournamentIdentity } from "../match-tournament";

describe("extractTournamentIdentity", () => {
  it("uses eventDate year when the name has no trailing year", () => {
    const identity = extractTournamentIdentity({
      name: "Masters Tournament",
      eventDate: "2026-04-09",
      eventType: "tournament",
    });

    expect(identity).toEqual({ name: "Masters Tournament", year: 2026 });
  });

  it("derives the year from eventDate for a simple tournament name", () => {
    const identity = extractTournamentIdentity({
      name: "Wimbledon",
      eventDate: "2026-07-01",
      eventType: "tournament",
    });

    expect(identity).toEqual({ name: "Wimbledon", year: 2026 });
  });

  it("strips a trailing year from the name and uses it as the canonical year", () => {
    const identity = extractTournamentIdentity({
      name: "Wimbledon 2026",
      eventDate: "2026-07-01",
      eventType: "tournament",
    });

    expect(identity).toEqual({ name: "Wimbledon", year: 2026 });
  });

  it("throws when neither the name nor eventDate supply a year", () => {
    expect(() =>
      extractTournamentIdentity({
        name: "Wimbledon",
        eventDate: null,
        eventType: "tournament",
      }),
    ).toThrow(/cannot determine year/);
  });
});