// LV-2: homograph detector tests.
import { describe, expect, it } from "vitest";
import { detectHomograph } from "./domain";

describe("detectHomograph", () => {
  it("flags a hostname with non-ASCII (Cyrillic homograph) characters", () => {
    // "аpple.com" — leading а is Cyrillic U+0430, not Latin a.
    expect(detectHomograph("https://аpple.com")).toBe(true);
  });

  it("flags a punycode (xn--) label", () => {
    expect(detectHomograph("https://xn--pple-43d.com")).toBe(true);
  });

  it("accepts a bare hostname without a scheme", () => {
    expect(detectHomograph("xn--pple-43d.com")).toBe(true);
  });

  it("returns false for a plain ASCII domain", () => {
    expect(detectHomograph("https://apple.com")).toBe(false);
  });

  it("returns false for malformed input", () => {
    expect(detectHomograph("")).toBe(false);
    expect(detectHomograph("http://")).toBe(false);
  });
});