// Tests for the enrolment live-session fast-path decision (#1378), run in
// Node. Same harness style as home/test/serverlist.test.mjs.
//   node home/test/sessionreuse.test.mjs
import assert from "node:assert/strict";
import { reuseCandidate } from "../web/static/sessionreuse.js";

const store = (entries) => ({ getItem: (k) => (k in entries ? entries[k] : null) });

let pass = 0;
function test(name, fn) {
  fn();
  pass++;
  console.log("PASS ", name);
}

test("both halves present → candidate with token + dek", () => {
  assert.deepEqual(
    reuseCandidate(store({ home_token: "tok", home_dek: "dek64" })),
    { token: "tok", dek: "dek64" },
  );
});

test("either half missing → null (ceremony path)", () => {
  assert.equal(reuseCandidate(store({ home_token: "tok" })), null, "no DEK — a persisted token alone never skips the ceremony");
  assert.equal(reuseCandidate(store({ home_dek: "dek64" })), null, "no token");
  assert.equal(reuseCandidate(store({})), null, "cold tab");
  assert.equal(reuseCandidate(store({ home_token: "", home_dek: "" })), null, "empty strings are absent");
});

test("throwing or absent storage → null, never a crash", () => {
  assert.equal(reuseCandidate({ getItem: () => { throw new Error("denied"); } }), null);
  assert.equal(reuseCandidate(null), null);
});

console.log("\nALL PASSED (" + pass + ")");