import { test } from "node:test";
import assert from "node:assert/strict";
import { isEven } from "../src/isEven.js";

test("isEven with positive numbers", () => {
  assert.strictEqual(isEven(1), false);
  assert.strictEqual(isEven(2), true);
});

test("isEven with negative numbers", () => {
  assert.strictEqual(isEven(-1), false);
  assert.strictEqual(isEven(-2), true);
});

test("isEven with zero", () => {
  assert.strictEqual(isEven(0), true);
});