const { test, describe } = require("node:test");
const assert = require("node:assert");
const { mostLikes } = require("../src/utils");

describe("most likes ", () => {
  const posts = [
    {
      _id: "5a422aa71b54a676234d17f8",
      title: "Go To Statement Considered Harmful",
      author: "Edsger W. Dijkstra",
      url: "https://homepages.cwi.nl/~storm/teaching/reader/Dijkstra68.pdf",
      likes: 5,
      __v: 0,
    },
    {
      _id: "5a422aa71b54a676234d17f8",
      title: "Go To Statement Considered Harmful",
      author: "Edsger W. Dijkstra",
      url: "https://homepages.cwi.nl/~storm/teaching/reader/Dijkstra68.pdf",
      likes: 2,
      __v: 0,
    },
    {
      _id: "123",
      title: "Lololo",
      author: "John Doe",
      url: "https://homepages.cwi.nl/~storm/teaching/reader/Dijkstra68.pdf",
      likes: 1,
      __v: 0,
    },
  ];

  const emptyArray = [];

  const gibberish = "asdaSd123asd";

  test("finds top author  properly", () => {
    assert.deepStrictEqual(mostLikes(posts), {
      author: "Edsger W. Dijkstra",
      likes: 7,
    });
  });

  test("works fine with empty array", () => {
    assert.strictEqual(mostLikes(emptyArray), null);
  });

  test("fails with gibberish input", () => {
    const failedCall = () => {
      mostLikes(gibberish);
    };
    assert.throws(failedCall, Error);
  });
});