import {expect} from "chai"

import { getRecomendElements } from "../../lib/getRecomended"; 

describe('getRecomendElements', function() {
  it('should return an empty array when the input array is empty', function() {
    const result = getRecomendElements([], 3);
    expect(result).to.be.an('array');
    expect(result.length).to.be.equal(0);
  });

  it('should throw an error when the input array is of incorrect type', function() {
    expect(() => getRecomendElements('not_an_array', 3)).to.have.length(0);
  });

  it('should return an empty array if there are no items with prices within the range of 20 to max price', function() {
    const inputArray = [
      { name: 'item1', price: 10 },
      { name: 'item2', price: 15 },
    ];
    const result = getRecomendElements(inputArray, 3);
    expect(result).to.be.an('array');
    expect(result.length).to.be.equal(2);
  });

  it('should return the correct number of elements if not found in range 20/80% of max price', function() {
    const inputArray = [
      { name: 'item1', price: 10 },
      { name: 'item2', price: 25 },
      { name: 'item3', price: 30 },
      { name: 'item4', price: 15 },
      { name: 'item4', price: 151 },
      { name: 'item4', price: 103 },
      { name: 'item4', price: 406 },
      { name: 'item4', price: 9909 },
      { name: 'item4', price: 10002 },
    ];
    const result = getRecomendElements(inputArray, 3);
    expect(result).to.be.an('array');
    expect(result).to.have.length(3);
  });



  it('should return the correct number of elements with a total price not exceeding the max price', function() {
    const inputArray = [
      { name: 'item1', price: 10 },
      { name: 'item2', price: 25 },
      { name: 'item3', price: 5530 },
      { name: 'item4', price: 15 },
      { name: 'item4', price: 3151 },
      { name: 'item4', price: 103 },
      { name: 'item4', price: 2406 },
      { name: 'item4', price: 9909 },
      { name: 'item4', price: 10002 },
    ];
    const result = getRecomendElements(inputArray, 3);
    expect(result).to.be.an('array');
    expect(result).to.have.length(3);
  });

  // Add additional tests as needed
});