03.StringOperations

const { expect } = require('chai');
const stringOperations = require('./03.StringOperations');

describe('StringOperations', () => {
  it('stringSlicer', () => {
    const str1 = 'Pesho';
    const str2 = 'Pe'
    expect(stringOperations.stringSlicer(str1)).to.equal('Pes...');
    expect(stringOperations.stringSlicer(str2)).to.equal('Pe...');
  });

  it('wordChecker', () => {
    const word1 = 'Pesho';
    const text1 = 'Pesho e ot selo';
    const text2 = 'Gosho e ot selo';
    expect(stringOperations.wordChecker(word1, text1)).to.equal('pesho');
    expect(stringOperations.wordChecker(word1, text2)).to.equal(`${word1.toLowerCase()} not found!`);
  });

  it('printEveryNthElement', () => {
    const n1 = 2;
    const n2 = 'asfsfa';
    const arr1 = ['a', 'b', 'c', 'd'];
    const arr2 = true;
    expect(stringOperations.printEveryNthElement(n1, arr1)).to.deep.equal(['a', 'c']);
    expect(() => stringOperations.printEveryNthElement(n2, arr1)).to.throw('The input is not valid!');
    expect(() => stringOperations.printEveryNthElement(n1, arr2)).to.throw('The input is not valid!');
    expect(() => stringOperations.printEveryNthElement(n2, arr2)).to.throw('The input is not valid!');
  });
});