const fibonacci = require('./fibonacci-solution');

describe('fibonacci', () => {
  test('4th fibonacci number is 3', () => {
    expect(fibonacci(4)).toBe(3);
  });
  test('6th fibonacci number is 8', () => {
    expect(fibonacci(6)).toBe(8);
  });
  test('10th fibonacci number is 55', () => {
    expect(fibonacci(10)).toBe(55);
  });
  test('15th fibonacci number is 610', () => {
    expect(fibonacci(15)).toBe(610);
  });
  test('25th fibonacci number is 75025', () => {
    expect(fibonacci(25)).toBe(75025);
  });
  test("doesn't accept negatives", () => {
    expect(fibonacci(-25)).toBe('OOPS');
  });
  test('DOES accept strings', () => {
    expect(fibonacci('1')).toBe(1);
  });
  test('DOES accept strings', () => {
    expect(fibonacci('2')).toBe(1);
  });
  test('DOES accept strings', () => {
    expect(fibonacci('8')).toBe(21);
  });
});