function sumOddFibonacciNumbers(num) {
    //  write code here.
  let fib0 = 0;
  let fib1 = 1;
  let fib = 1;
  let sum = fib0;
  while ( fib <= num){
    if (fib % 2) {
        sum += fib1;
    }
    fib = fib0 + fib1;
    fib1 += fib0;
    fib0 = fib1 - fib0;
  }
  return sum;
}



/**
* Test Suite 
*/
describe('sumOddFibonacciNumbers()', () => {
    it('returns sum of all odd Fibonnci numbers', () => {
        // arrange
        const num = 200;
        
        // act
        const result = sumOddFibonacciNumbers(num);

        // log
        console.log("result 1: ", result);
        
        // assert
        expect(result).toBe(188);
    });

    it('returns sum of all odd Fibonnci numbers 2nd example', () => {
        // arrange
        const num = 1000;
        
        // act
        const result = sumOddFibonacciNumbers(num);

        // log
        console.log("result 2: ", result);
        
        // assert
        expect(result).toBe(1785);
    });
});