function sumOddFibonacciNumbers(num) {
    //  write code here.
    const fibNumbers = [];
    let previousFirst = 0;
    let previousSecond = 1;
    let next = 1;
    for (next; next < num ; next + previousFirst){
        fibNumbers.push(next);
        next = previousFirst + previousSecond;
        previousFirst = previousSecond;
        previousSecond = next;
    }
    console.log(fibNumbers);
    const oddNumbers = fibNumbers.filter(number => {
        return number % 2 !== 0;
    });
    const sum = oddNumbers.reduce((total, number) => {
        return total += number;
    }, 0);
    return sum;    
}



/**
* Test Suite 
*/
describe('sumOddFibonacciNumbers()', () => {
    it('returns sum of all odd Fibonnci numbers', () => {
        // arrange
        const num = 10;
        
        // act
        const result = sumOddFibonacciNumbers(num);

        // log
        console.log("result 1: ", result);
        
        // assert
        expect(result).toBe(10);
    });

    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);
    });
});