function sumOddFibonacciNumbers(num) {
    let a = 0;
    let b = 1;
    let sum = 0;
        
    if (num < 0) {
        return "Invalid input";
    } else if (num == 0) {
        return sum;
    } else if (num == 1) {
        sum += b;
        return sum;
    } else {
        sum += b;        
        while ((a + b) <= num) {
            let c = a + b;
            if (c % 2 !== 0) {
                sum += c;
            }
            a = b;
            b = c;
        }
        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);
    });
});