// Iteration
function sumOddFibonacciNumbers(num) {
    let prevFibb = 1
    let currentFibb = 1
    let sumOfOdds = 1
    while (currentFibb < num) {
        if (currentFibb % 2 !== 0) {
            sumOfOdds += currentFibb
        }
        
        let nextFibb = currentFibb + prevFibb
        prevFibb = currentFibb
        currentFibb = nextFibb
    }
    return sumOfOdds
}


/**
* 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);
    });
});