function centuryFromYear(num) {
    //  write code here.
    if ( (num % 100) === 0 ) {
        return Math.floor(num/100);
    } else {
       return Math.floor(num/100) + 1; 
    }
}

// Instructor solution, is basically the same as my solution. Different in that he has created a const for the century where i have just wrote the code in full twice. This would be advantageous if i have to return more than 2 cases. or had a president to have a century** variable.

// function centuryFromYear(year) {
//     const century = year / 100;
    
//     if(year % 100 === 0) {
//         return century;
//     }
    
//     return Math.floor(century) + 1;
// }


/**
* Test Suite 
*/
describe('centuryFromYear()', () => {
    it('returns current century', () => {
        // arrange
        const year = 1905;
        
        // act
        const result = centuryFromYear(year);

        // log
        console.log("result 1: ", result);
        
        // assert
        expect(result).toBe(20);
    });
    
    it('returns current century for edge case of start of century', () => {
        // arrange
        const year = 1700;
        
        // act
        const result = centuryFromYear(year);

        // log
        console.log("result 2: ", result);
        
        // assert
        expect(result).toBe(17);
    });    
});