function validTime(str) {
    //  write code here.
    
    // Goal: To Use ParseInt , Split
    // Got Memories of school, This is called railway time in india
    // Thanks  for the memories....
    // Tried without variables for fun...
     
    return str.split(':').length === 2 
           && parseInt(str.split(':')[0],10)>=0 
           && parseInt(str.split(':')[0],10)<=23 
           && parseInt(str.split(':')[1],10)>=0 
           && parseInt(str.split(':')[1],10)<=59;
    
}



/**
* Test Suite 
*/
describe('validTime()', () => {
    it('returns true for valid time', () => {
        // arrange
        const str = '14:58';
        
        // act
        const result = validTime(str);

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

    it('returns false when invalid hours', () => {
        // arrange
        const str = '25:51';
        
        // act
        const result = validTime(str);

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

    it('returns false when invalid minutes', () => {
        // arrange
        const str = '02:76';
        
        // act
        const result = validTime(str);

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