function differentSymbolsNaive(str) {
    //  write code here.
    let splitStr = str.split(''); //splits string for individual values
    let strArr = []; //creates new array, that will only hold all unique characters
    for (let i = 0; i < str.length; i++) {
        if (strArr.includes(splitStr[i])) {
            
        } else {
            strArr.push(splitStr[i]);
        } 
    }
    return strArr.length;
}



/**
* Test Suite 
*/
describe('differentSymbolsNaive()', () => {
    it('returns count of unique characters', () => {
        // arrange
        const str = 'cabca';
        
        // act
        const result = differentSymbolsNaive(str);

        // log
        console.log("result: ", result);
        
        // assert
        expect(result).toBe(3);
    });
});