function adjacentElementsProduct(nums) {
    let defaultMax = nums[0] * nums[1]

    for(i=0; i<nums.length-1; i++) { 
        let currentMax = nums[i] * nums[i+1]
        if(currentMax > defaultMax) {
            defaultMax = currentMax
        }
    }
    return defaultMax
}


/**
* Test Suite 
*/
describe('adjacentElementsProduct()', () => {
    it('returns largest product of adjacent values', () => {
        // arrange
        const nums = [3, 6, -2, -5, 7, 3];
        
        // act
        const result = adjacentElementsProduct(nums);

        // log
        console.log("result: ", result);
        
        // assert
        expect(result).toBe(21);
    });
});