function adjacentElementsProduct(nums) {
    let maxProd = -Infinity;
    for (let i = 0, j = i + 1; i < nums.length - 1; i++, j++) {
        let currProd = nums[i] * nums[j];
        if (currProd > maxProd) {
            maxProd = currProd;
        }
    }
    return maxProd;   
}



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