【Edabit 算法 ★☆☆☆☆☆】【对参数（数字）+1并返回】Return the Next Number from the Integer Passed

【Edabit 算法 ★☆☆☆☆☆】【对参数（数字）+1并返回】Return the Next Number from the Integer Passed

math numbers algebra

Instructions

Create a function that takes a number as an argument, increments the number by +1 and returns the result.

Examples

addition(0) // 1
addition(9) // 10
addition(-3) // -2

Notes

• Don’t forget to return the result.

Solutions

const addition = (num) => num + 1;

TestCases

let Test = (function(){
    return {
        assertEquals:function(actual,expected){
            if(actual !== expected){
                let errorMsg = `actual is ${actual},${expected} is expected`;
                throw new Error(errorMsg);
            }
        }
    }
})();

Test.assertEquals(addition(2), 3, "2 plus 1 equals 3.")
Test.assertEquals(addition(-9), -8, "-8 plus 1 equals -9.")
Test.assertEquals(addition(0), 1, "0 plus 1 equals 1.")
Test.assertEquals(addition(999), 1000, "999 plus 1 equals 1000.")
Test.assertEquals(addition(73), 74, "73 plus 1 equals 74.")