mediumleetcodejavascript
Soruyu Platformda GörTo Be Or Not To Be
To Be Or Not To Be
Write a function expect that helps developers test their code. It should take in any value val and return an object with the following two functions.
toBe(val) accepts another value and returns true if the two values === each other. If they are not equal, it should throw an error "Not Equal".
notToBe(val) accepts another value and returns true if the two values !== each other. If they are equal, it should throw an error "Equal".
Example 1:
Input: func = () => expect(5).toBe(5)
Output: {"value": true}
Explanation: 5 === 5 so this expression returns true.
Example 2:
Input: func = () => expect(5).toBe(null)
Output: {"error": "Not Equal"}
Explanation: 5 !== null so this expression throw the error "Not Equal".
Example 3:
Input: func = () => expect(5).notToBe(null)
Output: {"value": true}
Explanation: 5 !== null so this expression returns true.
*
@param {string} val
@return {Object}
*
expect(5).toBe(5); // true
expect(5).notToBe(5); // throws "Equal"
Çözüm (javascript)
solution.js
var expect = function(val) {
return {
toBe: (a) => {
if(val !== a) throw new Error("Not Equal");
else return true;
},
notToBe: (b) => {
if(val === b) throw new Error("Equal");
else return true;
}
}
};