Error found in Apex REST Callout Unit:-Executing the 'getAnimalNameById' method on 'AnimalLocator' failed. Make sure the method exists with the name 'getAnimalNameById', is public and static, accepts an Integer, and returns a String.

AnimalLocator Code:-

public class AnimalLocator {    public static String getAnimalNameById(Integer id)    {         Http http = new Http();         HttpRequest request = new HttpRequest();         request.setEndpoint('https://th-apex-http-callout.herokuapp.com/animals/' + id);         request.setMethod('GET');         HttpResponse response = http.send(request);           String strResp = '';            system.debug('******response '+response.getStatusCode());            system.debug('******response '+response.getBody());         // If the request is successful, parse the JSON response.         if (response.getStatusCode() == 200)          {             // Deserializes the JSON string into collections of primitive data types.            Map<String, Object> results = (Map<String, Object>) JSON.deserializeUntyped(response.getBody());             // Cast the values in the 'animals' key as a list            Map<string,object> animals = (map<string,object>) results.get('animal');             System.debug('Received the following animals:' + animals );             strResp = string.valueof(animals.get('name'));             System.debug('strResp >>>>>>' + strResp );         }         return strResp ;    }    }

AnimalLocatorTest code:-

@isTest private class AnimalLocatorTest{     @isTest static  void AnimalLocatorMock1() {         Test.SetMock(HttpCallOutMock.class, new AnimalLocatorMock());         string result=AnimalLocator.getAnimalNameById(3);         string expectedResult='chicken';         System.assertEquals(result, expectedResult);     } }

AnimalLocatorMock:-

@isTest private class AnimalLocatorTest{     @isTest static  void AnimalLocatorMock1() {         Test.SetMock(HttpCallOutMock.class, new AnimalLocatorMock());         string result=AnimalLocator.getAnimalNameById(3);         string expectedResult='chicken';         System.assertEquals(result, expectedResult);     } }

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