how to write the test class of an apex rest callout

Hi below is my class but i don't know how to write the test class of it in Rest api integration. can any one help me in this
public class StatusPageUtility implements Queueable, Database.AllowsCallouts {

public Map<String,String> statusPageUserWithEmailId {get;set;}
public String email{get;set;}
public String actionType{get;set;}
public String oldContactEmail{get;set;}
public StatusPageUtility(String operationType, String conEmail, String oldConEmail){
this.actionType = operationType;
this.email = conEmail;
this.oldContactEmail = oldConEmail;
}

public void execute(QueueableContext context) {
getStatusPageUsers(actionType,email,oldContactEmail);
}

//method to get all the page access users.
//actionType - add, remove, update, validate
public void getStatusPageUsers(String actionType,String email, String oldContactEmail)
{
statusPageUserWithEmailId = new Map<String,String>();
HttpRequest req = new HttpRequest();
Status_Page_Setup__c statusPageSetup = Status_Page_Setup__c.getOrgDefaults();
req.setEndpoint(statusPageSetup.Status_page_EndPoint__c+'/pages/'+statusPageSetup.Page_ID__c+'/page_access_users' );
req.setHeader('Content-Type','application/json');
User usr = [SELECT Id, User_Status_API_Key__c FROM User WHERE ID=:Userinfo.getUserId() LIMIT 1];
String userApiKey = String.isNotBlank(usr.User_Status_API_Key__c) ? usr.User_Status_API_Key__c : '';
if(String.isNotBlank(userApiKey)){
req.setHeader('authorization', 'OAuth '+userApiKey);
req.setMethod('GET');
req.setTimeout(120000);
HTTP h = new HTTP();
HTTPResponse res = new HTTPResponse();
try{
res = h.send(req);
if(String.isNotBlank(res.getBody())){
System.debug('=====response======'+res.getBody());
try{
List<PageAccessUsers> statusPageUsers = new List<PageAccessUsers>();
statusPageUsers = (List<PageAccessUsers>) JSON.deserialize(res.getBody(), List<PageAccessUsers>.class);
//iterate over the list of users recieved from Status page and creating a map of email with user id.
for(PageAccessUsers pau : statusPageUsers){
statusPageUserWithEmailId.put(pau.email,pau.id);
}
if(actionType == 'validate'){
validateStatusPageUsers(email);
}
if(actionType == 'remove'){
deleteStatusPageUsers(email);
}
if(actionType == 'add'){
addStatusPageUsers(email);
}
if(actionType == 'update'){
updateStatusPageUsers(email,oldContactEmail);
}
System.debug('=====statusPageUsers======'+statusPageUsers);
}catch(Exception e){
System.debug('==============parsing exception==========='+e.getMessage());
}

}else{
System.debug('==============error===========');
}
}catch(CalloutException ce){
System.debug('===========ce===error==========='+ce.getMessage());
}
}else{
System.debug('===========Invalid User API===========');
}

}


//method to validate user exist in Status Page.
public String validateStatusPageUsers(String contactEmail){
if(statusPageUserWithEmailId != null && String.isNotBlank(contactEmail) && statusPageUserWithEmailId.containsKey(contactEmail)){
return statusPageUserWithEmailId.get(contactEmail);
}else{
return null;
}
}

//method to delete user in Status Page.
public Boolean deleteStatusPageUsers(String contactEmail){
String pageAccessUserId = validateStatusPageUsers(contactEmail);
if(String.isNotBlank(pageAccessUserId)){
HttpRequest req = new HttpRequest();
Status_Page_Setup__c statusPageSetup = Status_Page_Setup__c.getOrgDefaults();
req.setEndpoint(statusPageSetup.Status_page_EndPoint__c+'/pages/'+statusPageSetup.Page_ID__c+'/page_access_users/'+pageAccessUserId);
req.setHeader('Content-Type','application/json');
User usr = [SELECT Id, User_Status_API_Key__c FROM User WHERE ID=:Userinfo.getUserId() LIMIT 1];
String userApiKey = String.isNotBlank(usr.User_Status_API_Key__c) ? usr.User_Status_API_Key__c : '';
if(String.isNotBlank(userApiKey)){
req.setHeader('authorization', 'OAuth '+userApiKey);
req.setMethod('DELETE');
req.setTimeout(120000);
HTTP h = new HTTP();
HTTPResponse res = new HTTPResponse();
try{
PageAccessUsersDataSet pau = new PageAccessUsersDataSet();
PageAccessUser pausr = new PageAccessUser();
pausr.email = contactEmail;
pausr.page_access_group_ids = new String[]{statusPageSetup.Group_Id__c};
pau.page_access_user = pausr;
System.debug('======='+JSON.serialize(pau));
System.debug('==After=add=JSON.serialize(bodyMap)======'+JSON.serialize(pau));
req.setBody(JSON.serialize(pau));
res = h.send(req);
if(String.isNotBlank(res.getBody())){
System.debug('=====response======'+res.getBody());
}else{
System.debug('====delete=response======'+res.getBody());
}
}catch(CalloutException ce){

}
}
}else{
System.debug('====User is not avilable');
}

return null;
}

//method to add new user in Status Page.
public Boolean addStatusPageUsers(String contactEmail){
String pageAccessUserId = validateStatusPageUsers(contactEmail);
if(String.isBlank(pageAccessUserId)){
HttpRequest req = new HttpRequest();
Status_Page_Setup__c statusPageSetup = Status_Page_Setup__c.getOrgDefaults();
req.setEndpoint(statusPageSetup.Status_page_EndPoint__c+'/pages/'+statusPageSetup.Page_ID__c+'/page_access_users');
req.setHeader('Content-Type','application/json');
User usr = [SELECT Id, User_Status_API_Key__c FROM User WHERE ID=:Userinfo.getUserId() LIMIT 1];
String userApiKey = String.isNotBlank(usr.User_Status_API_Key__c) ? usr.User_Status_API_Key__c : '';
if(String.isNotBlank(userApiKey)){
req.setHeader('authorization', 'OAuth '+userApiKey);
req.setMethod('POST');
PageAccessUsersDataSet pau = new PageAccessUsersDataSet();
PageAccessUser pausr = new PageAccessUser();
pausr.email = contactEmail;
pausr.page_access_group_ids = new String[]{statusPageSetup.Group_Id__c};
pau.page_access_user = pausr;
System.debug('======='+JSON.serialize(pau));
System.debug('==After add==JSON.serialize(bodyMap)======'+JSON.serialize(pau));
req.setBody(JSON.serialize(pau));
req.setTimeout(120000);
HTTP h = new HTTP();
HTTPResponse res = new HTTPResponse();
try{
res = h.send(req);
if(String.isNotBlank(res.getBody())){
System.debug('=====response======'+res.getBody());
}else{
System.debug('====add=response======'+res.getBody());
}
}catch(CalloutException ce){

}
}
}else{
System.debug('=====User is not avilable=====');
}

return null;
}

//method to update details of user in Status Page.
public Boolean updateStatusPageUsers(String contactEmail, String oldContactEmail){
String pageAccessUserId = validateStatusPageUsers(oldContactEmail);
if(String.isNotBlank(pageAccessUserId)){
HttpRequest req = new HttpRequest();
Status_Page_Setup__c statusPageSetup = Status_Page_Setup__c.getOrgDefaults();
req.setEndpoint(statusPageSetup.Status_page_EndPoint__c+'/pages/'+statusPageSetup.Page_ID__c+'/page_access_users/'+pageAccessUserId);
req.setHeader('Content-Type','application/json');
User usr = [SELECT Id, User_Status_API_Key__c FROM User WHERE ID=:Userinfo.getUserId() LIMIT 1];
String userApiKey = String.isNotBlank(usr.User_Status_API_Key__c) ? usr.User_Status_API_Key__c : '';
if(String.isNotBlank(userApiKey)){
req.setHeader('authorization', 'OAuth '+userApiKey);
req.setMethod('PUT');
PageAccessUsersDataSet pau = new PageAccessUsersDataSet();
PageAccessUser pausr = new PageAccessUser();
pausr.email = contactEmail;
pausr.page_access_group_ids = new String[]{statusPageSetup.Group_Id__c};
pau.page_access_user = pausr;
System.debug('======='+JSON.serialize(pau));
System.debug('==After update=delete=JSON.serialize(bodyMap)======'+JSON.serialize(pau));
req.setBody(JSON.serialize(pau));
req.setTimeout(120000);
HTTP h = new HTTP();
HTTPResponse res = new HTTPResponse();
try{
res = h.send(req);
if(String.isNotBlank(res.getBody())){
System.debug('=====response======'+res.getBody());
}else{
System.debug('====update=response======'+res.getBody());
}
}catch(CalloutException ce){

}
}
}else{
System.debug('====User is not avilable');
}
return null;
}

// A wrapper class to create json structure to send the data to the status page to add/update/remove the user.
class PageAccessUsersDataSet{
public PageAccessUser page_access_user{get;set;}
}

// A wrapper class to create json structure to send the data to the status page.
class PageAccessUser{
public String email{get;set;}
public String []page_access_group_ids{get;set;}
}


// A wrapper class to store the page access member recieved from status Page
Class PageAccessUsers{
public String id{get;set;}
public String page_id{get;set;}
public String email{get;set;}
public String external_login{get;set;}
public String page_access_group_id{get;set;}
}
}

January 1, 2019
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Adilson Arcoverde Jr
Hi subodh chaturvedi 17,

In test classes is not allowed to make callouts (will throw an exception). Here is what you have to do:
Create a new class that implements the interface HttpCalloutMock
In test class, before the Test.startTest() you have to write Test.setMock, which receives as first parameter HttpCalloutMock.class and receive as the second parameter a new instance of your HttpCalloutMock implementation
Check out the following codes:

HttpMock.cls
@isTest public class HttpMock implements HttpCalloutMock { protected Integer code; protected String status; protected String body; protected Map<String, String> responseHeaders; public HttpMock(Integer code, String status, String body, Map<String, String> responseHeaders) { this.code = code; this.status = status; this.body = body; this.responseHeaders = responseHeaders; } public HTTPResponse respond(HTTPRequest req) { HttpResponse res = new HttpResponse(); for (String key : this.responseHeaders.keySet()) { res.setHeader(key, this.responseHeaders.get(key)); } res.setBody(this.body); res.setStatusCode(this.code); res.setStatus(this.status); return res; } }

YourTestClass.cls
@isTest static void testAtualizarEnderecoAccount() { String jsonString = ''; // Add your JSON content here HttpMock mock = new HttpMock(200,'SUCCESS',jsonString, new Map<String,String>()); Test.setMock(HttpCalloutMock.class, mock); Test.startTest(); // Call your service. Result will be provided by jsonString Test.stopTest(); // Make your assertions }

January 1, 2019
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