Need help in writing a test class for REST API call through Oauth2 authentication between two Salesforce instances.
I have remote class (Method @HttpPOST) in provider instance which return sets of records. From Salesforce client instance, first i am sending request to get Access token and then sending again with some parameter to retrieve set of records. referred Salesforce https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/apex_methods_system_multistaticresourcecalloutmock.htm,
Here is test class i have written, it is still incomplete.
`
@isTest
public class ExSearchPageControllerTest{
static testMethod void ExSearchPageControllerTestMethod() {
MultiStaticResourceCalloutMock mock = new MultiStaticResourceCalloutMock();
mock.setStaticResource('https://test.salesforce.com//services/apexrest/SearchData','SearchDataTest');
mock.setStatusCode(200);
mock.setHeader('Content-Type', 'application/json');
Test.startTest();
List<SearchWrapperClass> swcl=new List<SearchWrapperClass>();
ExSearchPageController myclass1=new ExSearchPageController();
// Set the mock callout mode
Test.setMock(HttpCalloutMock.class, mock);
myclass1.name='Test Name';
myclass1.runSearch();
ExSearchPageController myclass=new ExSearchPageController();
myclass.name='Test Name ';
myclass.street='Test Street Address ';
myclass.city='Test City ';
List<SelectOption> countryLs=myClass.countryList;
myclass.selectedCountry='US';
myclass.ReturnAccessToken ();
Test.stopTest();
}
` Issue is, in my original class i have called another instance twice, first to retrieve access token by passing secret key and username, password. In 2nd call i am passing values "test name" ect. But it failed to retrieve result as token is null.