Hi Vamsi,

My apex class is:

public without sharing class EF_RequestedResourceDecisionCriteria{

    //Get data from the REquestedresource form field data field
    public static void SetDecisionCriteria(EF_Requested__c[] requestedApplications)
    {
        for (EF_Requested__c r:requestedApplications){
        //Parse the Json data
           
        }
    //Check if there was any criteria that matched the Criteria defined in Salesforce
    //Save the criteria and its data on the RequestedResource Object

    }
    //method to parse the Json data
    public void parseJson(string rrFormData) {
        Map<String, Object> root = (Map<String, Object>)JSON.deserializeUntyped(rrFormData);
        List<Object> items = (List<Object>)root.get('items');
        for (Object item : items) {
            Map<String, Object> i = (Map<String, Object>)item;
            System.debug(i.get('id'));
        }
    }
}

The test class i wrote is:

@isTest
public class EF_RequestedResourceDecisionCriteriaTest
{
    static testMethod void RequestedResourceDecisionCriteriaTest()
    {
        EF_Resource_Metadata__c objResourceMetaData = new EF_Resource_Metadata__c(Name='Test Resource Meta Data');
        insert objResourceMetaData;
     
        EF_Decision_Criteria__c objDecisionCriteria = new EF_Decision_Criteria__c();
       
        objDecisionCriteria.Name = 'Test Decision Criteria';
        objDecisionCriteria.EF_Resource_Metadata__c = objResourceMetaData.id; 
        objDecisionCriteria.CurrencyIsoCode = 'GBP';
       
      
        insert objDecisionCriteria;
       
            String json = '{'+
    '    \"CompanyContacts\": ['+
    '        {'+
    '            \"contact\": \"pn0\",'+
    '            \"postalcode\": \"0\",'+
    '            \"contactnumber\": \"pc0\"'+
    '        },'+
    '        {'+
    '            \"contact\": \"pn1\",'+
    '            \"postalcode\": \"1\",'+
    '            \"contactnumber\": \"pc1\"'+
    '        },'+
    '        {'+
    '            \"contact\": \"pn2\",'+
    '            \"postalcode\": \"2\",'+
    '            \"contactnumber\": \"pc2\"'+
    '        }'+
    '    ]'+
    '}';
       
       Profile p = [SELECT Id FROM Profile WHERE Name='Standard User'];
       User u2 = new User(Alias = 'newUser', Email='newuser@testorg.com',
       EmailEncodingKey='UTF-8', LastName='Testing', LanguageLocaleKey='en_US',
       LocaleSidKey='en_US', ProfileId = p.Id,
       TimeZoneSidKey='America/Los_Angeles', UserName='newuser@testorg.com');
      
       system.runas(u2)
       { 
        EF_RequestedResourceDecisionCriteria objReqResDecCrit = new EF_RequestedResourceDecisionCriteria();
        objReqResDecCrit.parseJson(json);
       
        system.assert(objReqResDecCrit != null);
        }       
    }
}

Thanks in advance.