The following sample code initially submits a record for approval, then approves the request. This example requires an approval process to be set up for accounts.
public class TestApproval { void submitAndProcessApprovalRequest() { // Insert an account Account a = new Account(Name='Test',annualRevenue=100.0); insert a; User user1 = [SELECT Id FROM User WHERE Alias='SomeStandardUser']; // Create an approval request for the account Approval.ProcessSubmitRequest req1 = new Approval.ProcessSubmitRequest(); req1.setComments('Submitting request for approval.'); req1.setObjectId(a.id); // Submit on behalf of a specific submitter req1.setSubmitterId(user1.Id); // Submit the record to specific process and skip the criteria evaluation req1.setProcessDefinitionNameOrId('PTO_Request_Process'); req1.setSkipEntryCriteria(true); // Submit the approval request for the account Approval.ProcessResult result = Approval.process(req1); // Verify the result System.assert(result.isSuccess()); System.assertEquals( 'Pending', result.getInstanceStatus(), 'Instance Status'+result.getInstanceStatus()); // Approve the submitted request // First, get the ID of the newly created item List<Id> newWorkItemIds = result.getNewWorkitemIds(); // Instantiate the new ProcessWorkitemRequest object and populate it Approval.ProcessWorkitemRequest req2 = new Approval.ProcessWorkitemRequest(); req2.setComments('Approving request.'); req2.setAction('Approve'); req2.setNextApproverIds(new Id[] {UserInfo.getUserId()}); // Use the ID from the newly created item to specify the item to be worked req2.setWorkitemId(newWorkItemIds.get(0)); // Submit the request for approval Approval.ProcessResult result2 = Approval.process(req2); // Verify the results System.assert(result2.isSuccess(), 'Result Status:'+result2.isSuccess()); System.assertEquals( 'Approved', result2.getInstanceStatus(), 'Instance Status'+result2.getInstanceStatus()); } }