Notes

@isTest
public class LIReportControllerTest {

// Test method to validate generateReport functionality
@isTest
static void testGenerateReport() {
// Set up mock data and environment for the test
setupTestData();

// Enqueue the callout mock
Test.setMock(HttpCalloutMock.class, new MockHttpResponseGenerator());

// Start the asynchronous test context
Test.startTest();

// Call the method
LIReportController.generateReport('Test_Report_DevName');

// End the asynchronous test context
Test.stopTest();

// Validate if the call was executed as expected
List<Report> reports = [SELECT Id, DeveloperName FROM Report WHERE DeveloperName = 'Test_Report_DevName'];
System.assertEquals(1, reports.size(), 'Report record should exist');

List<Messaging.SingleEmailMessage> sentEmails = [SELECT Id, Subject FROM Messaging.SingleEmailMessage];
System.assertEquals(1, sentEmails.size(), 'One email should have been sent');
System.assert(sentEmails[0].Subject.contains('Test Report'), 'The email subject should contain the report name');
}

// Helper method to set up test data for reports and contacts
private static void setupTestData() {
// Create a test Report record
Report report = new Report();
report.DeveloperName = 'Test_Report_DevName';
report.Name = 'Test Report';
insert report;

// Create test Contact records to simulate email recipients
List<Contact> contacts = new List<Contact>();
contacts.add(new Contact(FirstName = 'Test', LastName = 'Contact1', Email = '[email protected]', Personnel_Type__c = 'Logistic Integrator'));
contacts.add(new Contact(FirstName = 'Test', LastName = 'Contact2', Email = '[email protected]', Personnel_Type__c = 'Logistic Integrator'));
insert contacts;
}

// Mock Http Callout Response class
private class MockHttpResponseGenerator implements HttpCalloutMock {
public HTTPResponse respond(HTTPRequest req) {
// Mock response with CSV content type
HttpResponse res = new HttpResponse();
res.setHeader('Content-Type', 'text/csv');
res.setBody('Sample CSV content for testing');
res.setStatusCode(200);
return res;
}
}
}