Get PDI Dumps : Verified Platform Developer I (SP24)

To effectively test a custom controller that works with a Visualforce wizard, the unit test should do the following:

• Set the current page to the first page of the wizard using Test.setCurrentPage(pageRef), where pageRef is a PageReference object that points to the page URL. This allows the test to access the page parameters and controller methods for that page1.
• Set the page parameter that the wizard expects using ApexPages.CurrentPage().getParameters().put(‘input’, ‘TestValue’), where ‘input’ is the name of the parameter and ‘TestValue’ is the value to be passed. This allows the test to simulate the user input or the initial URL parameter that the wizard uses1.
• Verify the navigation logic of the wizard by checking the URL of the next page after invoking the controller action using String nextPage = controller.save().getUrl(), where controller is an instance of the custom controller class and save() is the action method that returns a PageReference object. This allows the test to assert that the wizard redirects to the correct page based on the input and logic2.

The other options are not useful for testing the custom controller. Option A is incorrect because insert pageRef is not a valid Apex statement. Option C is incorrect because public ExtendedController(ApexPages StandardController cntrl) { } is a constructor for a controller extension, not a custom controller3. References:

• Testing Custom Controllers and Controller Extensions | Visualforce Developer Guide | Salesforce Developers
• Testing Navigation Logic | Visualforce Developer Guide | Salesforce Developers
• Build a Controller Extension | Visualforce Developer Guide | Salesforce Developers

The developer should write a class that implements the HTTPCalloutMock interface to provide test coverage for the Apex code that calls out to an external system. The HTTPCalloutMock interface enables you to inject fake responses into the callout response in a test method, so that you can isolate your Apex logic from any dependency on the external system. The interface has one method, respond, that returns a predefined HTTPResponse object when the Apex code calls the HTTPRequest.send method. By using the HTTPCalloutMock interface, you can test your Apex code without actually calling the external system, which saves time and avoids hitting callout limits. The other options are not valid ways to mock a callout in a test method. The HTTPCalloutMock interface is not a class, so it cannot be extended. The WebserviceMock interface is used to mock a SOAP web service callout, not a RESTful HTTP callout. The WebserviceMock interface is also not a class, so it cannot be extended either. References:

• Apex Developer Guide: Testing HTTP Callouts by Implementing the HttpCalloutMock Interface, pages 1-2
• Trailhead: Platform Developer I Certification Study Guide: Apex Testing, unit 6

The best way to declare maxAttempts to meet the requirements is to declare it as a private static variable on a helper class. This will ensure that the variable is initialized only once per Apex transaction, and that its value is preserved and shared across trigger executions. A private static variable is a variable that belongs to a class and not an instance, and that can only be accessed within the class. A helper class is a class that contains common methods or variables that can be used by other classes or triggers.

References: The use of private static variables and helper classes can be referenced in the Salesforce Platform Developer I learning documents, specifically in modules that cover Apex basics and triggers, such as:

• Apex Basics & Database
• Apex Triggers
• Apex Testing

 To override the Contact’s Edit button and provide custom user interfaces in both Salesforce Classic and Lightning Experience, the developer should use a Visualforce page in Salesforce Classic and a Lightning component in Lightning Experience. This is because Visualforce pages are supported as overrides in Salesforce Classic, but not in Lightning Experience or mobile. On the other hand, Lightning components are supported as overrides in Lightning Experience and mobile, but not in Salesforce Classic. Therefore, the developer needs to use different technologies for different user interfaces. The developer can specify the override type and the page or component to use for each user interface in the Buttons, Links, and Actions settings of the Contact object. References: Override Standard Buttons and Tab Home Pages, Standard Actions and Overrides Basics, Override Buttons, Links, and Tabs with Visualforce

 A Full Sandbox is a type of sandbox that has a complete duplicate copy of the production org, including all the data and configuration. A Full Sandbox is useful for testing and development purposes, as it allows the developer to perform any changes or operations without affecting the production org. A Full Sandbox also supports performance testing, load testing, and staging1.

The other options are not correct because:

• A Developer Pro Sandbox is a type of sandbox that has a copy of the production org’s configuration (metadata) and some data. A Developer Pro Sandbox is limited by storage space and can only hold up to 1 GB of data1.
• A Partial Copy Sandbox is a type of sandbox that has a copy of the production org’s configuration and a sample of the data. A Partial Copy Sandbox is limited by storage space and can only hold up to 5 GB of data. The data is selected based on a sandbox template that defines the objects and records to include1.
• A Production org is not a duplicate copy of itself, but the original org where the live data and processes are stored. A Production org is not meant for testing or development purposes, as any changes or operations can affect the users and the business2.

References:

• 1: Sandbox Types and Templates
• 2: Salesforce Environments