How to Implement Class Tests?

Implementation of Class Tests

Overview of Class Testing

• The discussion focuses on implementing class tests, which exercise a system through its classes by creating objects and invoking their methods.

• These tests can be used in both unit testing (without external dependencies) and integration testing (with real service versions).

Characteristics of Class Tests

• Class tests do not directly relate to scenarios or requirements specified by stakeholders; instead, they focus on properties deemed important by developers.

• An example test checks if the student registration is initially empty, verifying that there are no students registered.

Test Implementation Details

• The test verifies the initial state of the student registry using a method to get the list of registered students and checking its size.

• A beforeEach clause sets up behavior before each test runs, ensuring a new instance of the student registry is created for consistency.

Reusability in Testing

• The setup process avoids redundancy by initializing common variables in the beforeEach clause rather than repeating it in every individual test case.

• Another test checks if duplicate entries (students with the same CPF number) are prevented from being added to the registry.

Detailed Example: Duplicate Student Registration

• This specific test includes three parts: setup (creating objects), action (attempting to add a second student), and verification (checking expected outcomes).

Understanding Class Testing in Student Registration Systems

Key Concepts of Class Testing

• The discussion revolves around the properties of a student registration class, emphasizing that an object representing a student will only exist after certain actions are performed.

• It is highlighted that these tests focus on verifying specific attributes and functionalities of the class, which are crucial for ensuring proper system behavior.

• The creation of objects and method invocation is central to this testing process, indicating a hands-on approach to validating class functionality.

• There is no direct guidance from stakeholder requirements; instead, developers seek to confirm details about method specifications and expected behaviors through these tests.