Unit Testing - Reading Assignment

Blockchain Business Course
#621

  1. What is Unit Testing?
    Unit Testing is a method in computer programming where individual units of source code are tested to determine if they are fit for use.

  2. Why is unit testing important for refactoring?
    Unit testing is crucial for refactoring because it allows programmers to modify the internal structure of the code without altering its external behavior. It provides a safety net that ensures that changes made during refactoring do not break the functionality of the code.

  3. How does Unit Testing help the bottom-up testing approach?
    In a bottom-up testing approach, unit testing plays a vital role by ensuring that the individual units (the lowest level components) of an application are working correctly before they are integrated with other units. By testing these smaller components first, unit testing reduces uncertainty in the units themselves and simplifies the subsequent integration testing process.

#622
  1. What is Unit Testing?
    Testing an individual unit of a code base, such as an individual function or procedure, to determine if it is fit for use
  2. Refactoring means that you change and (hopefully) improve the internal structure of the code without changing the behaviour of the code. For example, developers may change a piece of code in order to make the code run faster but still perform the same task. Why is unit testing important for refactoring?
    Unit tests make it easy and fast to check whether an individual piece of code still behaves as intended. so if you change a function to improve its performance or incorporate best practices, you check against the unit test that you didn’t change the behaviour of the application
  3. How does Unit Testing help the bottom-up testing approach?
    bott 1. What is Unit Testing?
  4. Refactoring means that you change and (hopefully) improve the internal structure of the code without changing the behaviour of the code. For example, developers may change a piece of code in order to make the code run faster but still perform the same task. Why is unit testing important for refactoring?
  5. How does Unit Testing help the bottom-up testing approach?
    Unit tests assess each function, the sum of which can help assess the overall behaviour of the application. If all unit tests pass then integration testing becomes much easier
#623

What is Unit Testing?
Unit testing is a method in software engineering where individual units or components of the code are tested to ensure they work as intended. A unit is the smallest testable part of an application, such as a function or method. Unit tests are typically written by developers to verify the correctness of their code.

Why is Unit Testing Important for Refactoring?
Refactoring involves changing and improving the internal structure of the code without altering its external behavior. Unit testing is crucial for refactoring because:

  1. Ensures Consistency: Unit tests confirm that the refactored code still behaves correctly, maintaining the same functionality.
  2. Detects Errors Early:If refactoring introduces any errors, unit tests will catch them quickly, ensuring that changes do not break existing code.
  3. Facilitates Safe Changes: Developers can refactor confidently, knowing that any issues will be immediately flagged by the tests.

How Does Unit Testing Help the Bottom-Up Testing Approach?
The bottom-up testing approach starts with testing the smallest units of code first before integrating them into larger components. Unit testing supports this approach by:

  1. Building Confidence in Components: By testing individual units first, developers ensure that each part functions correctly before integration.
  2. Simplifying Debugging:When errors are detected during integration, unit tests help pinpoint the problematic component quickly.
  3. Enhancing Integration Testing: With reliable unit tests, the integration phase is smoother and more efficient since the basic building blocks are already verified.