Unit Testing - Reading Assignment


#21
  • What is Unit Testing?

A software development technique. It encourages isolating programming components by mocking their dependencies and testing them in a fully controlled environment. No networking, database queries or other external “heavy” operations are allowed.

  • 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 testing is important as it allows to rapidly check that no functional changes (aka “bugs” or “issues”) have been introduced to the codebase during refactoring. Manual testing does not scale well, so unit testing is more beneficial.

  • How does Unit Testing help the bottom-up testing approach?

It ensures that separated components work well. So the probability of them working well together increases.


#22

What is Unit Testing?

Unit testing is method for testing the smallest unit of source code for its fit for use. It could be a function or a procedure.

Why is unit testing important for refactoring?

Unit testing provides for the ability to ‘roll back’ to the individual part where the change is to take place because all the smallest units of code have been ‘parted’ via the method of unit tests.

How does Unit Testing help the bottom-up testing approach?

By testing the smallest individual parts separately first (bottom-up), and then all together as a whole, we can target and minimize errors.


#23
  1. Unit testing is testing individual components before they are integrated into a solution. Thus it catches errors earlier and therefore more easily.

  2. Unit testing provides a cross-check that refactoring does not create errors within components previously written.

  3. It helps the bottom-up approach by testing sub units before they are integrated into the overall solution. Jumping to the overall solution first could make it difficult to find the source of errors.


#24

1.What is Unit Testing? A: testing an isolated function with many static conditions (almost white-box testing), boundary limits and other values.

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? A: Enable simple functional regretion tests that can be quickly run to verify that the funtions still do the same job after refactoting their code.

3.How does Unit Testing help the bottom-up testing approach? A: Testing and veifying quickly the basic sw functions are still working as expected.


#25
  1. What is Unit Testing?
    Type of SW testing methodology where application is made and tested in/per units of code/modules simultaneously with writing the automated code for testing it. It is a test-driven approach also to the implementation, where the original correct iteration becomes documentation of the unit’s function=Formal design in form of unit-test cases.

  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 testing is important for refactoring because the original first correct version of the unit becomes a guide to how all evolutions should function, so you always see the intended function in the artifact and have code to test automatically the refactored iterations.

  3. How does Unit Testing help the bottom-up testing approach?
    You are setting up functional and always-on units of the code in overall structure and if any defect appears it is easy to directly point to where it comes from and fix it. Hence, integration testing can be also much easier.


#26

What is Unit Testing?

  • Unit Testing is the practice of writing code that tests the smallest piece or unit of code that programmers write for an app.

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?

  • Because regardless of performance improvements, unit testing focuses on the behavior of the piece of code to be tested, so as long as the refactoring doesn’t change the behavior of the code having the test ensures it won’t mess up with other pieces of code with which it is interacting.

How does Unit Testing help the bottom-up testing approach?

  • Because Unit Testing tests the smallest pieces of code in a system and by guaranteeing that the small pieces independently work well, it can be assumed that an integration of these individual pieces will also work properly. Obviously, integration, performance, snapshot testing among others, is still needed.

#27
  1. What is Unit Testing? Testing the smallest usable part of an application to see if it works as intended.

  2. Refactoring means that you change and (hopefully) improve the internal structure of the code without changing the behavior 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 testing allows you to refactor at a later date. You are able to easily see if the changes affect the code at each unit which makes it viable to refactor after initial testing.

  1. How does Unit Testing help the bottom-up testing approach?

A bottom-up testing approach simplifies integration testing.