Unit Testing - Reading Assignment

Blockchain Business Course
#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.

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#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.

#28
  1. What is Unit Testing?
    Unit testing is basically to test each and individual function/part of a code. Is the smallest testable unit of development.
  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?
    As refactoring is usually due to performance improvement, during the process the code might seems very different due to the use of different operation to obtain performance improvement. As changes could be big and code might look more complex and if unit test is not done it might cause whatever existing behavior that is correct to something that is incorrect. This might propagate to downstream system and have major impact on the whole network.
  3. How does Unit Testing help the bottom-up testing approach?
    By testing the parts of the program and make sure the parts have no issues, it will be easier to locate the issue with smaller parts and able to identify where is the issue during integration easier.
#29
  1. testing individual units of source code to make sure there are no bugs.
  2. Code is so intricate with so many outcomes that unit testing is required to find an unexpected or undesired change in outcomes.
  3. It makes integration testing easier.
#30

  1. What is Unit Testing?
    is a method by which individual units of source code are tested to determine if they are 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?
    because it allows the programmer to refactor code at a later date, and make sure the module still works correctly

  3. How does Unit Testing help the bottom-up testing approach?
    by reduce uncertainty so that the integration testing becomes much easier

#31
  1. What is Unit Testing? This is a method of testing a program by evaluating the correctness of the smallest testable part e.g. function, in the code.
  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 ensures that when a change causes a fault, it can be quickly identified and fixed.
  3. How does Unit Testing help the bottom-up testing approach? Unit testing could form part of integration testing, wherein parts are tested first before testing the “sum of its parts.”
#32
  1. What is Unit Testing?

Unit testing is a method of testing of smallest testable units of code to dermine if they contain no erros and are fit for use. Tests are executed individually and indenpendetly from other units.

  1. 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?

To determine if outputs of changed code were altered and so signaling that there was made an error when refactoring of the code.

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

To determine errors in small parts of code, before they are integrated together. This makes integration testing simpler, by reducing uncertainty where error in code was introduced.

#33
  1. What is Unit Testing? Unit Testing is a method by which each individual sub-component of software application is tested alone.
  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? In this case unit testing is important because the unit tests for each software sub-component are already available and they allow to quickly identify errors and help to select where making change in the source code to obtain the goals of re refactoring.
  3. How does Unit Testing help the bottom-up testing approach? Unit Testing helps to gbe confident about the good behaviour of each part of the software before testing the whole application.
#34
  1. What is Unit Testing?

Ans : unit testing is a method by which individual units of source code are tested to determine if they are fit for use

  1. 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?

Ans : The procedure is to write test cases for all functions and methods so that whenever a change causes a fault, it can be quickly identified and fixed.

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

Ans : Unit testing may reduce uncertainty in the units themselves and can be used in a bottom-up testing style approach. By testing the parts of a program first and then testing the sum of its parts, integration testing becomes much easier.

#35

  1. What is Unit Testing?
    Ans: The testing of the various unit of the source of the code to ensure they are fit for use by the end users.

  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?
    Ans: To optimize the code.

  3. How does Unit Testing help the bottom-up testing approach?
    Ans: It simply better to test the units of source code before testing other the full components. By testing the parts of a program first and then testing the sum of its parts, integration testing becomes much easier.

#36

  1. What is Unit Testing?
    Testing each piece of the code separately to make sure it does what it is supposed to do.
    The pieces usually are the smallest parts of code that you can isolate (for example a specific function)

  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?
    After the refactoring the program still has to behave as designed, unit testing will have to be successful in that sense that the output of the testing apps should be what is expected (so no unit tests can fail)

  3. How does Unit Testing help the bottom-up testing approach?
    You try to test the smallest pieces of code that you can isolate before testing the bigger part of the code that uses those smaller parts. It makes integration testing easier and you can isolate a possible bug much quicker this way.

#37

One. Unit testing is a method by which individual units of source code are tested to determine if they are fit to use.

Two. Because you want it to be easy to make changes in the future, so each change is easy and to see that each part that you didn’t mae changes to is still working as you wanted.

Three. It may reduce uncertainty in the units themselves. By testing parts, then the sum of all parts, integration testing will be easier .

#38

1.Testing small pieces of the codes, which are included in a bigger code.
2. To make the whole code simple and easily integrated in the bigger piece, make it more efficient
3. Mistakes can be found easily, and their location as well, which allows narrow the tasks .

#39

  1. What is Unit Testing?
    Testing each individual unit within your program seperately.

  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 in refactoring because you may create unintended results when you change the internal structure which you may not realize without unit testing.

  3. How does Unit Testing help the bottom-up testing approach?
    Because testing each unit individually is a good starting point to ensure that your units are working and returning the results which they should.

#40

  1. What is Unit Testing?
    When you test one piece of code (function or procedure) at a time to make sure it is ready 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?
    To make sure that all components work, independently. The next step would be to ensure that the code works altogether, as expected.

  3. How does Unit Testing help the bottom-up testing approach?
    By testing every small component of the code, you could identify an issue early. This is more effective than testing a whole set of code and it not working properly as a whole.