Unit Testing - Reading Assignment

Blockchain Business Course
#81

Unit testing is a way to test if certain functions of your code give you the correct outcome

With unit testing, you “shred” your code into certain parts. If you know those parts are working well, it makes it really easy to refactor code

Since you test different parts first with unit testing, it gets easier to test the whole code after

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#82

  1. What is Unit Testing?
    unit testing is a method by which individual units of source code are tested to determine if they are fit for use. A unit is the smallest testable part of an application.

  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 the module still works correctly (e.g., in regression testing). 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.

  3. How does Unit Testing help the bottom-up testing approach?
    By testing the parts of a program first and then testing the sum of its parts, integration testing becomes much easier.

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#83
  1. Method by which individual units of source code are tested to determine if they are fit for use.
  2. To validate that functionality remains unchanged after alterations have been made.
    Errors can be quickly identified and fixed.
  3. Unit testing makes integration testing easier as each part on its own is tested before trying to connect all parts together.
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#84
  1. Unit testing is a process in which small portions of a code is tested solely on whether it does what it should in and of itself not dependent upon any other component.
  2. Unit testing in refactoring insures that the physical changes in lines of code may be written without changing the actual outcome of the code with the ability to check results.
  3. Utilizing unit testing for bottom up testing helps eliminate faulty code early rather then later.
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#85
  1. What is Unit Testing?
  • 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?
  • whenever a change causes a fault, it can be quickly identified and fixed.
  1. How does Unit Testing help the bottom-up testing approach?
  • By testing the parts of a program first and then testing the sum of its parts, integration testing becomes much easier.
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#86
  1. Unit testing of minimum individual unit of source code to see if the code runs as designed
  2. Unit testing allows to test the responsible code first.
  3. Unit testing helps bottom-up testing approach by confirming the each unit of code before tesing integrated set of codes.
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#87

Unit testing is for testing different parts of the code.

To make sure the refactoring achieved its goal and the code works better, quickly identify problems.

It makes it easier for integration testing and identifies issues in the unit.

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#88
  1. Unit testing is a method to test individual units of code.
  2. Unit testing used to make sure that refactoring has not changed the behavior of the code
  3. Unit testing helps the bottom-up testing approach by reducing uncertainty in the units themselves.
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#89

  1. What is Unit Testing?
    Testing of the smallest part of the code - can be done manually or in an automated manor.

  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 unit testing can still reveal errors that may not surface in the beginning. Unit testing should always be performed to catch accidental errors

  3. How does Unit Testing help the bottom-up testing approach?
    Testing at the basic unit, then verifying the total of the units it simplifies testing and assists in accuracy

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#90

1.What is Unit Testing? The testing specifically of individual units of source 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? It is important to conduct unit testing via various test cases to identify how each unit behaves in various circumstances in order to quickly identity any faults down the line during refactoring.

3.How does Unit Testing help the bottom-up testing approach? Unit testing ensures proper understanding of the individual parts, which allows for a better understanding of the overall unit performance.

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#91
  1. Unit Testing is when parts of code are tested to ensure carefree use.
  2. Because code affects other code in a manner of extreme complexity, unit testing is critical to ensure operational integrity.
  3. By elaborately testing each unit before it is integrated, we are ensuring the elemental code is functioning properly. When problems occur in the program, a set of potential causes may be logically eliminated.
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#92

1] A unit test provides a strict, written contract that the piece of code must satisfy
2] Unit tests continue to accurately reflect the intended use of the executable and code in the face of any change
3] It test the function/operation of individual components of the code, which makes it much easier to identify and fix errors than testing the software as a whole

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#93
  1. What is Unit Testing?
    A testing process 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?
    Unit testing 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 testing the parts of a program first and then testing the sum of its parts, integration testing becomes much easier.
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#94

  1. Unit Testing is the method of constructing a program in a way that it is comprised of individual units of source code. A unit can run on its own, and thus, be tested without having to run the entire program. The smallest individually testable part of a program is referred to as a unit. Such a unit can, for example, be a single function. There is a significant number of benefits to unit testing.

  2. When looking at the code of an application, it is apparent that it is made up of several units that can each function on their own. While an applications’s source code can be very efficient, it can also have more inefficient elements. Without unit testing it would take an infeasible amount of time to rewrite a program to be more efficient. Unit testing gives the coder the option to single out such inefficient pieces of code (units), rewrite them to be more efficient, and finally test it again to make sure it still works as intended. When the new version of this unit now replaces the previous, inefficient one, the application will still do the same thing, just faster.

  3. Unit Testing is essential to perform a bottom-up test. Every unit will be tested individually, before eventually testing the entire application. This approach decreases the time needed to find errors or inefficient pieces of code, because all the units have been tested.

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#95

1- Unit testing is a method by which individual units of source code are tested to determine if they are fit for use. A unit is the smallest testable part of an application. In procedural programming a unit may be an individual function or procedure.

2- Unit testing allows the programmer to refactor code at a later date, and make sure the module still works correctly.

3- By testing the parts of a program first and then testing the sum of its parts, integration testing becomes much easier.

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#96

1. It is the method of isolating the smallest possible components of the written software code and then testing each of them individually to see if there are any errors in the coding.

2. To be able to quickly test all code, perhaps many times over, with many rounds of refactoring, and see the exact same passing results you had prior to the refactoring. All tests should pass or the refactoring has very likely introduced one or more errors.

3. Observation and understanding of the test results is easier. Also, the specific test conditions are easier to create as you work from individual units tests to the next level that relies on the unit tests, and then to full integration testing.

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#97
  1. It is a method by which each unit/components of a software is tested.
  2. It is important so developpers can quickly identify if the change on the code has had an good or negative impact.
  3. Unit testing makes the integration testing easier. Unit testing documentation provides good understanding of API
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#98

  1. What is Unit Testing?
    Is testing done to the smallest part of a code (i.e function, procedure etc) to determine if they are fit to use and to ensure that code meets its design and behaves 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?
    Because if all other units have been tested and are working correctly, a developer can focus only on a particular unit to improve performance, without worrying that everything will break or not knowing where the fault occurred.

  3. How does Unit Testing help the bottom-up testing approach?
    By testing the parts of a program first and then testing the sum of its parts

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#99
  1. Unit Testing is a method us to test the goodness of specific units (smallest fraction of an application which can be tested) of source code.
  2. Because you need to be able to test the actual impact of the small changes applied to units of code to check and verify that it still allows to perform the same tasks.
  3. Bottom-up testing relies on the testing of small individual components first followed by the general testing once everything has been checked. Unit Testing is useful when using this approach because it allows to check the actual goodness of source code units before checking the entire application.
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#100

  1. Unit testing is a method in a software developing process. In the unit testing method every application/function is tested and checked whether it gives the correct output or not. That means everything is tested what can be tested. At a later stage it will be checked whether the individual functions /method/applications interact correctly with each other. To perform unit testing for every function/application a test case/contract (lines of code/ programm) is written which checks if the function behaves as it should be.

  2. Unit testing is the basis for refactoring a code at a later stage. In the first stage you already wrote a program which defined the correct behaviour/output of the function/method. When you now implement/change things in the function which should give the exact same results, you can still use your written program and check if everything works as before. With this approach you can easily identify in which function/method the mistake occurs. You dont´ have to go through every function/method of the whole program/application. So problems/bugs can be find in an early stage of the development which makes it a lot easier to maintain the software/ remove mistakes. This also results in saving costs.

  3. The bottom testing approach means that you test everything from scratch or better to say every small piece of code which can be tested will be tested. At a first stage the unit testing ensures that every small function/method works as it should be. Then if everything works well, you can test the isolated functions together and check how they interact with each other. Testing the whole programm with all of the small parts become easier and is faster, because you can identify mistakes/bugs faster. Testing gets in this case more efficient. In my understanding the unit testing is the basis of the bottom up testing approach.

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