i am not understanding this statement in Test Driven Development “Test code requires maintenance as well as production code”Disadvantages of Test Driven Development?Is it feasible to introduce Test Driven Development (TDD) in a mature project?Test driven development bookBash and Test-Driven DevelopmentExperiences with Test Driven Development (TDD) for logic (chip) design in Verilog or VHDLWhat are good examples of *perfectly acceptable* approaches that do not use/need/require test driven development?How can you ensure secure coding with Test Driven Development?Is there a workable approach to use Test Driven Development in a COBOL application?Is Test Driven Development the same as Test Driven Design?Meteor test driven development

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i am not understanding this statement in Test Driven Development “Test code requires maintenance as well as production code”


Disadvantages of Test Driven Development?Is it feasible to introduce Test Driven Development (TDD) in a mature project?Test driven development bookBash and Test-Driven DevelopmentExperiences with Test Driven Development (TDD) for logic (chip) design in Verilog or VHDLWhat are good examples of *perfectly acceptable* approaches that do not use/need/require test driven development?How can you ensure secure coding with Test Driven Development?Is there a workable approach to use Test Driven Development in a COBOL application?Is Test Driven Development the same as Test Driven Design?Meteor test driven development






.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;








-1















what is the meaning of this below statement, by Joosep Simm




Test code requires maintenance as well as production code....
test code grows linearly with production code. All lines of code require maintenance, which means cost. The cost is easiest to acknowledge when a change to existing functionality is made. The tests have to be modified as well as production code. This becomes a problem when multiple tests execute the same line of production code. This usually happens when there are too many high-level tests. The highest level test is an end-to-end test, which starts by invoking the GUI and goes all the way down to the data storage level. But it’s not only the highest-level test that can cause problems.











share|improve this question


























  • Without any formating, it is not clear what parts of your question are the “statement” you say you are confused by, and your own commentary.

    – Don Simon
    Mar 26 at 20:47











  • Please edit your question to format it properly. What is that your do not understand? The part of sentence reported in the title?

    – Marco Torchiano
    Mar 26 at 21:04











  • And please clarify if the provided answer goes in the right direction and is helpful for you.

    – GhostCat
    Apr 6 at 4:38

















-1















what is the meaning of this below statement, by Joosep Simm




Test code requires maintenance as well as production code....
test code grows linearly with production code. All lines of code require maintenance, which means cost. The cost is easiest to acknowledge when a change to existing functionality is made. The tests have to be modified as well as production code. This becomes a problem when multiple tests execute the same line of production code. This usually happens when there are too many high-level tests. The highest level test is an end-to-end test, which starts by invoking the GUI and goes all the way down to the data storage level. But it’s not only the highest-level test that can cause problems.











share|improve this question


























  • Without any formating, it is not clear what parts of your question are the “statement” you say you are confused by, and your own commentary.

    – Don Simon
    Mar 26 at 20:47











  • Please edit your question to format it properly. What is that your do not understand? The part of sentence reported in the title?

    – Marco Torchiano
    Mar 26 at 21:04











  • And please clarify if the provided answer goes in the right direction and is helpful for you.

    – GhostCat
    Apr 6 at 4:38













-1












-1








-1








what is the meaning of this below statement, by Joosep Simm




Test code requires maintenance as well as production code....
test code grows linearly with production code. All lines of code require maintenance, which means cost. The cost is easiest to acknowledge when a change to existing functionality is made. The tests have to be modified as well as production code. This becomes a problem when multiple tests execute the same line of production code. This usually happens when there are too many high-level tests. The highest level test is an end-to-end test, which starts by invoking the GUI and goes all the way down to the data storage level. But it’s not only the highest-level test that can cause problems.











share|improve this question
















what is the meaning of this below statement, by Joosep Simm




Test code requires maintenance as well as production code....
test code grows linearly with production code. All lines of code require maintenance, which means cost. The cost is easiest to acknowledge when a change to existing functionality is made. The tests have to be modified as well as production code. This becomes a problem when multiple tests execute the same line of production code. This usually happens when there are too many high-level tests. The highest level test is an end-to-end test, which starts by invoking the GUI and goes all the way down to the data storage level. But it’s not only the highest-level test that can cause problems.








tdd






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share|improve this question








edited Mar 27 at 1:52









VoiceOfUnreason

24.6k2 gold badges23 silver badges54 bronze badges




24.6k2 gold badges23 silver badges54 bronze badges










asked Mar 26 at 20:40









Saad BilalSaad Bilal

1




1















  • Without any formating, it is not clear what parts of your question are the “statement” you say you are confused by, and your own commentary.

    – Don Simon
    Mar 26 at 20:47











  • Please edit your question to format it properly. What is that your do not understand? The part of sentence reported in the title?

    – Marco Torchiano
    Mar 26 at 21:04











  • And please clarify if the provided answer goes in the right direction and is helpful for you.

    – GhostCat
    Apr 6 at 4:38

















  • Without any formating, it is not clear what parts of your question are the “statement” you say you are confused by, and your own commentary.

    – Don Simon
    Mar 26 at 20:47











  • Please edit your question to format it properly. What is that your do not understand? The part of sentence reported in the title?

    – Marco Torchiano
    Mar 26 at 21:04











  • And please clarify if the provided answer goes in the right direction and is helpful for you.

    – GhostCat
    Apr 6 at 4:38
















Without any formating, it is not clear what parts of your question are the “statement” you say you are confused by, and your own commentary.

– Don Simon
Mar 26 at 20:47





Without any formating, it is not clear what parts of your question are the “statement” you say you are confused by, and your own commentary.

– Don Simon
Mar 26 at 20:47













Please edit your question to format it properly. What is that your do not understand? The part of sentence reported in the title?

– Marco Torchiano
Mar 26 at 21:04





Please edit your question to format it properly. What is that your do not understand? The part of sentence reported in the title?

– Marco Torchiano
Mar 26 at 21:04













And please clarify if the provided answer goes in the right direction and is helpful for you.

– GhostCat
Apr 6 at 4:38





And please clarify if the provided answer goes in the right direction and is helpful for you.

– GhostCat
Apr 6 at 4:38












1 Answer
1






active

oldest

votes


















0















Test code requires maintenance as well as production code




People might assume that they never have to read/adapt/improve test code after it has been written, except when the corresponding production code changes or the underlying feature needs to be enhanced.



That quote tries to give reasons to explain what that assumption "We don't have to improve our test code (independently of the production code)!" is wrong.



The point is: there are very specific requirements for test code. It should help you:



  • to really test your production code and

  • to quickly identify bugs

In other words: it is essential that your test code is also easy to read and maintain over time.



This means that after you are done developing and testing a feature, it can be worthwhile to improve your test code. To ensure that it didn't turn into hard to read spaghetti/legacy code that will give headaches in the future!






share|improve this answer

























  • I would argue that test will help to quickly identify bugs, because if this is a logic bug (not a spelling, missing value mistake), then the test will be written following "bug" logic.

    – Fabio
    Apr 6 at 2:15










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1 Answer
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1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









0















Test code requires maintenance as well as production code




People might assume that they never have to read/adapt/improve test code after it has been written, except when the corresponding production code changes or the underlying feature needs to be enhanced.



That quote tries to give reasons to explain what that assumption "We don't have to improve our test code (independently of the production code)!" is wrong.



The point is: there are very specific requirements for test code. It should help you:



  • to really test your production code and

  • to quickly identify bugs

In other words: it is essential that your test code is also easy to read and maintain over time.



This means that after you are done developing and testing a feature, it can be worthwhile to improve your test code. To ensure that it didn't turn into hard to read spaghetti/legacy code that will give headaches in the future!






share|improve this answer

























  • I would argue that test will help to quickly identify bugs, because if this is a logic bug (not a spelling, missing value mistake), then the test will be written following "bug" logic.

    – Fabio
    Apr 6 at 2:15















0















Test code requires maintenance as well as production code




People might assume that they never have to read/adapt/improve test code after it has been written, except when the corresponding production code changes or the underlying feature needs to be enhanced.



That quote tries to give reasons to explain what that assumption "We don't have to improve our test code (independently of the production code)!" is wrong.



The point is: there are very specific requirements for test code. It should help you:



  • to really test your production code and

  • to quickly identify bugs

In other words: it is essential that your test code is also easy to read and maintain over time.



This means that after you are done developing and testing a feature, it can be worthwhile to improve your test code. To ensure that it didn't turn into hard to read spaghetti/legacy code that will give headaches in the future!






share|improve this answer

























  • I would argue that test will help to quickly identify bugs, because if this is a logic bug (not a spelling, missing value mistake), then the test will be written following "bug" logic.

    – Fabio
    Apr 6 at 2:15













0












0








0








Test code requires maintenance as well as production code




People might assume that they never have to read/adapt/improve test code after it has been written, except when the corresponding production code changes or the underlying feature needs to be enhanced.



That quote tries to give reasons to explain what that assumption "We don't have to improve our test code (independently of the production code)!" is wrong.



The point is: there are very specific requirements for test code. It should help you:



  • to really test your production code and

  • to quickly identify bugs

In other words: it is essential that your test code is also easy to read and maintain over time.



This means that after you are done developing and testing a feature, it can be worthwhile to improve your test code. To ensure that it didn't turn into hard to read spaghetti/legacy code that will give headaches in the future!






share|improve this answer














Test code requires maintenance as well as production code




People might assume that they never have to read/adapt/improve test code after it has been written, except when the corresponding production code changes or the underlying feature needs to be enhanced.



That quote tries to give reasons to explain what that assumption "We don't have to improve our test code (independently of the production code)!" is wrong.



The point is: there are very specific requirements for test code. It should help you:



  • to really test your production code and

  • to quickly identify bugs

In other words: it is essential that your test code is also easy to read and maintain over time.



This means that after you are done developing and testing a feature, it can be worthwhile to improve your test code. To ensure that it didn't turn into hard to read spaghetti/legacy code that will give headaches in the future!







share|improve this answer












share|improve this answer



share|improve this answer










answered Apr 2 at 12:46









GhostCatGhostCat

107k17 gold badges105 silver badges180 bronze badges




107k17 gold badges105 silver badges180 bronze badges















  • I would argue that test will help to quickly identify bugs, because if this is a logic bug (not a spelling, missing value mistake), then the test will be written following "bug" logic.

    – Fabio
    Apr 6 at 2:15

















  • I would argue that test will help to quickly identify bugs, because if this is a logic bug (not a spelling, missing value mistake), then the test will be written following "bug" logic.

    – Fabio
    Apr 6 at 2:15
















I would argue that test will help to quickly identify bugs, because if this is a logic bug (not a spelling, missing value mistake), then the test will be written following "bug" logic.

– Fabio
Apr 6 at 2:15





I would argue that test will help to quickly identify bugs, because if this is a logic bug (not a spelling, missing value mistake), then the test will be written following "bug" logic.

– Fabio
Apr 6 at 2:15








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