Integration Testing - Reading Assignment

[Jaakko_K]

1. Integration testing can expose problems with the interfaces among program components before trouble occurs in real world program execution.

2. Integration tests solve problems in higher-level of combinations of units. For example, if individual units are working but a set of units is not working together.

3. In bottom-up approach testing is started from units followed by tests of modules and builds. Top-down testing moves from modules and builds to individual units.

[HereWeGo]

1. Because we need to make sure all the code works perfectly in individual units and linked within the whole source code before we deploy the applications.

2. They identify problems with the way different program components interact with each other.

3. The bottom-up process starts with unit testing followed by progressively higher level tests of combinations of units otherwise known as modules or builds.
   In top-down integration testing, the highest-level modules are tested first and progressively lower-level modules are tested thereafter.

[JasonM]

1. Why do we write integration tests?
   Ultimately this is to validate that the units that have been tested, when brought together also work as expected not just functional but also performance-wise.

2. What problems do integration tests solve?
   This can uncover problems where components/units, thought functionally may work on their own, when brought together do not function correctly.

3. What are the differences between top-down and bottom-up approaches?
   Bottom-up is testing methodology starting with testing at the unit level, and then bringing units together for further testing, gradually building towards the final product.

Top-down is where you start with testing the final product, then breakdown from this point with relevant test points.

[TeknoMu]

1. Why do we write integration tests?
   Because we want to test the full software and how all components work together, as opposite as unit testing that test the smallest programming unit, ie a function
2. What problems do integration tests solve?
   To expose issues with software components interfaces
3. What are the differences between top-down and bottom-up approaches?
   The difference are in the approach. Top down test software higher level modules first and smallest unit after, whilst bottom up test first programming units and then combinations of units

[AKotell]

This is seriously annoying! This reading assignment requires that I have a corporate email address, which I don’t have, and the email address I provided isn’t being accepted, therefore `i am not being allowed to read the suggested article that I can complete the reading assignment for this section of the course. Not to mention the article appears to have been written in 2008, that’s at least 13 years ago, so is it still relevant for today?

Can someone from support contact me regarding this asap, please?

[thecil]

You can also try this one: https://searchsoftwarequality.techtarget.com/definition/integration-testing

Carlos Z

[gravity]

1. we do that so we know the individual units bits of source codes of the programme work well together.
2. it solves integration issues, so that systems are interoperable.
3. top down starts with high level functional tests. bottom up started with unit testing.

[LukeS]

1. To test if a refactored unit of code has affected the operation of another unit section.
2. Can expose problems before real world integration
3. Bottom-up starts with unit testing, then as one unit passes adding on another unit and again testing. This continues until the program as a whole passes
   Top-Down starts with the program as a whole then stripping away units.

[dsutter]

1. We write integration tests in order to test an application in multiple ways, beyond unit testing.

2. Integration testing can discover problems that occur between components.

3. Bottom-up starts with unit testing and moves towards higher-level modules, whereas top-down starts from higher-level modules and works down towards lower-level modules.

[tojimmys]

1. Why do we write integration tests? Once we have unit tested the software we need to ensure that the code is stress-tested working all together, this is done through integration testing.
2. What problems do integration tests solve? Will help identify issues with how the different units of our software are working or not working together.
3. What are the differences between top-down and bottom-up approaches? top-down begins by testing multiple units through the integration test, and then testing each unit individually after, bottom-up is when you complete unit testing first, and then test the units together after.

[Oliver73]

• Why do we write integration tests?
  Integration tests are a pragmatic method of software development that takes a meticulous approach to building a product by means of continual testing and revision.

• What problems do integration tests solve?
  Integration testing can expose problems with the interfaces among program components before trouble occurs in real-world program execution.

• What are the differences between top-down and bottom-up approaches?
  Bottom-up integration testing begins with unit testing, followed by tests of of progressively higher-level combinations of units called modules or builds.
  In top-down integration testing, the highest-level modules are tested first and progressively lower-level modules are tested after that.

[Edvins]

1. Why do we write integration tests?

• To ensure that different components of code work holistically together.

2. What problems do integration tests solve?

• Integration testing can expose problems with the among program components before trouble occurs in real-world program execution.

3. What are the differences between top-down and bottom-up approaches?

• Bottom-up integration testing begins with unit testing, followed by tests of of progressively higher-level combinations of units called modules or builds. In top-down integration testing, the highest-level modules are tested first and progressively lower-level modules are tested after that.

[vegas316]

1. Integration tests ensure that the results of combining of functions. classes and methods together is working properly and providing the expected result.
2. Integration tests test larger more complex processes, and test that the combining of other code components is working as expected.
3. Top-down begins by specifying the more abstract goal, and then breaking down the high level concept into smaller and smaller pieces. Bottom up begins by building the foundational components that the system will need to run, and then build (and combine) them into more complex processes to enable the functionality desired by the business.

[jopa]

• Why do we write integration tests?
  We write integration tests so we can combine and test program units as groups in multiple ways.

• What problems do integration tests solve?
  Because we want to expose problems with the among program components before trouble occurs in real-world program execution.

• What are the differences between top-down and bottom-up approaches?
  Bottom-up integration testing begins with unit testing, followed by tests of of progressively higher-level combinations of units called modules or builds. In top-down integration testing, the highest-level modules are tested first and progressively lower-level modules are tested after that.

[bbss]

1. Integration tests are written to test more than a single unit, to test how different components interact.

2. It’s too expensive to test every integration scenario by hand. For this, we write integration tests.

3. In a top down approach, the highest-level modules are tested first, then lower level modules. In a bottom up approach, lower level modules are tested first, then higher level ones.

[Denis_Petitclerc]

1. In order to develop a process which program units are combined and tested as groups in multiple ways.

2. Integration testing can expose problems with the interfaces among program components before trouble occurs in real-world program execution.

3. Bottom-up is testing is usually done first with unit testing followed by tests of progressively higher-level combinations of units called modules or builds. In top-down integration testing, the highest-level modules are tested first and progressively lower-level modules are tested after that.

[Faisal_Harianawalla]

1. Why do we write integration tests?
   to make sure that there are no unintended consequences that were not found or something triggers the application to run differently than originally thought
2. What problems do integration tests solve?
   removing more bugs and defects from the code base
3. What are the differences between top-down and bottom-up approaches?
   One tests from the smal components end off the specturm the other does so from the highest levels.

[Semicryptpro]

1. Why do we write integration tests?

To be sure that the “sum of the parts” work properly together. Unit testing is one thing; but do all the units, modules and interfaces work together?

2. What problems do integration tests solve?
   To expose flaws or faults within the system to ensure the program executes the code as intended.

3. What are the differences between top-down and bottom-up approaches?

Top down testing would start at the highest level and tests would become more comprehensive as you descend into the code. Bottom up testing would start with unit testing, then to the modules and into the interfaces as you ascend into the program.

[MBF-Lifestyle]

1: We write integration test so as to make sure all the code components work to gether and separately.
2:Integration test solve the problem of having components not work, so as to fix it before you start letting people use it.
3:Top down approach is more high level user of the unit modules, while bottom up is more testing of unit parts.

[EllenM]

1. Integration tests are another method for testing the functionality of the software. Program units are combined and tested as groups in multiple ways.
2. Integration tests can expose problems with the interfaces among program components before they’re released to the public.
3. Top-down method tests high-level modules first then moves toward lower-level modules, whereas bottom-up starts with unit testing the individual units of the lower-level elements, then group-testing the higher-level components that rely upon them.