Integration Testing - Reading Assignment

Blockchain Business Course
#423

1- to make sure the software works as a whole.
2- Interaction among different units of the software.
3- The order in which the unis are tested. Bottom-up starts testing the lowest levels. On the contrary Top-down approach begins with the top integrated moduls.

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#424

  1. We write them to test the code making up an app and all the interfaces linking every component together.

  2. They help finding errors in a mode like an user would use it/ real world use. They test how the subsystems and interfaces work individualy and together and if there are any errors.

  3. Top-down= tests higher levels of software and it goes lower and lower in to the code.
    bottom-up= it starts at the bottom components and works up

It is also called unit testing and should be done first as it tests individual units that clearly show us where an error occured rather than just showing an error.

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#425

  1. Why do we write integration tests?
    Because in addition to testing parts/units of the application we also want to test how they function as the sum of the parts.

  2. What problems do integration tests solve?
    The verify the functionalty of the whole application.

  3. What are the differences between top-down and bottom-up approaches?
    Top-down means you start with integration tests and follow up with unit tests. Bottom-up it’s the other way around.

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#426

  1. Why do we write integration tests?
    We write integrations tests so that program units can be combined and tested as groups in multiple ways.

  2. 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.

  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.

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#427

1: To test the large collections of functionality with the data in the code.

2: Finds bugs or errors in the code that could have been caused by another programmer or company working on the software.

3: In unit testing, Top-down means larger sections of the code are tested first then smaller sections of the code are last. Bottom-down is vice versa the last statement.

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#428
  1. Coders write integration tests when they want to test multiple units in a multitude of ways.
  2. Integration tests solve problems with interface components.
  3. Bottom-up approaches begins with unit testing moving higher modules and builds of code. Top-down approach the highest level modules are tested first and then working down to lower levels.
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#429
  1. To test program units as a group in multiple ways.
  2. Integration testing can expose problems with interfaces among program components before trouble occurs in real-world program execution.
  3. Bottom-up integration testing begins with unit testing, followed by tests of a progressively higher-level combinations of units called modules or builds. Top-down integration testing, the highest level modules are tested first and progressively lower level modules are tested after.
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#430
  1. Integration tests confirm that the units are working in a comprehensive way.
    2 integration tests solve how units work together and the potential problems associated
    3 bottom up tests slowly add the units together to test pieces into the whole and top down tests the whole into the pieces
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#431

  1. Why do we write integration tests?
    To combine program units and test them as groups in multiple ways.

    A component of Extreme Programming (XP), a pragmatic method of software development that takes a meticulous approach to building a product by means of continual testing and revision.
    **I imagine this is very useful for mission critical projects (as well as others, but heavier here).

  2. What problems do integration tests solve?
    Problems with interfaces among program components before trouble presents itself in real-world program execution.

  3. What are the differences between top-down and bottom-up approaches?
    Top-down: An approach to integrated testing where the top integrated modules are tested and the branch of the module is tested step by step until the end of the related module.

    Bottom-up: An approach to integrated testing where the lowest level components are tested first, then used to facilitate the testing of higher level components. The process is repeated until the component at the top of the hierarchy is tested.

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#432
  1. Why do we write integration tests?
    To combine the units and then test them in order to ensure they are working together as expected.
  2. What problems do integration tests solve?
    They solve problems between the units (like when combining them). They are the next level of testing after each unit works for itself.
  3. What are the differences between top-down and bottom-up approaches?
    When doing it bottom-up you start adding more and more units and test them and when you do it top-down you start with the whole and then just start testing different parts.
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#433

  1. Why do we write integration tests?
    To assure that software components and their interfaces work as expected.

  2. What problems do integration tests solve?
    Testing not only units but the whole programm.

  3. What are the differences between top-down and bottom-up approaches?
    Bottom-up tests smallest units first and then the combination of components
    Top-Down first tests on a high level and then the single units.

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#434

  1. Unit testing tests only individual parts of the program, whereas integration testing combines different modules in the application and tests as a group. Integration testing is needed because even though all components passed unit testing, when combined, some component can cause negative effect to other component(s), and integration testing can check this.

  2. Integration test checks for fault when different components are combined.

  3. Top-down approach tests the highest-modules first. On the other hand, bottom-up approach tests the lower-level modules (uint testing) first.

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#435

  1. Why do we write integration tests?
    A: To ensure that the application as a whole behaves as expected. The overall behavior cannot simply be inferred from the unit tests as problems can occur in the interaction between components

  2. What problems do integration tests solve?
    A: It exposes problems that may occur in the interface between program components which cannot be anticipated by simply testing the components

  3. What are the differences between top-down and bottom-up approaches?
    A: 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.
    In a comprehensive software development environment, bottom-up testing is usually done in first place, followed by top-down testing.

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#436
  1. Why do we write integration tests?
  2. What problems do integration tests solve?
  3. What are the differences between top-down and bottom-up approaches?

1.) So we can expose problems with the interfaces among program components before trouble occurs in real-world program execution.
2.) Integration tests find errors that can happen during the whole use of an application. The integration tests test if all the systems are working individually and altogether without any errors. It should simulate the real-world use of an application.
3.) The top-down approach is used when the whole system is together and you first test the whole system and then go systematically to the individual parts of the system. Bottom-up approach starts at the bottom with the low-level approach before testing the higher-level combinations of units, which are called modules or builds.

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#437
  1. Why do we write integration tests? Integration tests are written to test a combination of units as a group
  2. What problems do integration tests solve? Problems with interfaces among program components
  3. What are the differences between top-down and bottom-up approaches? Bottom-up integration testing begins 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.
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#438
  1. The reason why we write integration test is to test all programs and making sure all of our software programs are running correctly.
    2.The problems the intergration test solve is exposing problem in the interfaces among program components before a problem occurs in a real world time execution.
    3.The top down aproach in test usually start the test from top to bottom of the software, and bottom up starts test from bottom up.
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#439
  1. To check wether the whole code works together as well
  2. It checks whether all parts of the code work together as planed
  3. Top-down- testing the whole code and the going down to the different parts of the code
    bottom-down- staring with parts of the code before testing the whole code
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#440

1: Integration tests are made to test progressively more complex program units in a multitude of ways to save time manually testing and to make sure the all aspects of program run as they should.
2: They solve hidden problems that may arise when combining different segments of code together. What may operate correctly by itself may not operate the same way when combined with other source codes.
3: Bottom-down testing starts with doing unit testing of the most basic source codes and then works its way up to more and more complex integration testing. Top-down is just the opposite where the most complex code is tested first and works its way down to unit testing.

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#441
  1. Why do we write integration tests?
    In order to combine program units and to test them in multiple ways, as they could work individually but not together.
  2. What problems do integration tests solve?
    I&T exposes potential errors before program execution, which could otherwise cause applications or programs to fail. It would expose the combination of several units not working together, which you would not identify through unit testing.
  3. What are the differences between top-down and bottom-up approaches?
    Bottom-up is first unit testing and afterwards progressively higher level modules or builds, whilst the top-down approach is first starting with the higher level modules or builds and after progressively lower-level modules are tested.
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#442

To be shure the software components and interfaces works well.

Integration tests check out if the different components works when combined.

Top-down tests highest-modules first and bottom-up tests the lower-level modules first.

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