Integration Testing - Reading Assignment

Blockchain Business Course
#463

  1. Why do we write integration tests? - To expose faults in programming between software modules when they are integrated.

  2. What problems do integration tests solve? - Problems between software interfaces with databases, hardware interfaces, changing client requirements that have not be unit tested. Any issues with interfacing between modules.

  3. What are the differences between top-down and bottom-up approaches? - Top-Down: Top level modules are tested following the control flow of a software system. Higher level modules first then lower level modules. Bottom-Up: Lower levels modules are tested first to to facilitate the testing of higher level modules until top level modules are fully tested.

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#464

  1. Integration tests are wrote and used, to expose any potential problems within interactions between different program components so troubles can be eradicated before the programs are executed in real world use.

  2. Any potential operational problems between program component interactions.

  3. 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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#465

  1. Integration tests are a comprehensive way of testing a system in its entirety and can expose problems with the interfaces among program components before trouble occurs in real-world execution.

  2. Integration solves the problem of testing single components and the system as a whole, top-down, bottom-up and in a hybrid fashion. It’s designed to mimic scenarios it will encounter in customers’ computers, systems and networks.

  3. Bottom-down tests a system from the bottom layer of abstraction, up. And top-down tests a system from the higher level of abstraction, down.

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#466
  1. Integration tests ensure that there are no bugs in the code before releasing it to the users. Each component is tested individually and then as a part of the entire system.
  2. Integration tests uncover bugs that may only appear when the new component is integrated into the system.
  3. Bottom up approaches start with the user level code and work their way up the code chain and top down starts at the top of the code chain and works down to the user
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#467

  1. to test if all units of the program work together.

  2. Integration testing can expose problems with the 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 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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#468

  1. Why do we write integration tests?
    In order to ensure that different parts of the same project combine and work together. Because usually in big projects different teams work on different parts and integration is very important.

  2. What problems do integration tests solve?
    Seeing if any problems are detected when different components or parts of the project/program communicate/work together.

  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.
  • Top-down integration testing, the highest-level modules are tested first and progressively lower-level modules are tested after that.
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#469

  1. Because we want to test them individually and as a whole to make sure it is running as it should be.

  2. Integration testing is done to see whether the components and its interfaces are working individually and together without any problem.

  3. The bottom-up method starts with unit testing and progressively linking all the components as a whole. The top-down starts testing at higher level of the software and progressively tests the lower levels of the code.

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#470
  1. To make sure the different code units work together correctly.
  2. It provides a full check of the complete end-to-end application.
  3. Top-down starts at the top level, and go deeper into the application structure, whereas bottom-up starts with unit testing, then integration testing.
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#471

1.- We are looking to test the entire system and integration does this by parts.
2.- They solve the problem of finding bugs/problemas on both ends of the system.
3.- Top-Down: Is testing larger parts of the system until you reach units - Bottom-Down: Starts by testing units and then moving forward with larger parts of the system.

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#472

  1. Integration tests are important beyond unit testing as there are potential out conflicts when many components are combined in particular states. While each unit may satisfy unit testing in isolation, integration tests may fail due to unforeseen conflicts between application components.

  2. Integration tests solve for high-level module output discrepancies. They compare how an application should respond given a multiple states of the individual modules, and compares the output to what is expected. If the test arrives at the same conclusion as the expectation, then the test is successful. If not, then the developer should have a better idea of what’s going wrong and where.

  3. The top-down testing approach generally begins with testing if the application works as a whole, down to integration testing where the interface responds as expected given all of the units working together. And then testing the individual components in isolation.
    Bottom-up testing approaches starts testing from a granular level where each component of the application is tested, and once these are all satisfied, integration testing begins and then real world UI testing.
    The main difference is that bottom-up testing makes sure everything is right from the get-go and bugs can be fixed as testing occurs, assuming you require all tests to pass at every stage of the entire testing process. The benefit of this is that little time is wasted by having to redo tests that have already succeeded. This comes at the cost of not knowing higher-level problems until later on in the testing stage.
    Top-down approaches will give the developer an idea if things are seemingly working accordingly very early on in the testing phase. The issue here is that you may pass integration testing and then find a problem with one of the units. Here, once you’ve fixed the unit problem, you’d have to restart the testing phase.

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#473

1 - We write integration tests to ensure that software components (units) work together as designed. This tests the boundary conditions of each of the components.

2 - Integration tests test the interfaces between software components

3 - Top-down testing starts with the integration testing and proceeds with progressively more granular testing. Bottom-up testing starts with the unit tests and adds integrations.

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#474
  1. These tests are written to expose problems with the interfaces among program components before trouble occurs in real-world program execution.
  2. They identify problems with the way different program components interact with each other.
    3.Top down testing begins with the highest order of code and tests down from this bigger code to individual units. Bottom up works in the reverse way.
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#475
  1. It is the next step in the testing proccess. It is to make sure the individual software modules work together.
  2. They test the They slove the problems of the app working correctly from frontend to backend.
  3. Bottom up tests the code from the smallest pieces of code like funtions and then tests the next level all the way to the end use case. Top down test the whole first and then moves its testing down to the smallest pieces of code.
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#476

  1. We write integration tests to expose problems with the interfaces among program components before executing them in real-world program execution (e.g. deploying a smart contract).

  2. Integration tests solve the problems that can later occur when customers & systems start using the applications.

  3. Bottom-up method:

  • begins with unit testing
  • next are tests of progressively higher-level integration of units called modules or builds

Top-down method:

  • highest-level modules are tested first
  • progressively lower-level modules are tested after that

These two methods follow each other.

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#477

  1. We write integration tests to expose problems before trouble occurs in the real world program.

  2. Integration test can help solve problems with the interfaces among program components.

  3. Bottom-up testing begins with unit testing, followed by test 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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#478

It will expose any problems and makes sure that different components of the code are all synced correctly and working harmoniously before you send it into the real world.

Hopefully you will find errors and bugs in your system and that your system can operate with its intended hardware.

Top down starts with the high order code and tests down the line.
Bottom up starts with individual units and tests its way up the line until all code is tested.

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#479

  1. We write integration tests to combine and test individual units in multiple ways.

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

  3. Top-down approaches focus on the highest-level modules first and progress down to the lowest levels. Meanwhile, the bottom-up approaches begin with unit testing and progress to the highest-level modules. In short, top-down starts up and goes down while bottom-up starts at the bottom and goes up.

Thanks!

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#480

  • Why do we write integration tests?
    To know if our program functions when pieces of code are joined together. For example, when unit testing we found out that all our codes work do what they are supposed to, but when we integrate it, some codes execute faster than the other and yield unwanted results. That’s why we need to test it as a whole or in groups.

  • What problems do integration tests solve?
    It solves the problem relating to how your app or program should work. It’s basically a dry-run before the actual event. It can solve errors in the code structure and interfaces among program components.

  • What are the differences between top-down and bottom-up approaches?
    Top-down starts with the highest-level module (the program as a whole) down to its individual components (unit testing)
    Bottom-up starts with unit testing followed by higher levels of code combinations like modules or builds

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#481
  1. Why do we write integration tests?

Integration tests can expose problems with the interfaces among program components. We write them to prevent problems in real - world scenarios.

  1. What problems do integration tests solve?

Finding bugs and errors within various components in an environment that simualtes real world applications :slight_smile:

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

Bottom - down is usuall done first, followed by top - down. Bottom - down begins with testing single units, and progressing to testing higher - levels of combinations (modules or builds). In top - down it’s the opposite.

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#482
  1. Why do we write integration tests? expose problems with the interfaces among program components before real world troubles occur.
  2. What problems do integration tests solve? Identify problems between units and modules before issues occur in real world.
  3. What are the differences between top-down and bottom-down approaches? bottom up testing- start at the unit layer then move up to higher-level combinations of units called modules or builds. Top-down testing- highest level modules are tested first, followed be lower level modules
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