Integration Testing - Reading Assignment

[petroslk]

1. to check the program not only separate but also after combination
2. Integration tests find errors that occur during the complete use of an application.
3. Top-down starts from higher levels of the software and then tests progressively lower and lower levels of the code. Bottom-up starts at the bottom or low level components and works its way up.

[William_Kuang]

1. Because it is important to simplify the integration of different parts of the source code and check whether they have any issues communicating one with another after doing unit testing.

2. Integration tests solve the issue when two different component from different process/network boundaries have issues communicating with one another. Developers can identify which side of the communication is failing. Basically, whether parts of the source code is interoperable or not with one another.

3. top-down testing focuses on the main function of the source code while bottom-down (up?) focuses on integrating the lower modules of the source code instead.

[FreeBird81]

1. To test the modules components when integrated to verify that they work as expected. One of the agile methodologies of software testing.

2. Bugs are identified early in the software development life cycle. Integration testing also solves system level issues like broken database schema and mistaken cache integration.

3. In the top-down integration testing, the teams test the top level units first and then perform step-by-step testing of lower level units. And bottom-up integration testing is when the testing starts from the lower units of application and then it gradually moves up.

[Murisoja]

@ivan

Welcome to the discussion about this reading assignment.

Leave your answers to the questions below in this thread. If you have any questions or you want to discuss something connected to the assignment feel free to do it in this thread as well, but please everything to the topic.

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. integration test helps us find problems between components.
2. Interoperability between systems, to expose problems with the interfaces among program components.
3. Top-down starts high level functional test cases, or user scenarios. Bottom-up integration testing begins with unit testing.

[dhealy7]

1. To find faults between software units and ensure the whole system operates as required
2. To identify issue between units of code
3. Top down testing starts with higher level modules and finishes with lower ones, Bottom up is the reverse

[supertramp007]

1. Why do we write integration tests? because it can expose problems with the interfaces among program components before trouble occurs in real-world program execution.
2. What problems do integration tests solve? test the functionality and integration of software
3. What are the differences between top-down and bottom-down approaches? In top-down integration testing, the highest-level modules are tested first and progressively lower-level modules are tested thereafter. The bottom-up process starts with unit testing followed by progressively higher level tests of combinations of units otherwise known as modules or builds.
   .

[Arantza]

1)Why do we write integration tests?
Integration tests are written to ensure all separate parts of a project work together
2)What problems do integration tests solve?
They find errors on user interface, Testing to see if all things work together and seperate when necessary.
3)What are the differences between top-down and bottom-down approaches?
Top-down takes the highest-level program first. Bottom-up takes the lower-level program first.
Bottom up is the recommended approarch 99 percent of the time.

[Y2z3H]

1. As a result of which programme units can be merged and tested as groups in a variety of ways

2. Integration testing can reveal issues with software component interfaces before they become difficulties in real-world programme operation.

3. Unit testing is the first step of bottom-up integration testing, which is followed by tests of progressively higher-level combinations of units termed modules or builds. The highest-level modules are checked first in top-down integration testing, followed by lower-level modules.

[Chris83]

1. To be able to test how units and modules work together in groups in multiple ways.

2. It can identify problems with the interfaces among software components before trouble occurs in real-world program execution.

3. Top-down is testing the program code from the highest builds and modules down to the lowest units while bottom-up starts from the lowest units and work up to the highest modules and builds.

[TMFM7]

1. Integration testing, also known as integration and testing (I&T), is a software development 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 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.

[Aleksander]

1. Integration test are written to test groups of units in multiple way. I&T can detect problems among program components before the whole product gets to real word and costumer use.

2. Integrational test can detect problems with integrity of program, so how each part of a code (or which functionality) behaviors in different combinations and does it have any negative influence on the whole program.

3. Top-down method verifies programme from the highest modul to lowest modul and unit, so first it test programm as the whole than checks lower levels of moduls, down to the unit.
   Bottom-up wrks in reverse: starts from the units level and then climbs to higher levels, checking them as groups and closters.

[Allistair_Trent]

• Why do we write integration tests?

To ensure the the code functions properly together as a cohesive whole.

• What problems do integration tests solve?

It evaluates the compliance of a system or component within specific functional requirements.

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

Top down methods such as “big bang” are very effective for saving time but can be more complicated if the results are not recorded properly. Bottom up tests all individual components befre progressing to the next level of integration etc…unit all hierarchys are checked.

[alemr]

1. Why do we write integration tests?
   –> To check if the modules, tested previously on the unit test, are working together.

2. What problems do integration tests solve?
   –> this “exposes defects at the time of interaction between integrated components or units.” So, it’s closer to the real using by a user and it’s intend is to find failures in this perspective.

3. What are the differences between top-down and bottom-down approaches?
   –> Top-down: Starts by the higher level modules tested together with nearest lower level modules. Then is adds more low level modules every round.
   Bottom-up: Starts by the lowest level modules being tested with their parent modules. Every round the parents of the highest level from previous round is added and then tested again till reach the highest levels.

[CryptoUnicorns]

1. Integration tests are written to check the good functionality of the interactions between different programme components and to spot the eventual errors with this interface

2. Integration tests solve the interoperability to improve the workflow between the different components of the software

3. Both approaches belong to software’s development, first the bottom up one where the smallest part of code is tested and progressively higher level of grouped code - modules, then the top-down approach tests the highest combinations of units down until the units of code are checked.

[Mohamed_Farah]

1. Integration tests program units when they are combined and in multiple ways. This is done to expose problems when different programs interface.

2. Problems with different components of the program interfacing.

3. Bottom -up begins by testing the lowest level component of the application i.e unit, to testing progressively higher modules or builds. Top-down has the opposite approach testing higher level modules or builds then working your way towards the lower level modules.

[Fjell]

1. We write integration tests to combine program units and test them as groups in multiple ways, during application development.
2. Problems that integration tests solve include any problems with the interfaces among program components before trouble occurs in real-world program execution.
3. The differences between ‘top-down’ and ‘bottom-up’ approaches are that bottom-up testing begins with Unit Testing followed by integration tests of progressively higher-level combinations of modules. In top-down testing, the highest-level modules are tested first and progressively lower-level modules are tested after that.

[DaanBoshoven]

1. Integration testing can expose problems with the interfaces among program components before trouble occurs in real-world program execution.
2. Integration tests find errors that occur during the complete use of an application.
3. 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

[Crypto_PONY]

1. They are done in a bid to test components of a software collectively to see how they perform together not just as individual units.

2. Integration testing solves problems like;

• interoperability issues between components running simultaneously
• detecting and correcting potential errors with the interfaces of components when changes are made to any part of a component.

3. Top-down approach testing method tests the highest level of software components first, then progressively lower level modules. While,
   Bottom-up approach testing method begins with unit tests followed by progressively higher modules/builds.

[FunsyH]

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

[Guavajelly]

1. Integration tests are written to test the interfaces inside the program component codes making sure all components run without any hitches.

2). Integration tests solve issues with the smooth operation of the different units of code when adding or editing to the program.

3). In top down integration testing, The highest level modules are tested first and then continue, progressively, to the least of units. While Bottom up approach, testing starts on the smallest units and ends with the modules or builds.