Software modules must work together as expected.
During system integration testing, we conduct the following test stages:
- drawing up a test plan;
- creating test cases and case files;
- performing tests after integrating modules;
- identifying errors;
The primary task of integration testing is to find errors related to the interaction of modules of a system or several systems. This software QA testing allows us to simulate user actions and quickly receive confirmation that the software product successfully interacts with other systems. As a result, all adjacent structures and modules of the same system must work smoothly.
In the Bottom Up approach we test the modules of the lower levels first, then those on the way to the top of the hierarchy. This approach requires the readiness of all assembled modules at all levels of the system and allows determining application readiness based on test results.
Unlike the Bottom Up approach, in the Top Down, we start testing from high-level modules and then go down, so basic functionality is tested only at the end of the cycle. Low-level modules are substituted by stubs, then, when ready, are replaced by real active components.
Big Bang approach saves time on testing, as we bring together all modules of all levels and then tested them as a whole. But it is important to remember that this approach requires careful study of test cases, as it may be difficult to track down the cause of the failures due to the late integration.
Integration Testing Advantages
The advantages of each integration test lie in the prevention of the occurrence of critical errors in software operation, a decrease in the influence of the human factor, and saving costs of fixing defects. Integration tests can be used at any stage of software development and testing and can cover any amount of program code in one sprint.
Integration testing may benefit if the development requirements and structure of the created logic of your software are repeatedly subject to adjustments and revisions. It will help to verify the correctness of systems interactions and the accurate data processing throughout the entire business process, also to check the logic of the relationships between the larger parts of an application and identify the defects that arise when the modules are combined.
QAwerk’s efforts enabled internal developers to eliminate bugs and improve the app’s stability. Communicative and accommodating, the team proved capable of identifying technical errors.
We've worked with QAwerk to handle the QA of our native desktop app. They've done a tremendous job and even went out of their way to ensure the quality of the app. We'll continue working with them in the future.
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