The purpose of integration testing is to detect bugs and problematic behaviour at integration points and verify that the connected software or applications work as expected. While unit testing ensures that each component is functioning properly, integration testing ensures that the whole system is stable. The system, in its entirety or in its component parts, is put through its paces by testing the inter-module communication channels. The goal of this type of inspection is to ensure that important components and assemblies meet all necessary standards.
A simple illustration of integration testing is as follows: Although eBay and PayPal are two separate programs, PayPal is accepted as a payment option on eBay. Integration testing is performed to ensure that the two apps can talk to one another. Another illustration would be the receipt of a confirmation email from one or both systems following a successful transaction.
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After thorough unit testing, it’s usually assumed that all the parts will fit together seamlessly in the final product. However, due to the complexity and intrinsic dissimilarity of software modules, it is often necessary to verify that the same logic was followed throughout to guarantee the system’s flawless operation and that all needs were appropriately defined. We have dedicated quality assurance personnel that can assist you in the following ways:
- They will save your money and time by using automated testing for continuous integration to find problems that were missed during unit and component testing.
- They will verify that interactions between different parts of the system are stable, and work as intended.
- They will ensure the smooth rollout of a highly integrated software application.