What are the different levels of testing?

by Hruska William Best Software Testing Company In Canada

Software testing ensures that the quality of a product is not compromised and this is achieved by eliminating bugs, improving the application’s efficiency and also verifying whether the product is built in line with functional, business and user requirements. Software testing follows a well-defined testing strategy along with best practices that will eventually scale up the efficiency of the software

development process and ensures a high-quality product is built. Checking the functionality, reliability, scalability, usability, reusability, performance, robustness, user experience, and security of a software product or application is the key task of software testing. In this article, you will get to know what are the different levels of software testing.

Following are the different levels of software testing:

1. Unit testing: In this testing method, individual units or modules of a software application are tested. A unit can also be called as a component and is considered to be the smallest functional part of the software program or application. When it comes to functionality, a unit needs to be in combination with other units as a single unit cannot function on its own. But, when it comes to testing, these smallest elements are tested separately.

Unit testing is performed to detect and fix errors. For each function or method, tests are written by developers. Unit testing can be refined by using specific automation tools. A lot of time is saved especially when a huge lot of small changes need to be done in the testing process. Though a unit is the smallest element, it can be detected with major bugs, hence it needs to be tested effectively.

2. Integration testing: The next level that comes after unit testing is integration testing. In this level, two or more modules are integrated and then tested as a whole. The objective is to make sure that the modules are working as expected despite being integrated. It is designed in such a way that the interface defects between functions and modules are identified. Integration testing can be further divided into two types as follows:

2.1: Component Integration testing: The interaction between the system components are tested

2.2: System Integration testing: The interaction between micro-services or systems is tested. In this testing method, third-party integrations are covered.

3. System testing: In this level of testing, the whole application is tested. The code in its entirety is tested in an environment that is in line with a finished program being deployed. The objective is to assess whether the system is in accordance with the specific requirements as stated in the earlier stages of the software development process.

System testing is at level three because it is building up in complexity compared with the least complexity of level 1 to a moderate complexity of level 2. There are two approaches to system testing, which are as follows:

3.1: Requirements based: For each of the requirements, test cases are written, so that the

requirements can be verified and met properly.

3.2: Use case-based: The patterns and scenarios as to how the finished product is being interacted with end-users are analyzed. One or more than one scenarios can be defined for each of the specific use cases. For each of these scripts that are being tested, test cases need to be written.

4. Acceptance testing: It is a testing method where end-users will be given the responsibility to test the product in a real-time environment, and thus evaluate the worth of a product from a real-time scenario standpoint. This testing method makes sure that the software product or application meets the user and business requirements. Whether or not the system is able to meet the acceptance

criteria are determined by uat testing method.

Conclusion: If you are looking forward to implementing software testing for your specific project, then do get connected with a premium software testing services company that will provide professional consultation and support on developing a crystal-clear testing strategy.