System Testing, Integration Testing and End-to-End (E2E) Testing

 

System Testing: System testing is carried out on the whole system in the context of either system requirement specifications or functional requirement specifications or in contest of both. System testing tests the design and behavior of the system and also the expectations of the customer. System testing: System testing is a type of testing that validates a complete and fully integrated system to verify that it meets the specified requirements. It typically includes functional testing, performance testing, security testing, and other types of testing to ensure that the system is working as expected.

System Testing is a black-box testing. System Testing is performed after the integration testing and before the acceptance testing. 

System Testing Process: System Testing is performed in the following steps:

• Test Environment Setup: Create testing environment for the better quality testing.
• Create Test Case: Generate test case for the testing process.
• Create Test Data: Generate the data that is to be tested.
• Execute Test Case: After the generation of the test case and the test data, test cases are executed.
• Defect Reporting: Defects in the system are detected.
• Regression Testing: It is carried out to test the side effects of the testing process.
• Log Defects: Defects are fixed in this step.
• Retest: If the test is not successful then again test is performed.

 
Types of System Testing:

• Performance Testing: Performance Testing is a type of software testing that is carried out to test the speed, scalability, stability and reliability of the software product or application.
• Load Testing: Load Testing is a type of software Testing which is carried out to determine the behavior of a system or software product under extreme load.
• Stress Testing: Stress Testing is a type of software testing performed to check the robustness of the system under the varying loads.
• Scalability Testing: Scalability Testing is a type of software testing which is carried out to check the performance of a software application or system in terms of its capability to scale up or scale down the number of user request load.

Integration Testing : Integration testing is a method of testing how different units or components of a software application interact with each other. It is used to identify and resolve any issues that may arise when different units of the software are combined. Integration testing is typically done after unit testing and before functional testing, and is used to verify that the different units of the software work together as intended.

Integration testing can be performed in different ways, such as:

1. Top-down integration testing: It starts with the highest level modules and integrates them with lower-level modules.
2. Bottom-up integration testing: It starts with the lowest-level modules and integrates them with higher-level modules.
3. Big-Bang integration testing: It combines all the modules and integrates them all at once.
4. Incremental integration testing: It integrates the modules in small groups, testing each group as it is added

End-to-end Testing: End-to-end testing is a type of software testing used to test whether the flow of a software from initial stage to final stage is behaving as expected. The purpose of end-to-end testing is to identify system dependencies and to make sure that the data integrity is maintained between various system components and systems. End-to-end testing: End-to-end testing, also known as end-to-end functional testing, is a type of testing that validates the flow of a system from start to finish. It simulates the real-world use of the system and tests it as a whole, including testing the interactions between different components.