Overview of System Testing and End-to-end testing

End-to-end testing and System testing are always done together, however, even an experienced tester can be confused about the huge benefits that each type of testing brings and often choose only one. In this article, we will try to clarify the difference between End-to-end testing and System testing. First, in order to understand the difference between these two types of testing, we need to understand the testing stages that we must go through when developing any product.

Viewing: What is end-to-end

In the software industry, we always have to choose between having to release a product early or releasing a good quality software product. But we always need a balance between the two factors. We all expect a software product to be released soon but at the same time must be of good quality, to achieve this is very difficult.

Software testing phases

The software development life cycle begins when a part request is received from the customer. The development team will be responsible for a thorough analysis of the requirements & design of the requirements specification. The software specification requirements will help the engineering team and the development team to start their software development work. The steps involved here are explained below for your ease of understanding.

Step #1:

Based on the high-level product description, the software product is divided into different modules, then into components or into units. These units are developed independently, after being developed, these units will be tested individually called Unit Testing.

Step #2:

After making sure all the units are done as expected in terms of functionality as well as feasibility. Components, modules or sub-systems are integrated together and integration testing is carried out.

Step #3:

System Testing is performed after integration testing is performed for the first time on the same environment as the real environment. This phase is performed to check whether the functional and non-functional are in accordance with the business requirements set out or not.

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Step #4:

This is the test execution step performed by the client. This phase is performed to demonstrate that the product satisfies all customer requirements and that the customer accepts the product.

What is System testing

?System testing is done after Integration Testing & before Acceptance Testing.System testing is done to test the combination of components together into a system Whether the product is of the correct quality according to the requirements set forth or not. The main purpose of System testing is by performing functional and non-functional testing methods to detect potential defects inside the software after it has been integrated.

Non-functional testing is done to make sure the product under development can meet the requirements or not. They are done to determine the response time of an application or to check compatibility or deal with settings, performance, load capacity, security, etc.

Therefore, an application needs to be tested both functionally and non-functionally to ensure it meets the quality standards before it can be brought to market.

Importance of System Testing

System testing is a mandatory stage to perform before moving on to the next phase. Here are a few requirements that need to be checked during this phase:

It is necessary to ensure that the operation of the software is a unified unit. It is necessary to check that the product does not bypass any functional as well as non-functional requirements. The product should be tested on the same environment as the environment. actual product.It is necessary to perform product testing with the same data as the actual product data.

System Testing includes scenarios based on use cases or high-level descriptions of product behavior. Cases related to interaction with system resources are also part of system testing.

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Therefore, system testing should be performed by people who have a good understanding of the product both at the system architecture level as well as the business of the product. Knowledge of coding is not required at this stage but knowledge of system is required for a Tester.

When is System testing started

?Unit testing is done for all units without any defects. All components that have done unit test are integrated together and successfully integration testing. The environment is the same as the actual environment that is ready to do product system testing.

What is End-to-End Testing

?Software testing is an important stage to ensure software quality. Good quality products always bring higher satisfaction to both product creators and users. In other words, a quality product is about trying to eliminate defects at all levels. The term “End to End Testing” is defined as a testing method aimed at determine whether the execution of applications is as required. It is implemented end-to-end according to real-world scenarios such as: communication of applications with hardware, networks, databases and other applications.

The main reason of doing this test is to identify different dependencies of the application as well as to ensure that correct information is exchanged between different components of the system. It is usually done after completing the function testing and system testing phase of any application.

Why is End to End Testing important

? The main purpose of end-to-end testing includes:

Ensure the product developed is well coordinated with any of its subsystems.To check all the flow of the system from start to finish.To validate the requirements from the end-user perspective. To identify problems in heterogeneous environments.

When to do End to End Testing

?End to End testing is usually done when:

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A product is qualified for system testing where all the functionality is covered. When the dependent environment is defined and available to proceed with the flow. When the Tester is equipped with the necessary knowledge. design and test artifacts.When Tester has the right tools to analyze the data flow.

Difference between System Testing and End to End Testing

Here are a few differences between System Testing and End to End Testing

System TestingEnd to End Testing Ensures both functional and non-functional testing of the system Including interface testing considering all source & target systems Performed after completion of integration testing Execute upon completion of system testing for any software product All features implemented to the product will be scrutinized to uncover unexpected results. Process flows will be tested along with front end & back end. Tester must understand the functionality of the system Tester must understand the data flow and business flow of the system

System Testing or End-to-End Testing or Both

?System Testing & End-to-End Testing is often seen as the same but it is not true. They are 2 different types of testing with different test coverage. While End-to-End testing always works from the beginning to the end of the system including all dependent systems, System Testing will test same function with different set of input tuples for response evaluation. Therefore, the test coverage of these two types is different.

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Conclude

System testing needs to have the mindset of real users while end-to-end implementers need to understand the execution flow of the system. As explained above, both types of testing are important. Equal importance in the product development life cycle, to detect different defects. Hope through this article you will have a clear understanding of the two types of testing above.