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What is End-to-End (E2E) Testing? And Its 5 Advantages

End-to-End Testing

End-to-End (E2E) Testing is a critical methodology that aims to check software application interaction with hardware, network connectivity, external dependencies, databases, and other integrated peripherals. It tests the entire software product from beginning to end to determine the software product’s system dependency. E2E testing ensures that the data integrity between the product and system is maintained.

End-to-End Testing ensures if the application flow behaves as expected to enable seamless communication between the application and the system. A smooth communication pattern optimizes the data and workflow between the related applications. Such testing methods allow you to identify issues and increase the overall productivity of the application. You can detect the redundancy in the application, due to which the entire software can crash. By performing End-to-End testing, you can increase test coverage by involving different sub-systems and check the performance, stability, and integration of the software application.

Engineers can deploy End-to-End browser testing solution to test the system dependency of the browser application. Using an appropriate testing tool, you can write test scripts easily and quickly and execute automated test operations in real-time to build your browser application from start to end. Besides checking the application’s integrity with its interfaces, E2E testing mimics the actual production scenario, such as software communication with the database, network, and hardware. E2E testing allows you to validate the system under test and its components for integration and data integrity.

When To Apply End-to-End Testing?

The software market is growing exponentially in the present times. Due to the technological boom, the digital market is generating high revenue. The global business software and services market size was valued at USD 322.91 billion in 2018 and is expected to expand at a CAGR of 10.7% from 2019 to 2025. However, to generate high ROI and a greater conversion rate, you need to ensure that your software can deliver optimum customer experience. You need to perform end-to-end tests to develop reliable, stable, and scalable software that can integrate holistically with other components. Modern software applications need to integrate and interconnect seamlessly with multiple systems to enable a smooth workflow.

End-to-end testing checks the essential functionalities of the software. E2E testing methods are applied in different scenarios. Finished products and systems should be tested comprehensively before it is released in the market. If any glitch or the functioning is not satisfactory, you can re-run the E2E test scripts to identify the faulty segments.

E2E Testing Broadly Appeals To:

  • Developers: Developers use E2E tests help to identify feature issues before the QA phase. E2E testing helps the developers to reduce the frequently occurring bugs during development.
  • Testers: E2E methods help testers write tests to verify and simulate real-world behavior to avoid application problems.
  • Managers: End-to-end testing is a Software testing methodology that helps the manager assess the application’s progress and effectiveness. It helps to understand to address the gaps in an application for optimizing user experience.

5 Advantages of End-to-End Testing

  • Ensures Complete Correctness and Health of the Application

    End-to-End testing checks the software application’s performance through the data layer, business layer, integration layer, and presentation layer for ensuring the correctness and health of the software application.
  • Increases Confidence in the Application

    E2E testing is performed to get assured and confident about the software application’s functionality across different devices and platforms.
  • Reduces Future Risks

    Since E2E testing checks the application’s performance from beginning to end, the developers can identify any glitch before the product is marketed. Hence, the errors are rectified before it gets magnified.
  • Decreases Repetitive Efforts

    E2E testing is a comprehensive testing procedure that minimizes the probability of frequent breakdowns in the application.
  • Reduces Costs and Time

    End-to-end testing scripts can be re-run multiple times to check the performance of the application. It is a cost-effective and time-saving testing method as it eliminates the need to perform tests at a later stage.

End-to-End Tests Vs. Functional Tests

End-to-End testing helps to ensure that the integrated components of an application function as expected. It is executed after functional testing and system testing is completed.

Functional testing is a quality assurance process and is performed to test each software application function by providing appropriate input and verifying the output against the applicable requirements. It validates the software system against the functional requirements/specifications.

End-to-End Testing Lifecycle

It consists of four components.

  1. Test planning specifies the key tasks, schedules, and resources.
  2. Test design is performed for test specifications, test case generation, to analyze associated risks, usage analysis, and schedule tests.
  3. Test execution is used for executing test cases and for documenting the testing results.
  4. Results analysis is performed to analyze test results and to perform any additional testing.

To Conclude:

Performing End-to-End testing has many advantages. It ensures the correctness of the application, verifies system flow, and analyzes the application’s integration with the subsystem. E2E testing helps you to develop a reliable and stable product that supports a great user experience.

You may also like to read:
  • Software Testing Best Practices for Pros
  • What Is Operational Acceptance Testing?
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