• UI layer automation testing:

    User interface testing is an operation used to test that the application is functioning correctly. UI testing can be performed manually by a human tester, or it can be accomplished automatically with the use of a software program. Automated UI layer testing is the automation of manual tasks. In the today's world, every Software testing company requires the automation skills in each engineer.

    Advantages of UI layer testing:

    1) Tests are being performed precisely for running the same operations each time, thereby eliminating human error

    2) We can test how the software respond under the repeated execution of the same operations.

    3) We can program sophisticated tests which bring out the hidden information from the application.

    4) We can build a suite of test cases that covers every feature in the entire application.

    5) We can use the tests again on different versions of application, even if the user interface is being changed.

    6) A better quality of software is ensured since we can run more tests in less time with fewer resources.

    7) Automated tools obviously runs tests significantly much more faster than human users.

    8) Since the number of resources for regression test are reduced therefore it is economical as well.

    Disadvantages of UI layer testing:

    1) Proficiency is always required to write and execute the automation test scripts.

    2) Debugging the test script is always a major issue. If there is any error present in the test script, then sometimes it may lead to deadly consequences.

    3) Test maintenance is expensive in the case of playback methods. Even though, there occurs a minor change in the GUI, the test script has to be replaced by a new test script.

    4) The maintenance of test data files is usually difficult, if the test script tests more screens.

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