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About Test Automation: Test automation is the use of software to control the execution of tests, the comparison of actual outcomes to predicted outcomes, the setting up of test preconditions, and other test control and test reporting functions. Commonly, test automation involves automating a manual process already in place that uses a formalized testing process.

There are two general approaches to test automation:

1. Graphical user interface testing. A testing framework generates user interface events such as keystrokes and mouse clicks, and observes the changes that result in the user interface, to validate that the observable behavior of the program is correct.
2. Code-driven testing. The public (usually) interface to classes, modules, or libraries are tested with a variety of input arguments to validate that the results that are returned are correct.

Source: Wikipedia

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