In Tosca, what is the major benefit of the function Rescan?
The correct answer and explanation is:
The major benefit of the Rescan function in Tosca is its ability to refresh or update the object mapping and identification in the application under test. This is especially useful when the UI of an application changes during development, or when certain elements on the screen are not detected properly. The Rescan function ensures that Tosca can effectively identify the elements of the application, even after updates or changes, without requiring manual intervention or modification of the test scripts.
When performing automated testing, it is essential for the tool to accurately identify objects (like buttons, text fields, and links) in order to simulate user interactions and verify the application’s behavior. If the application UI changes (e.g., new elements are added or existing elements are modified), the previously recorded object identification may fail. This is where the Rescan function comes into play.
By using Rescan, Tosca automatically searches for and updates any object properties that may have changed. It matches the current state of the application’s UI with the objects in the test scripts, making necessary adjustments to reflect those changes. This significantly reduces the time and effort required to manually adjust test scripts, especially when dealing with large-scale applications where many objects and elements are involved.
In addition, Rescan can be used to verify whether the mapping for any object in the application is still valid or if it has become obsolete due to UI changes. It ensures that the tests are always running against the most up-to-date version of the application, improving the accuracy and reliability of automated tests.
In summary, the Rescan function in Tosca is beneficial for maintaining the accuracy of test automation by dynamically updating object mappings in response to UI changes. This helps testers save time, reduce errors, and keep tests in sync with the evolving application.