Resolved mismatch stubbings in A11yTest.java

[ARMS2025]

I analyzed the test doubles (mocks) in the test code of the project. In my analysis of the project, I observed that

In the test testScriptUrlConfiguration:

• The executeScript method for the javascriptExecutor object:
  i) during test execution the method is actually called with argument URL_CONFIGURATION_TEST_SCRIPT, but is not stubbed, resulting in a mismatch stubbing (as the argument is a lengthy string, we extracted it into a private static variable and used that variable in the stub creation).

In the test testExecute:

• The executeScript method for the javascriptExecutor object:
  i) during test execution the method is actually called with argument EXECUTE_TEST_SCRIPT, but is not stubbed, resulting in a mismatch stubbing (as the argument is a lengthy string, we extracted it into a private static variable and used that variable in the stub creation).

In general, a mismatched stubbing occurs when a method is stubbed with specific arguments in a test but later invoked with different arguments in the code. Mockito recommends addressing this type of issue (https://www.javadoc.io/doc/org.mockito/mockito-core/latest/org.mockito/org/mockito/exceptions/misusing/PotentialStubbingProblem.html).

I propose a solution below to resolve the mismatch stubbing. Happy to modify the pull request based on your feedback.

[sridharbandi]

@ARMS2025 Thanks for this PR. Apart from the tests, do you have faced any issues while using this library?

[ARMS2025]

@sridharbandi No, I did not face any other issues while using the library.