CATROID-1658 Fix failing test ActionBarUndoSpinnerTest.testUndoSpinnerAction

[hannesweilharter]

Instead of mocking the File class, real sound and look files are generated. This seems to fix the failing testcase.
Additionally, the file was refactored to Kotlin

https://catrobat.atlassian.net/browse/CATROID-1658

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[harshsomankar123-tech]

@hannesweilharter IMO, could you please refactor this test file to Kotlin as well? Since we are currently refactoring many files, and you are already working on fixing the failing tests, I think it would be good if we also migrated this one during the process.
Thanks!

[harshsomankar123-tech]

@hannesweilharter Thanks! LGTM

[reichli]

Hi!
Looks good - thanks for the fix! (and the refactor)
I just found one little nitpick though that should be easy to address. After that we can merge it :)

[reichli]

Could you please import the functions like Espresso.onView directly instead of the whole package?
Then we could get rid of all those prefixes Espresso... , ViewMatchers... like in the old java-version of this test.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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[reichli]

Looks good - thank you for the fix!