Not implemented tests in the example app

[DominikZajac]

These test pages are currently not implemented, some of them due to lack of the actual feature in the app:

• CustomLoggingTests,
• DocumentExpirationTests,
• FileLoggingTests,
• FragmentTests,
• ListenerTests - this has only 1 test that has been reimplemented and extended in CollectionTests,
• PredicateQueryTests,
• VectorSearchTest.

There is also an issue with testCopyingDatabase() in DatabaseTests. Currently the test is not implemented and commented out. I tried implementing it by calling the .copy() method on the instance that we use in test suite (created in test-case.ts). I got these responses when calling the method:

• Kotlin:

  {
    "message": "not found [1, 7] (CouchbaseLite, 7)  [CouchbaseLite Android v3.2.2-21@34 (EE/release, Commit/89a453d45e@4ac2f0bdc377 Core/3.2.2 (12) at 2025-02-24T21:01:56.058665049Z) on Java; Android 16; sdk_gphone64_arm64]"
  }

• Swift:

 {
    "errorMessage": "Failed to copy database: The operation couldn't be completed. (CblIonic.DatabaseError error 5.)"
 }