Delete cached error reports if an Exception is thrown during disk IO, preventing delivery of empty/partial reports on the next app launch

[fractalwrench]

Goal

Delete cached error reports if an Exception is thrown during disk IO, preventing delivery of empty/partial reports on the next app launch.

Additionally improves E2E and instrumentation test coverage for internal report behaviour.

Changeset

This changeset deletes a file if an exception is thrown when writing it to disk. This is intended to prevent empty/partial files being unintentionally left on disk for delivery next launch.

Added/moved existing mazerunner scenarios so that tests cover:

• If an empty file is in the cache directory then zero requests should be made
• If a partial file is in the cache directory then an internal report should be sent
• If a file is deleted before it can be sent, 0 requests should be sent

Added instrumentations tests that cover:

• If an exception is thrown when writing a Streamable, an internal error report is sent (measured by invoking a delegate) and the partial file is deleted
• If an exception is thrown when copying a NDK report, an internal error report is sent (measured by invoking a delegate) and the partial file is deleted