Test issue: assertion can fail during variables (de-)serialisation test but tests report as successful.

[Moderocky]

Skript/Server Version

2.10.0

Bug Description

There's a test that saves all the variables and loads them again and checks they're equal (to make sure serialisation is working).
I noticed when I had a bad serialiser for one type that the tests still report passed even if this throws an assertion error.

(Note: the serializer is fixed in #7455.)

Expected Behavior

The errors should constitute a failure rather than just being printed and buried in the log.

Steps to Reproduce

Run the tests.

Errors or Screenshots

Other

No response

Agreement

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