tests: import the config fuzzing tests#453
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Introducing some JavaScript code... But this will only be part of our development workflow and seems manageable and extensible. And it already proofed useful (#450, #451).
LGTM overall, I left some tiny inline comments.
We can (should) always extend/adopt the schema descriptions for future Netplan settings.
I see there are some comments in tests/config_fuzzer/runner.sh, can we maybe have a proper tests/config_fuzzer/README.md to document how to use this, e.g. locally?
Maybe we could also move the schema definitions to tests/config_fuzzer/schema/, to unbloat the primary directory of the fuzzer?
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The config_fuzzer will generate random netplan YAML files and use them to test libnetplan. It also adds a new Github workflow to run the tests. This workflow will not block merges if it fails.
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This is a project I've been working. It will use json schemas to generate random YAML files. It implements support for most of the interface types and properties support by Netplan. I used JavaScript (note that I don't have much experience with it :P) to use the json-schema-faker project.
The config_fuzzer will generate random netplan YAML files and use them to test libnetplan.
It also adds a new Github workflow to run the tests. If a crash or memory issue is detected, the workflow will fail in the end. It's being executed in this PR.
There is a lot of room for improvement but this is a good start.
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make checksuccessfully.make check-coverage).