Add more more tests for in, out and ref parameters by BadSingleton · Pull Request #1349 · pythonnet/pythonnet

As Discussed in #1287, this is an extra PR to add more tests cases, and a small fix, for the reload of methods with in, out and/or ref parameters
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Does this close any currently open issues?

No
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Any other comments?

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Checklist

Check all those that are applicable and complete.

  • Make sure to include one or more tests for your change
  • If an enhancement PR, please create docs and at best an example
  • Add yourself to AUTHORS
  • Updated the CHANGELOG