MacOS unit test on Xcode crashes

[ninjadev106]

New Issue Checklist

• [ ] I am not disclosing a vulnerability.
• [ ] I am not just asking a question.
• [ ] I have searched through existing issues.
• [ ] I can reproduce the issue with the latest versions of Parse Server and the Parse ObjC SDK.

Issue Description

Running macOS test using the Xcode test navigator crashes and the reason is "Thread11: "The class PFPin must be registered with registerSubclass before using Parse.""

Steps to reproduce

1. Click on Test Navigator on the top of Navigator area of Xcode
2. Hold the pointer over the ParseUnitTests-macOS bundle and click the Run button that appears on the right.
3. When the Test case "[QueryUnitTests testCLearAllCachedResults]" starts, it crashes in dipatch_sync(queue, block) of the PFThreadsafetySafeDispatchSync method on the PFThreadsafety.m file

Actual Outcome

Test fails.

Expected Outcome

Test passes.

Environment

Client

• Parse ObjC SDK version: 1.19.4

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[mtrezza]

Is this a duplicate of https://github.com/parse-community/Parse-SDK-iOS-OSX/issues/1677? Which test exactly fails?

[ninjadev106]

When the Test case "[QueryUnitTests testCLearAllCachedResults]" starts, it crashes in dipatch_sync(queue, block) of the PFThreadsafetySafeDispatchSync method on the PFThreadsafety.m file

[ninjadev106]

Is this a duplicate of #1677? Which test exactly fails?

I think it's not a duplicate of #1677

[mtrezza]

What is the name of the test that you start? Or does this happen with every test

[ninjadev106]

QueryUnitTests Yes, that happens with almost every test except for another crash which sometimes happens too. The another crash reason is "Thread 8: "Invalid class name. Class names cannot start with an underscore""

[ninjadev106]

The interesting point is that it doesn't happen when running all tests in the single QueryUnitTests class. It happens only when running all tests in the project bundle(ParseUnitTests-macOS)

[mtrezza]

The failing test in https://github.com/parse-community/Parse-SDK-iOS-OSX/pull/1681 is the same one described in https://github.com/parse-community/Parse-SDK-iOS-OSX/issues/1677. So is this issue a duplicate of #1677?

[ninjadev106]

Yes, this seems to be a duplicate of #1677

[mtrezza]

OK, I'll close this as duplicate and assign the PR to the former issue.

[mtrezza]

Closing as duplicate of https://github.com/parse-community/Parse-SDK-iOS-OSX/issues/1677