Testing quartz scheduler in xUnit

[khanhna]

Describe the bug

The Scheduler not running as expected when testing with xUnit

Version used

v3.2.3, on .Net Core 3.1

To Reproduce

xUnit test repo

1. Run all the test.
2. Remove the Skip parameter on Should_Mark_Book_As_Available test.
3. Run Should_Mark_Book_As_Available test separately.
4. Run all the test again.

Expected behavior

Every tests should all be pass.

Additional context

• This test demo using quartz scheduler integrated in Masstransit.
• The test Should_Mark_Book_As_Available often failed.(not always fail, just most of the times, and always passed if running separately).

[khanhna]

A temporary workaround

Put the [assembly: CollectionBehavior(DisableTestParallelization = true)] for all the test to run sequentially.