vstest.console with AppDomain

[ritchxu]

We have logic in our test codes that hooks up AppDomain process exit event. When running these tests with vstest.console.exe, we found out that the AppDomain was unloaded. Is there clear documentation on when vstest would create/unload new AppDomain? Is it one per test assembly, per unit test or something else?

This documentation did mention the setting of DisableAppDomain. Is it disabling creation of separate AppDomain's for running tests?