<PackageReference Include="NUnit" Version="3.6.0" />

GlobalSettings

public static class GlobalSettings
GlobalSettings is a place for setting default values used by the framework in performing asserts. Anything set through this class applies to the entire test run. It should not normally be used from within a test, since it is not thread-safe.
namespace NUnit.Framework { public static class GlobalSettings { public static double DefaultFloatingPointTolerance; } }