DynMock is a mocking framework supports dynamic classes. Also, DynMock's current comparative tests shows that it can run mock significantly faster than FakeItEasy, Moq, and NSubstitute. Note that the current DynMock comparative tests for Moq and NSubstitute are not covering most of their functionality.
Install-Package SysSurge.DynMock -Version 0.7.5
dotnet add package SysSurge.DynMock --version 0.7.5
<PackageReference Include="SysSurge.DynMock" Version="0.7.5" />
paket add SysSurge.DynMock --version 0.7.5
This is the second alpha release adds more Moq support.