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Mock Limitations
Updated on Jan 29, 2026
Mock Limitations
The mocking framework strongly relies on some system types, while others are integral part of the .NET runtime, so following types cannot be mocked by the JustMock profiler:
- System.Reflection.MemberInfo
- System.Reflection.MethodBase
- System.Reflection.MethodInfo
- System.Reflection.ConstructorInfo
- System.Reflection.FieldInfo
- System.Reflection.PropertyInfo
- System.Reflection.EventInfo
- System.WeakReference
- System.WeakReference<T>
- System.IntPtr
- System.Runtime.CompilerServices.CastHelpers
- System.CannotUnloadAppDomainException
- all types in System.Globalization namespace