AssignableFromConstraint
AssignableFromConstraint is used to test that an object
can be assigned from a given Type.
using System;
namespace NUnit.Framework.Constraints
{
public class AssignableFromConstraint : TypeConstraint
{
public AssignableFromConstraint(Type type)
: base(type, "assignable from ")
{
}
protected override bool Matches(object actual)
{
return actual?.GetType().IsAssignableFrom(expectedType) ?? false;
}
}
}