///<summary>
/// checks, whether <paramref name="target"/> supports the methods of <paramref name="requiredType"/>.
/// Supports testing transparent proxies.
///</summary>
///<param name="target">the target instance or <c>null</c></param>
///<param name="targetName">the name of the target to be used in error messages</param>
///<param name="requiredType">the type to test for</param>
/// <exception cref="ArgumentNullException">
/// if <paramref name="requiredType"/> is <c>null</c>
/// </exception>
/// <exception cref="NotSupportedException">
/// if it is not possible to invoke methods of
/// type <paramref name="requiredType"/> on <paramref name="target"/>
/// </exception>
public static void Understands(object target, string targetName, Type requiredType)
{
ArgumentNotNull(requiredType, "requiredType");
if (target == null)
{
ThrowNotSupportedException($"Target '{targetName}' is null.");
}
Type targetType = null;
if (RemotingServices.IsTransparentProxy(target))
{
#if !NETSTANDARD
System.Runtime.Remoting.Proxies.RealProxy rp = RemotingServices.GetRealProxy(target);
IRemotingTypeInfo rti = rp as IRemotingTypeInfo;
if (rti != null)
{
if (rti.CanCastTo(requiredType, target))
{
return;
}
ThrowNotSupportedException(
$"Target '{targetName}' is a transparent proxy that does not support methods of '{requiredType.FullName}'.");
}
targetType = rp.GetProxiedType();
#endif
}
else
{
targetType = target.GetType();
}
if (!requiredType.IsAssignableFrom(targetType))
{
ThrowNotSupportedException($"Target '{targetName}' of type '{targetType}' does not support methods of '{requiredType.FullName}'.");
}
}
public static Object GetStubData(System.Runtime.Remoting.Proxies.RealProxy rp)
{
return(default(Object));
}
public static void SetStubData(System.Runtime.Remoting.Proxies.RealProxy rp, Object stubData)
{
}
public static void SwitchWrappers(System.Runtime.Remoting.Proxies.RealProxy oldcp, System.Runtime.Remoting.Proxies.RealProxy newcp)
{
}
public static void SwitchWrappers(System.Runtime.Remoting.Proxies.RealProxy oldcp, System.Runtime.Remoting.Proxies.RealProxy newcp)
{
Contract.Requires(newcp != null);
Contract.Requires(oldcp != null);
}
