/
RaiseEventHandler.cs
57 lines (50 loc) · 1.71 KB
/
RaiseEventHandler.cs
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using System;
using System.Linq;
using System.Reflection;
using NSubstitute.Core;
using NSubstitute.Exceptions;
namespace NSubstitute.Routing.Handlers
{
public class RaiseEventHandler : ICallHandler
{
private readonly IEventHandlerRegistry _eventHandlerRegistry;
private readonly Func<ICall, object?[]> _getEventArguments;
public RaiseEventHandler(IEventHandlerRegistry eventHandlerRegistry, Func<ICall, object?[]> getEventArguments)
{
_eventHandlerRegistry = eventHandlerRegistry;
_getEventArguments = getEventArguments;
}
public RouteAction Handle(ICall call)
{
var methodInfo = call.GetMethodInfo();
var eventInfo = FindEventInfo(methodInfo);
if (eventInfo == null)
{
throw new CouldNotRaiseEventException();
}
object?[] eventArguments = _getEventArguments(call);
var handlers = _eventHandlerRegistry.GetHandlers(eventInfo.Name);
foreach (Delegate handler in handlers)
{
if (handler == null)
{
continue;
}
try
{
handler.DynamicInvoke(eventArguments);
}
catch (TargetInvocationException e)
{
throw e.InnerException!;
}
}
return RouteAction.Continue();
static EventInfo? FindEventInfo(MethodInfo mi)
{
return mi.DeclaringType!.GetEvents().FirstOrDefault(
e => e.GetAddMethod() == mi || e.GetRemoveMethod() == mi);
}
}
}
}