public void EventsAreIntercepted()
{
CallCountHandler fireHandler = new CallCountHandler();
CallCountHandler addHandler = new CallCountHandler();
VirtualMethodInterceptor interceptor = new VirtualMethodInterceptor();
Assert.IsTrue(interceptor.CanIntercept(typeof(OverrideableProperies)));
Type proxyType = interceptor.CreateProxyType(typeof(ClassWithEvent));
ClassWithEvent instance = (ClassWithEvent)Activator.CreateInstance(proxyType);
PipelineManager manager = new PipelineManager();
((IInterceptingProxy)instance).AddInterceptionBehavior(new PolicyInjectionBehavior(manager));
SetPipeline(manager, instance, "add_MyEvent", addHandler);
SetPipeline(manager, instance, "FireMyEvent", fireHandler);
bool raised = false;
instance.MyEvent += delegate { raised = true; };
instance.FireMyEvent();
instance.FireMyEvent();
Assert.IsTrue(raised);
Assert.AreEqual(2, fireHandler.CallCount);
Assert.AreEqual(1, addHandler.CallCount);
}
public void CanInterceptProperties()
{
CallCountHandler getHandler = new CallCountHandler();
CallCountHandler setHandler = new CallCountHandler();
VirtualMethodInterceptor interceptor = new VirtualMethodInterceptor();
Assert.IsTrue(interceptor.CanIntercept(typeof(OverrideableProperies)));
Type proxyType = interceptor.CreateProxyType(typeof(OverrideableProperies));
OverrideableProperies instance = (OverrideableProperies)Activator.CreateInstance(proxyType);
PipelineManager manager = new PipelineManager();
((IInterceptingProxy)instance).AddInterceptionBehavior(new PolicyInjectionBehavior(manager));
SetPipeline(manager, instance, "get_IntProperty", getHandler);
SetPipeline(manager, instance, "set_IntProperty", setHandler);
instance.IntProperty = 12;
instance.IntProperty = 15;
int total = 0;
for (int i = 0; i < 5; ++i)
{
total += instance.IntProperty;
}
Assert.AreEqual(5 * 15, total);
Assert.AreEqual(5, getHandler.CallCount);
Assert.AreEqual(2, setHandler.CallCount);
}
public void CanInterceptProperties()
{
CallCountHandler getHandler = new CallCountHandler();
CallCountHandler setHandler = new CallCountHandler();
VirtualMethodInterceptor interceptor = new VirtualMethodInterceptor();
Assert.IsTrue(interceptor.CanIntercept(typeof(OverrideableProperies)));
Type proxyType = interceptor.CreateProxyType(typeof(OverrideableProperies));
OverrideableProperies instance = (OverrideableProperies)Activator.CreateInstance(proxyType);
PipelineManager manager = new PipelineManager();
((IInterceptingProxy)instance).AddInterceptionBehavior(new PolicyInjectionBehavior(manager));
SetPipeline(manager, instance, "get_IntProperty", getHandler);
SetPipeline(manager, instance, "set_IntProperty", setHandler);
instance.IntProperty = 12;
instance.IntProperty = 15;
int total = 0;
for (int i = 0; i < 5; ++i)
{
total += instance.IntProperty;
}
Assert.AreEqual(5 * 15, total);
Assert.AreEqual(5, getHandler.CallCount);
Assert.AreEqual(2, setHandler.CallCount);
}
static void VirtualMethodInterceptor(Type type)
{
//Virtual method interceptor
var interceptor = new VirtualMethodInterceptor();
var canIntercept = interceptor.CanIntercept(type);
var myProxyType = interceptor.Intercept(type, typeof(MyHandler));
var myProxy = Activator.CreateInstance(myProxyType) as IMyType;
var proxy = myProxy as IInterceptionProxy;
var otherInterceptor = proxy.Interceptor;
var result = myProxy.MyMethod();
Assert.AreEqual(20, result);
}
public void CanDoVirtualInterception()
{
//Virtual method interceptor
var type = typeof(MyType);
var handlerType = typeof(ModifyResultHandler);
var interceptor = new VirtualMethodInterceptor();
var canIntercept = interceptor.CanIntercept(type);
var myProxyType = interceptor.Intercept(type, handlerType);
var myProxy = Activator.CreateInstance(myProxyType) as IMyType;
var result = myProxy.MyMethod();
Assert.Equal(20, result);
}
public void ReflectingOverProxyTypesGivesOnlyBaseProperties()
{
VirtualMethodInterceptor interceptor = new VirtualMethodInterceptor();
Assert.IsTrue(interceptor.CanIntercept(typeof(OverrideableProperies)));
Type proxyType = interceptor.CreateProxyType(typeof(OverrideableProperies));
PropertyInfo[] properties = proxyType.GetProperties();
Assert.AreEqual(2, properties.Length);
Assert.IsTrue(Sequence.ForAll(properties, delegate(PropertyInfo pi) { return(pi.DeclaringType == typeof(OverrideableProperies)); }));
}
public void CantInterceptSealedClass()
{
VirtualMethodInterceptor interceptor = new VirtualMethodInterceptor();
Assert.IsFalse(interceptor.CanIntercept(typeof(CantOverride)));
}
public void CanInterceptBasicClass()
{
VirtualMethodInterceptor interceptor = new VirtualMethodInterceptor();
Assert.IsTrue(interceptor.CanIntercept(typeof(ClassWithNoVirtuals)));
}
static void VirtualMethodInterceptor(Type type)
{
//Virtual method interceptor
var interceptor = new VirtualMethodInterceptor();
var canIntercept = interceptor.CanIntercept(type);
var myProxyType = interceptor.Intercept(type, typeof(MyHandler));
var myProxy = Activator.CreateInstance(myProxyType) as IMyType;
var proxy = myProxy as IInterceptionProxy;
var otherInterceptor = proxy.Interceptor;
var result = myProxy.MyMethod();
Assert.AreEqual(20, result);
}
public void CantInterceptSealedClass()
{
VirtualMethodInterceptor interceptor = new VirtualMethodInterceptor();
Assert.IsFalse(interceptor.CanIntercept(typeof(CantOverride)));
}
public void CanInterceptBasicClass()
{
VirtualMethodInterceptor interceptor = new VirtualMethodInterceptor();
Assert.IsTrue(interceptor.CanIntercept(typeof(ClassWithNoVirtuals)));
}
public void EventsAreIntercepted()
{
CallCountHandler fireHandler = new CallCountHandler();
CallCountHandler addHandler = new CallCountHandler();
VirtualMethodInterceptor interceptor = new VirtualMethodInterceptor();
Assert.IsTrue(interceptor.CanIntercept(typeof(OverrideableProperies)));
Type proxyType = interceptor.CreateProxyType(typeof(ClassWithEvent));
ClassWithEvent instance = (ClassWithEvent)Activator.CreateInstance(proxyType);
PipelineManager manager = new PipelineManager();
((IInterceptingProxy)instance).AddInterceptionBehavior(new PolicyInjectionBehavior(manager));
SetPipeline(manager, instance, "add_MyEvent", addHandler);
SetPipeline(manager, instance, "FireMyEvent", fireHandler);
bool raised = false;
instance.MyEvent += delegate { raised = true; };
instance.FireMyEvent();
instance.FireMyEvent();
Assert.IsTrue(raised);
Assert.AreEqual(2, fireHandler.CallCount);
Assert.AreEqual(1, addHandler.CallCount);
}
public void ReflectingOverProxyTypesGivesOnlyBaseProperties()
{
VirtualMethodInterceptor interceptor = new VirtualMethodInterceptor();
Assert.IsTrue(interceptor.CanIntercept(typeof(OverrideableProperies)));
Type proxyType = interceptor.CreateProxyType(typeof(OverrideableProperies));
PropertyInfo[] properties = proxyType.GetProperties();
Assert.AreEqual(2, properties.Length);
Assert.IsTrue(properties.All(pi => pi.DeclaringType == typeof(OverrideableProperies)));
}