public void SupplyingOpenGenericInterfacesAsAdditionalInterfacesThrows()
{
// arrange
IInstanceInterceptor interceptor = new InterfaceInterceptor();
HasSomeProperties target = new HasSomeProperties();
// act
Exception exception = null;
try
{
object proxy =
interceptor.CreateProxy(
typeof(IHaveSomeProperties),
target,
typeof(IGenericOne <>));
}
catch (ArgumentException e)
{
exception = e;
}
// assert
Assert.IsNotNull(exception);
}
public void SupplyingANullArrayOfAdditionalInterfacesThrows()
{
// arrange
IInstanceInterceptor interceptor = new InterfaceInterceptor();
HasSomeProperties target = new HasSomeProperties();
// act
Exception exception = null;
try
{
object proxy =
interceptor.CreateProxy(
typeof(IHaveSomeProperties),
target,
(Type[])null);
}
catch (ArgumentNullException e)
{
exception = e;
}
// assert
Assert.IsNotNull(exception);
}
[Ignore] // TODO: Known issue - we don't copy attributes yet
public void ProxyPropertyReflectionReturnsAttributes()
{
IInstanceInterceptor interceptor = new InterfaceInterceptor();
HasSomeProperties target = new HasSomeProperties();
IInterceptingProxy proxy = interceptor.CreateProxy(typeof(IHaveSomeProperties), target);
PropertyInfo nameProp = proxy.GetType().GetProperty("Name");
SampleAttribute attr = (SampleAttribute)Attribute.GetCustomAttribute(nameProp, typeof(SampleAttribute));
Assert.AreEqual("A name", attr.Name);
}
public void ReflectingOverProxyTypeReturnsProperties()
{
IInstanceInterceptor interceptor = new InterfaceInterceptor();
HasSomeProperties target = new HasSomeProperties();
IInterceptingProxy proxy = interceptor.CreateProxy(typeof(IHaveSomeProperties), target);
List <PropertyInfo> interfaceProperties = new List <PropertyInfo>(typeof(IHaveSomeProperties).GetProperties());
List <PropertyInfo> proxyProperties = new List <PropertyInfo>(proxy.GetType().GetProperties());
Assert.AreEqual(interfaceProperties.Count, proxyProperties.Count);
}
public void MultipleProxiesForTheSameInterfaceHaveTheSameType()
{
// arrange
IInstanceInterceptor interceptor = new InterfaceInterceptor();
HasSomeProperties target = new HasSomeProperties();
// act
object proxy1 = interceptor.CreateProxy(typeof(IHaveSomeProperties), target);
object proxy2 = interceptor.CreateProxy(typeof(IHaveSomeProperties), target);
// assert
Assert.AreSame(proxy1.GetType(), proxy2.GetType());
}
public void AdditionalInterfaceIsImplementedExplicitly()
{
// arrange
IInstanceInterceptor interceptor = new InterfaceInterceptor();
HasSomeProperties target = new HasSomeProperties();
// act
object proxy = interceptor.CreateProxy(typeof(IHaveSomeProperties), target, typeof(IInterfaceTwo));
InterfaceMapping interfaceMapping = proxy.GetType().GetInterfaceMap(typeof(IInterfaceTwo));
// assert
Assert.IsNull(interfaceMapping.TargetMethods.FirstOrDefault(mi => mi.IsPublic));
}
public void CanCreateProxyForMultipleInterfaces()
{
// arrange
IInstanceInterceptor interceptor = new InterfaceInterceptor();
HasSomeProperties target = new HasSomeProperties();
// act
object proxy = interceptor.CreateProxy(typeof(IHaveSomeProperties), target, typeof(IInterfaceOne));
// assert
Assert.IsTrue(proxy is IHaveSomeProperties);
Assert.IsTrue(proxy is IInterfaceOne);
}
public void ProxiesForTheSameInterfaceButDifferentAdditionalInterfacesDoNotHaveTheSameType()
{
// arrange
IInstanceInterceptor interceptor = new InterfaceInterceptor();
HasSomeProperties target = new HasSomeProperties();
// act
object proxy1 = interceptor.CreateProxy(typeof(IHaveSomeProperties), target, typeof(IBaseInterface));
object proxy2 = interceptor.CreateProxy(typeof(IHaveSomeProperties), target, typeof(IBaseInterface2));
// assert
Assert.AreNotSame(proxy1.GetType(), proxy2.GetType());
Assert.IsTrue(proxy1 is IBaseInterface);
Assert.IsTrue(proxy2 is IBaseInterface2);
}
public void CanImplementAdditionalClosedGenericInterface()
{
// arrange
IInstanceInterceptor interceptor = new InterfaceInterceptor();
HasSomeProperties target = new HasSomeProperties();
// act
object proxy =
interceptor.CreateProxy(
typeof(IHaveSomeProperties),
target,
typeof(IGenericOne <string>));
// assert
Assert.IsTrue(proxy is IHaveSomeProperties);
Assert.IsTrue(proxy is IGenericOne <string>);
}
public void CanSuccessfullyInvokeAnAdditionalInterfaceMethodIfAnInterceptorDoesNotForwardTheCall()
{
// arrange
IInstanceInterceptor interceptor = new InterfaceInterceptor();
HasSomeProperties target = new HasSomeProperties();
object proxy = interceptor.CreateProxy(typeof(IHaveSomeProperties), target, typeof(IInterfaceOne));
bool invoked = false;
((IInterceptingProxy)proxy).AddInterceptionBehavior(
new DelegateInterceptionBehavior(
(input, getNext) => { invoked = true; return(input.CreateMethodReturn(null)); }));
// act
((IInterfaceOne)proxy).TargetMethod();
// assert
Assert.IsTrue(invoked);
}
public void CanImplementMultipleAdditionalInterfacesWithCommonAncestors()
{
// arrange
IInstanceInterceptor interceptor = new InterfaceInterceptor();
HasSomeProperties target = new HasSomeProperties();
// act
object proxy =
interceptor.CreateProxy(
typeof(IHaveSomeProperties),
target,
typeof(IDerivedInterface1),
typeof(IDerivedInterface2));
// assert
Assert.IsTrue(proxy is IHaveSomeProperties);
Assert.IsTrue(proxy is IDerivedInterface1);
Assert.IsTrue(proxy is IDerivedInterface2);
}
public void InvokingMethodOnAdditionalInterfaceThrowsIfNotHandledByInterceptor()
{
// arrange
IInstanceInterceptor interceptor = new InterfaceInterceptor();
HasSomeProperties target = new HasSomeProperties();
object proxy = interceptor.CreateProxy(typeof(IHaveSomeProperties), target, typeof(IInterfaceOne));
// act
Exception exception = null;
try
{
((IInterfaceOne)proxy).TargetMethod();
Assert.Fail("should have thrown");
}
catch (NotImplementedException e)
{
exception = e;
}
// assert
Assert.IsNotNull(exception);
}
public void CanImplementINotifyPropertyChanged()
{
IInstanceInterceptor interceptor = new InterfaceInterceptor();
HasSomeProperties target = new HasSomeProperties();
object proxy = interceptor.CreateProxy(typeof(IHaveSomeProperties), target, typeof(INotifyPropertyChanged));
string changeProperty = null;
PropertyChangedEventHandler handler = (sender, args) => changeProperty = args.PropertyName;
((IInterceptingProxy)proxy).AddInterceptionBehavior(new NaiveINotifyPropertyChangedInterceptionBehavior());
((INotifyPropertyChanged)proxy).PropertyChanged += handler;
((IHaveSomeProperties)proxy).IntProperty = 100;
Assert.AreEqual(100, ((IHaveSomeProperties)proxy).IntProperty);
Assert.AreEqual("IntProperty", changeProperty);
changeProperty = null;
((INotifyPropertyChanged)proxy).PropertyChanged -= handler;
((IHaveSomeProperties)proxy).IntProperty = 200;
Assert.AreEqual(200, ((IHaveSomeProperties)proxy).IntProperty);
Assert.AreEqual(null, changeProperty);
}
