public static void Isolate(Action entryPoint, params IShims[] shims)
{
if (shims == null || shims.Length == 0)
{
entryPoint.Invoke();
return;
}
ShimCollection shms = new ShimCollection();
foreach (IShims shim in shims)
{
foreach (var s in shim.GetShims())
{
shms.Add(s);
}
}
Shims = shms.ToArray();
StubCache = new Dictionary <MethodBase, DynamicMethod>();
Type delegateType = typeof(Action <>).MakeGenericType(entryPoint.Target.GetType());
MethodRewriter rewriter = MethodRewriter.CreateRewriter(entryPoint.Method);
((MethodInfo)(rewriter.Rewrite())).CreateDelegate(delegateType).DynamicInvoke(entryPoint.Target);
}
public void TestConstructorRewrite()
{
List <string> list = new List <string>();
ConstructorInfo constructorInfo = typeof(List <string>).GetConstructor(Type.EmptyTypes);
MethodRewriter methodRewriter = MethodRewriter.CreateRewriter(constructorInfo, false);
DynamicMethod dynamicMethod = methodRewriter.Rewrite() as DynamicMethod;
Assert.AreEqual(typeof(void), dynamicMethod.ReturnType);
Assert.AreEqual(typeof(List <string>), dynamicMethod.GetParameters()[0].ParameterType);
}
public void TestStaticMethodRewrite()
{
MethodInfo methodInfo = typeof(DateTime).GetMethod("get_Now");
MethodRewriter methodRewriter = MethodRewriter.CreateRewriter(methodInfo, false);
DynamicMethod dynamicMethod = methodRewriter.Rewrite() as DynamicMethod;
Delegate func = dynamicMethod.CreateDelegate(typeof(Func <DateTime>));
Assert.AreEqual(DateTime.Now.ToString("yyyyMMdd_HHmm"), ((DateTime)func.DynamicInvoke()).ToString("yyyyMMdd_HHmm"));
}
public void TestStaticMethodRewrite()
{
MethodInfo methodInfo = typeof(StubHelper).GetMethod("GetMethodPointer");
MethodRewriter methodRewriter = MethodRewriter.CreateRewriter(methodInfo);
DynamicMethod dynamicMethod = methodRewriter.Rewrite() as DynamicMethod;
Delegate func = dynamicMethod.CreateDelegate(typeof(Func <MethodBase, IntPtr>));
Assert.AreEqual(StubHelper.GetMethodPointer(methodInfo), func.DynamicInvoke(methodInfo));
}
public void TestExceptionHandlersRewrite()
{
MethodInfo methodInfo = typeof(MethodRewriterTests).GetMethod("ExceptionHandlersRewriteMethod");
MethodRewriter methodRewriter = MethodRewriter.CreateRewriter(methodInfo);
DynamicMethod dynamicMethod = methodRewriter.Rewrite() as DynamicMethod;
Delegate func = dynamicMethod.CreateDelegate(typeof(Func <int>));
Assert.AreEqual(1, (int)func.DynamicInvoke());
}
public static void Isolate(Action entryPoint, params Shim[] shims)
{
if (shims == null || shims.Length == 0)
{
entryPoint.Invoke();
return;
}
Shims = shims;
Type delegateType = typeof(Action <>).MakeGenericType(entryPoint.Target.GetType());
MethodRewriter rewriter = MethodRewriter.CreateRewriter(entryPoint.Method);
((MethodInfo)(rewriter.Rewrite())).CreateDelegate(delegateType).DynamicInvoke(entryPoint.Target);
}
public void TestInstanceMethodRewrite()
{
string item = "Item 1";
List <string> list = new List <string>();
MethodInfo methodInfo = typeof(List <string>).GetMethod("Add");
MethodRewriter methodRewriter = MethodRewriter.CreateRewriter(methodInfo, false);
DynamicMethod dynamicMethod = methodRewriter.Rewrite() as DynamicMethod;
Delegate func = dynamicMethod.CreateDelegate(typeof(Action <List <string>, string>));
func.DynamicInvoke(list, item);
Assert.AreEqual(1, list.Count);
Assert.AreEqual(item, list[0]);
}
public static T IsolateDelegate <T>(Delegate entryPoint, Type delegateType, Shim[] shims, params object[] args)
{
var returnType = typeof(T);
if (entryPoint.Method.ReturnType != returnType)
{
throw new InvalidOperationException("Cannot return a type of " + returnType + " when specified method expects " + entryPoint.Method.ReturnType + ".");
}
if (shims == null || shims.Length == 0)
{
return((T)entryPoint.DynamicInvoke(args));
}
Shims = shims;
StubCache = new Dictionary <MethodBase, DynamicMethod>();
MethodRewriter rewriter = MethodRewriter.CreateRewriter(entryPoint.Method);
var delToInvoke = ((MethodInfo)(rewriter.Rewrite())).CreateDelegate(delegateType, entryPoint.Target);
return((T)delToInvoke.DynamicInvoke(args));
}
public static void IsolateDelegate(Delegate entryPoint, Type delegateType, Shim[] shims, params object[] args)
{
if (shims == null || shims.Length == 0)
{
entryPoint.DynamicInvoke();
return;
}
Shims = shims;
StubCache = new Dictionary <MethodBase, DynamicMethod>();
MethodRewriter rewriter = MethodRewriter.CreateRewriter(entryPoint.Method);
var delToInvoke = ((MethodInfo)(rewriter.Rewrite())).CreateDelegate(delegateType);
if (IsActionDelegateWithoutEntryPointFirstParam(delToInvoke, entryPoint.Method) ||
entryPoint.Target == null)
{
delToInvoke.DynamicInvoke(args);
}
else
{
delToInvoke.DynamicInvoke(entryPoint.Target);
}
}