Merge pull request #17 from benaadams/aggregate

AggregateException + Full framework testing

sample/StackTrace/Program.cs

@@ -16,9 +16,11 @@ class Program
         }
         catch (Exception ex)
         {
+            Console.WriteLine(ex);
             exception = ex.Demystify();
         }
 
+        Console.WriteLine();
         Console.WriteLine(exception);
     }
 
@@ -63,9 +65,14 @@ class Program
 
     [MethodImpl(MethodImplOptions.NoOptimization | MethodImplOptions.NoInlining)]
     static async Task<string> MethodAsync<TValue>(TValue value)
+    {
+        return await MethodLocalAsync();
+
+        async Task<string> MethodLocalAsync()
         {
             return await MethodAsync(1);
         }
+    }
 
     [MethodImpl(MethodImplOptions.NoOptimization | MethodImplOptions.NoInlining)]
     static void RunAction(Action<object> lambda, object state)

src/Ben.Demystifier/EnhancedStackTrace.Frames.cs

@@ -12,6 +12,7 @@ using System.Reflection;
 using System.Runtime.CompilerServices;
 using System.Runtime.ExceptionServices;
 using System.Text;
+using System.Threading;
 using System.Threading.Tasks;
 
 namespace System.Diagnostics
@@ -297,6 +298,17 @@ namespace System.Diagnostics
             candidateConstructors = dt.GetConstructors(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static | BindingFlags.Instance | BindingFlags.DeclaredOnly).Where(m => m.Name == matchName);
             if (TryResolveSourceMethod(candidateConstructors, kind, matchHint, ref method, ref type, out ordinal)) return true;
 
+            if (methodName == ".cctor")
+            {
+                candidateConstructors = dt.GetConstructors(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static | BindingFlags.DeclaredOnly).Where(m => m.Name == matchName);
+                foreach (var cctor in candidateConstructors)
+                {
+                    method = cctor;
+                    type = dt;
+                    return true;
+                }
+            }
+
             return false;
         }
 
@@ -321,7 +333,6 @@ namespace System.Diagnostics
                     }
                 }
 
-
                 var rawIL = nethodBody?.GetILAsByteArray();
                 if (rawIL == null) continue;
 
@@ -342,17 +353,9 @@ namespace System.Diagnostics
                             return true;
                         }
                     }
-                    else if (reader.Operand is Type t)
-                    {
-                        if (t == type)
-                        {
-                            method = candidateMethod;
-                            type = method.DeclaringType;
-                            return true;
-                        }
-                    }
                 }
             }
+
             return false;
         }
 
@@ -584,7 +587,28 @@ namespace System.Diagnostics
                 {
                     return false;
                 }
-                if (type == typeof(Task) && method.Name == "ExecuteWithThreadLocal")
+                if (type == typeof(Task))
+                {
+                    switch (method.Name)
+                    {
+                        case "ExecuteWithThreadLocal":
+                        case "Execute":
+                        case "ExecutionContextCallback":
+                        case "ExecuteEntry":
+                        case "InnerInvoke":
+                            return false;
+                    }
+                }
+                if (type == typeof(ExecutionContext))
+                {
+                    switch (method.Name)
+                    {
+                        case "RunInternal":
+                        case "Run":
+                            return false;
+                    }
+                }
+                if (type.Namespace == "System.Threading" && (type.Name?.StartsWith("_") ?? false))
                 {
                     return false;
                 }

src/Ben.Demystifier/ExceptionExtentions.cs

@@ -1,6 +1,7 @@
 // Copyright (c) Ben A Adams. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
+using System.Collections.Generic.Enumerable;
 using System.Reflection;
 
 namespace System.Diagnostics
@@ -20,6 +21,14 @@ namespace System.Diagnostics
                     stackTraceString.SetValue(exception, stackTrace.ToString());
                 }
 
+                if (exception is AggregateException aggEx)
+                {
+                    foreach (var ex in EnumerableIList.Create(aggEx.InnerExceptions))
+                    {
+                        ex.Demystify();
+                    }
+                }
+
                 exception.InnerException?.Demystify();
             }
             catch

src/Ben.Demystifier/Internal/ILReader.cs

@@ -19,7 +19,7 @@ namespace System.Diagnostics.Internal
 
         public OpCode OpCode { get; private set; }
         public int MetadataToken { get; private set; }
-        public object Operand { get; private set; }
+        public MemberInfo Operand { get; private set; }
 
         public bool Read(MethodBase methodInfo)
         {
@@ -35,13 +35,13 @@ namespace System.Diagnostics.Internal
         OpCode ReadOpCode()
         {
             byte instruction = ReadByte();
-            if (instruction != 254)
+            if (instruction < 254)
                 return singleByteOpCode[instruction];
             else
                 return doubleByteOpCode[ReadByte()];
         }
 
-        object ReadOperand(OpCode code, MethodBase methodInfo)
+        MemberInfo ReadOperand(OpCode code, MethodBase methodInfo)
         {
             MetadataToken = 0;
             switch (code.OperandType)
@@ -50,12 +50,24 @@ namespace System.Diagnostics.Internal
                     MetadataToken = ReadInt();
                     Type[] methodArgs = null;
                     if (methodInfo.GetType() != typeof(ConstructorInfo) && !methodInfo.GetType().IsSubclassOf(typeof(ConstructorInfo)))
+                    {
                         methodArgs = methodInfo.GetGenericArguments();
+                    }
                     Type[] typeArgs = null;
                     if (methodInfo.DeclaringType != null)
+                    {
                         typeArgs = methodInfo.DeclaringType.GetGenericArguments();
+                    }
+                    try
+                    {
                         return methodInfo.Module.ResolveMember(MetadataToken, typeArgs, methodArgs);
                     }
+                    catch
+                    {
+                        // Can return System.ArgumentException : Token xxx is not a valid MemberInfo token in the scope of module xxx.dll
+                        return null;
+                    }
+            }
             return null;
         }
 

test/Ben.Demystifier.Test/AggregateException.cs

@@ -0,0 +1,88 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+using Xunit;
+
+namespace Demystify
+{
+    public class AggregateException
+    {
+        [Fact]
+        public void DemystifiesAggregateExceptions()
+        {
+            Exception demystifiedException = null;
+
+            try
+            {
+                var tasks = new List<Task>
+                {
+                    Task.Run(async () => await Throw1()),
+                    Task.Run(async () => await Throw2()),
+                    Task.Run(async () => await Throw3())
+                };
+
+                Task.WaitAll(tasks.ToArray());
+            }
+            catch (Exception ex)
+            {
+                demystifiedException = ex.Demystify();
+            }
+
+            // Assert
+            var stackTrace = demystifiedException.ToString();
+            stackTrace = ReplaceLineEndings.Replace(stackTrace, "");
+            var trace = string.Join("", stackTrace.Split(new[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries)
+                // Remove items that vary between test runners
+                .Where(s =>
+                    s != "   at Task Demystify.DynamicCompilation.DoesNotPreventStackTrace()+()=>{}" &&
+                    !s.Contains("System.Threading.Tasks.Task.WaitAll")
+                )
+                .Skip(1)
+                .ToArray())
+                // Remove Full framework back arrow
+                .Replace("<---", "");
+
+            var expected = string.Join("", new[] {
+                    "   at async Task Demystify.AggregateException.Throw1()",
+                    "   at async void Demystify.AggregateException.DemystifiesAggregateExceptions()+(?)=>{}",
+                    "   --- End of inner exception stack trace ---",
+                    "   at void Demystify.AggregateException.DemystifiesAggregateExceptions()",
+                    "---> (Inner Exception #0) System.ArgumentException: Value does not fall within the expected range.",
+                    "   at async Task Demystify.AggregateException.Throw1()",
+                    "   at async void Demystify.AggregateException.DemystifiesAggregateExceptions()+(?)=>{}",
+                    "---> (Inner Exception #1) System.NullReferenceException: Object reference not set to an instance of an object.",
+                    "   at async Task Demystify.AggregateException.Throw2()",
+                    "   at async void Demystify.AggregateException.DemystifiesAggregateExceptions()+(?)=>{}",
+                    "---> (Inner Exception #2) System.InvalidOperationException: Operation is not valid due to the current state of the object.",
+                    "   at async Task Demystify.AggregateException.Throw3()",
+                    "   at async void Demystify.AggregateException.DemystifiesAggregateExceptions()+(?)=>{}"});
+
+            Assert.Equal(expected, trace);
+        }
+
+        async Task Throw1()
+        {
+            await Task.Delay(1).ConfigureAwait(false);
+            throw new ArgumentException();
+        }
+
+        async Task Throw2()
+        {
+            await Task.Delay(1).ConfigureAwait(false);
+            throw new NullReferenceException();
+        }
+
+        async Task Throw3()
+        {
+            await Task.Delay(1).ConfigureAwait(false);
+            throw new InvalidOperationException();
+        }
+
+
+        private Regex ReplaceLineEndings = new Regex(" in [^\n\r]+");
+    }
+}

test/Ben.Demystifier.Test/Ben.Demystifier.Test.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp2.0</TargetFramework>
+    <TargetFrameworks>netcoreapp2.0;net46</TargetFrameworks>
 
     <IsPackable>false</IsPackable>
   </PropertyGroup>

test/Ben.Demystifier.Test/DynamicCompilation.cs

@@ -38,7 +38,7 @@ namespace Demystify
             // Assert
             var stackTrace = demystifiedException.ToString();
             stackTrace = ReplaceLineEndings.Replace(stackTrace, "");
-            var trace = stackTrace.Split(Environment.NewLine)
+            var trace = stackTrace.Split(new[] { Environment.NewLine }, StringSplitOptions.None)
                 // Remove items that vary between test runners
                 .Where(s =>
                     s != "   at void System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, object state)" &&

test/Ben.Demystifier.Test/MixedStack.cs

@@ -22,16 +22,21 @@ namespace Demystify
                     stackFrame => stackFrame.MethodInfo.ToString()
                 )
                 // Remove Framework method that can be optimized out (inlined)
-                .Where(methodName => methodName != "System.Collections.Generic.List<T>+Enumerator.MoveNext()")
+                .Where(methodName => !methodName.StartsWith("bool System.Collections.Generic.List<T>+"));
-                // Don't include this method as call stack shared between multiple tests
+
-                .SkipLast(1);
+            var count = methodNames.Count();
+            methodNames = methodNames.Take(count - 1);
 
-            foreach (var method in methodNames)
-            {
-                Console.WriteLine(method.ToString());
-            }
             // Assert
-            Assert.Equal (ExpectedCallStack, methodNames.ToList());
+            var expected = ExpectedCallStack.ToArray();
+            var trace = methodNames.ToArray();
+
+            Assert.Equal(expected.Length, trace.Length);
+
+            for (var i = 0; i < expected.Length; i++)
+            {
+                Assert.Equal(expected[i], trace[i]);
+            }
         }
 
 
@@ -52,7 +57,6 @@ namespace Demystify
 
         static List<string> ExpectedCallStack = new List<string>()
         {
-            "bool System.Collections.Generic.List<T>+Enumerator.MoveNextRare()",
             "IEnumerable<string> Demystify.MixedStack.Iterator()+MoveNext()",
             "string string.Join(string separator, IEnumerable<string> values)",
             "string Demystify.MixedStack+GenericClass<T>.GenericMethod<V>(ref V value)",

test/Ben.Demystifier.Test/NonThrownException.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Diagnostics;
+using System.Linq;
 using System.Text.RegularExpressions;
 using System.Threading.Tasks;
 using Xunit;
@@ -28,13 +29,12 @@ namespace Demystify
             // Assert
             var stackTrace = demystifiedException.ToString();
             stackTrace = ReplaceLineEndings.Replace(stackTrace, "");
-            var trace = stackTrace.Split(Environment.NewLine);
+            var trace = stackTrace.Split(new[]{Environment.NewLine}, StringSplitOptions.None);
 
             Assert.Equal(
                 new[] {     
                     "System.Exception: Exception of type 'System.Exception' was thrown. ---> System.Exception: Exception of type 'System.Exception' was thrown.",
                     "   at Task Demystify.NonThrownException.DoesNotPreventThrowStackTrace()+()=>{}",
-                    "   at void System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, object state)",
                     "   at async Task Demystify.NonThrownException.DoesNotPreventThrowStackTrace()",
                     "   --- End of inner exception stack trace ---"}, 
                 trace);
@@ -52,13 +52,12 @@ namespace Demystify
             // Assert
             stackTrace = demystifiedException.ToString();
             stackTrace = ReplaceLineEndings.Replace(stackTrace, "");
-            trace = stackTrace.Split(Environment.NewLine);
+            trace = stackTrace.Split(new[] { Environment.NewLine }, StringSplitOptions.None);
 
             Assert.Equal(
                 new[] {
                     "System.Exception: Exception of type 'System.Exception' was thrown. ---> System.Exception: Exception of type 'System.Exception' was thrown.",
                     "   at Task Demystify.NonThrownException.DoesNotPreventThrowStackTrace()+()=>{}",
-                    "   at void System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, object state)",
                     "   at async Task Demystify.NonThrownException.DoesNotPreventThrowStackTrace()",
                     "   --- End of inner exception stack trace ---",
                     "   at async Task Demystify.NonThrownException.DoesNotPreventThrowStackTrace()"
@@ -78,11 +77,14 @@ namespace Demystify
             // Assert
             var stackTrace = est.ToString();
             stackTrace = ReplaceLineEndings.Replace(stackTrace, "");
-            var trace = stackTrace.Split(Environment.NewLine);
+            var trace = stackTrace.Split(new[] { Environment.NewLine }, StringSplitOptions.None)
+                // Remove Full framework entries
+                .Where(s => !s.StartsWith("   at bool System.Threading._ThreadPoolWaitCallbac") &&
+                       !s.StartsWith("   at void System.Threading.Tasks.Task.System.Thre"));
+
 
             Assert.Equal(
                 new[] {
-                    "   at void System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, object state)",
                     "   at bool System.Threading.ThreadPoolWorkQueue.Dispatch()"},
                 trace);
         }