Pranav K
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// Copyright (c) .NET Foundation. All rights reserved.
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// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Globalization;
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using System.Linq;
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using System.Linq.Expressions;
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using System.Reflection;
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using System.Threading.Tasks;
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using ClassLibraryWithPortablePdbs;
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using Microsoft.Extensions.StackTrace.Sources;
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using Xunit;
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namespace Microsoft.Extensions.Internal.Test
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{
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public class StackTraceTest
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{
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public static TheoryData CanGetStackTraceData => new TheoryData<Action, string>
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{
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{
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TestMethods.ThrowsException,
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$"{typeof(TestMethods).GetTypeInfo().FullName}.{nameof(TestMethods.ThrowsException)}()"
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},
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{
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new ExceptionType().MethodThatThrows,
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$"{typeof(ExceptionType).GetTypeInfo().FullName}.{nameof(ExceptionType.MethodThatThrows)}()"
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},
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{
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ExceptionType.StaticMethodThatThrows,
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$"{typeof(ExceptionType).GetTypeInfo().FullName}.{nameof(ExceptionType.StaticMethodThatThrows)}()"
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}
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};
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[Theory]
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[MemberData(nameof(CanGetStackTraceData))]
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public void GetFrames_CanGetStackTrace(Action action, string expectedDisplay)
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{
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try
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{
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action();
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}
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catch (Exception exception)
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{
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// Arrange and Act
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var frames = StackTraceHelper.GetFrames(exception);
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// Assert
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Assert.Equal(expectedDisplay, frames.First().MethodDisplayInfo.ToString());
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Assert.Equal(
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$"{typeof(StackTraceTest).GetTypeInfo().FullName}.{nameof(GetFrames_CanGetStackTrace)}" +
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"(Action action, string expectedDisplay)",
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frames.Last().MethodDisplayInfo.ToString());
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}
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}
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[Fact]
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public void GetFrames_DoesNotFailForDynamicallyGeneratedAssemblies()
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{
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// Arrange
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var action = (Action)Expression.Lambda(
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Expression.Throw(
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Expression.New(typeof(Exception)))).Compile();
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// Act
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try
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{
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action();
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}
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catch (Exception exception)
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{
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var frames = StackTraceHelper.GetFrames(exception);
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// Assert
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Assert.Null(frames.First().FilePath);
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Assert.Equal(
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$"{typeof(StackTraceTest).GetTypeInfo().FullName}.{nameof(GetFrames_DoesNotFailForDynamicallyGeneratedAssemblies)}()",
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frames.Last().MethodDisplayInfo.ToString());
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}
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}
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public static TheoryData GetMethodDisplayString_ReturnsTypeNameQualifiedMethodsData
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{
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get
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{
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var intParse = ((Func<string, int>)int.Parse).GetMethodInfo();
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var dateTimeOffsetTryParse = typeof(DateTimeOffset).GetMethods()
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.First(m => m.Name == nameof(DateTimeOffset.TryParse) && m.GetParameters().Length == 2);
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var genericTypeMethod = typeof(List<Process>).GetMethod(nameof(List<Process>.Remove));
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var genericMethod = typeof(TestMethods).GetMethod(nameof(TestMethods.GenericMethod));
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var multiGenericMethod = typeof(TestMethods).GetMethod(nameof(TestMethods.MultiParameterGenericMethod));
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var byRefMethod = typeof(TestMethods).GetMethod(nameof(TestMethods.ByRefMethod));
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var asyncMethod = typeof(TestMethods).GetMethod(nameof(TestMethods.AsyncMethod));
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var nullableParam = typeof(TestMethods).GetMethod(nameof(TestMethods.MethodWithNullableParams));
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var nestedMethod = typeof(StackTraceTest).GetNestedType(nameof(NestedType), BindingFlags.Public)
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.GetMethod(nameof(NestedType.NestedMethod));
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var nestedGenericMethod = typeof(StackTraceTest).GetNestedType(nameof(NestedType), BindingFlags.Public)
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.GetMethod(nameof(NestedType.NestedGenericMethod));
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return new TheoryData<MethodBase, string>
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{
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{ intParse, "int.Parse(string s)" },
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{ dateTimeOffsetTryParse, "System.DateTimeOffset.TryParse(string input, out DateTimeOffset result)" },
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{ genericTypeMethod, "System.Collections.Generic.List<System.Diagnostics.Process>.Remove(Process item)" },
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{ genericMethod, $"{typeof(TestMethods)}.{nameof(TestMethods.GenericMethod)}<TVal>(TVal value)" },
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{ multiGenericMethod, $"{typeof(TestMethods)}.{nameof(TestMethods.MultiParameterGenericMethod)}<TKey, TVal>(KeyValuePair<TKey, TVal> keyValuePair)" },
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{ byRefMethod, $"{typeof(TestMethods)}.{nameof(TestMethods.ByRefMethod)}(int a, CultureInfo b, ref long c)" },
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{ asyncMethod, $"{typeof(TestMethods)}.{nameof(TestMethods.AsyncMethod)}(string name)" },
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{ nullableParam, $"{typeof(TestMethods)}.{nameof(TestMethods.MethodWithNullableParams)}(Nullable<int> name, string value)" },
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{ nestedMethod, $"{typeof(NestedType)}.{nameof(NestedType.NestedMethod)}(string value)" },
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{ nestedGenericMethod, $"{typeof(NestedType)}.{nameof(NestedType.NestedGenericMethod)}<TKey>(NestedParameterType a, TKey key)" }
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};
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}
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}
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[Theory]
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[MemberData(nameof(GetMethodDisplayString_ReturnsTypeNameQualifiedMethodsData))]
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public void GetMethodDisplayString_ReturnsTypeNameQualifiedMethods(MethodBase method, string expected)
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{
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// Act
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var actual = StackTraceHelper.GetMethodDisplayString(method);
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// Assert
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Assert.Equal(expected, actual.ToString());
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}
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public class TestMethods
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{
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public static void ThrowsException()
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{
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throw new Exception();
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}
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public string GenericMethod<TVal>(TVal value) => value.ToString();
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public void MultiParameterGenericMethod<TKey, TVal>(KeyValuePair<TKey, TVal> keyValuePair)
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{
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}
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public decimal ByRefMethod(int a, CultureInfo b, ref long c) => a + c;
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public async Task<object> AsyncMethod(string name) => await Task.FromResult(0);
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public void MethodWithNullableParams(int? name, string value)
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{
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}
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}
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public class NestedType
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{
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public void NestedMethod(string value) => Console.WriteLine("Hello world");
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public TKey NestedGenericMethod<TKey>(NestedParameterType a, TKey key) => key;
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}
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public class NestedParameterType
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{
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}
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}
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}
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