Feature/Dedicated project for Tests (#14)

OpenTelemetry.Instrumentation.Digma.sln

@@ -7,6 +7,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "OpenTelemetry.Instrumentati
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Digma.MassTransit.Integration", "src\Digma.MassTransit.Integration\Digma.MassTransit.Integration.csproj", "{61EA0936-F7BE-4A78-85D7-4C312038CDE4}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "OpenTelemetry.Instrumentation.Digma.Tests", "src\OpenTelemetry.Instrumentation.Digma.Tests\OpenTelemetry.Instrumentation.Digma.Tests.csproj", "{79CE5248-0B20-488A-9BEB-2ECC5D936CAB}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -21,6 +23,10 @@ Global
 		{61EA0936-F7BE-4A78-85D7-4C312038CDE4}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{61EA0936-F7BE-4A78-85D7-4C312038CDE4}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{61EA0936-F7BE-4A78-85D7-4C312038CDE4}.Release|Any CPU.Build.0 = Release|Any CPU
+		{79CE5248-0B20-488A-9BEB-2ECC5D936CAB}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{79CE5248-0B20-488A-9BEB-2ECC5D936CAB}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{79CE5248-0B20-488A-9BEB-2ECC5D936CAB}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{79CE5248-0B20-488A-9BEB-2ECC5D936CAB}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

src/OpenTelemetry.Instrumentation.Digma.Tests/OpenTelemetry.Instrumentation.Digma.Tests.csproj

@@ -0,0 +1,16 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net6.0</TargetFramework>
+        <Nullable>enable</Nullable>
+        <IsPackable>false</IsPackable>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <PackageReference Include="MSTest" Version="2.2.10" />
+    </ItemGroup>
+
+    <ItemGroup>
+        <ProjectReference Include="..\OpenTelemetry.Instrumentation.Digma\OpenTelemetry.Instrumentation.Digma.csproj" />
+    </ItemGroup>
+</Project>

src/OpenTelemetry.Instrumentation.Digma.Tests/Stubs/DecoratedService.cs

@@ -0,0 +1,60 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Threading.Tasks;
+using OpenTelemetry.Instrumentation.Digma.Helpers.Attributes;
+
+namespace OpenTelemetry.Instrumentation.Digma.Tests.Stubs;
+
+public interface IDecoratedService
+{
+    public void MethodExplicitlyMarkedForTracing(Action stateValidation);
+
+    public Task AsyncMethodExplicitlyMarkedForTracing(Action stateValidation);
+
+    public void MethodNotExplicitlyMarkedForTracing(Action stateValidation);
+
+    public void MethodWithStrangeParams1(Action stateValidation,
+        IList<string>[] arrayOfList, ISet<int[]> setOfArray, IDictionary<int, ICollection<string>> dict,
+        ref int intVal);
+
+    public void MethodJaggedAndMultiDimArraysParams(Action stateValidation, out string strVal,
+        bool[][][] jaggedArrayOfBools, short[,,,][,][,,] multiDimArrayOfShorts,
+        long[,,][][,][] mixMultiDimAndJaggedArraysOfLongs
+    );
+}
+
+public class DecoratedService : IDecoratedService
+{
+    [TraceActivity()]
+    public void MethodExplicitlyMarkedForTracing(Action stateValidation)
+    {
+        var v = Activity.Current;
+        stateValidation();
+    }
+
+    [TraceActivity()]
+    public async Task AsyncMethodExplicitlyMarkedForTracing(Action stateValidation)
+    {
+        stateValidation();
+    }
+
+    public void MethodNotExplicitlyMarkedForTracing(Action stateValidation)
+    {
+        stateValidation();
+    }
+
+    public void MethodWithStrangeParams1(Action stateValidation,
+        IList<string>[] arrayOfList, ISet<int[]> setOfArray, IDictionary<int, ICollection<string>> dict, ref int intVal)
+    {
+        stateValidation();
+    }
+
+    public void MethodJaggedAndMultiDimArraysParams(Action stateValidation, out string strVal,
+        bool[][][] jaggedArrayOfBools, short[,,,][,][,,] multiDimArrayOfShorts,
+        long[,,][][,][] mixMultiDimAndJaggedArraysOfLongs)
+    {
+        strVal = "hello";
+        stateValidation();
+    }
+}

src/OpenTelemetry.Instrumentation.Digma.Tests/TestTracingDecorator.cs

@@ -0,0 +1,109 @@
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using OpenTelemetry.Instrumentation.Digma.Helpers;
+using OpenTelemetry.Instrumentation.Digma.Tests.Stubs;
+using OpenTelemetry.Resources;
+using OpenTelemetry.Trace;
+
+namespace OpenTelemetry.Instrumentation.Digma.Tests;
+
+[TestClass]
+public class TestTracingDecorator
+{
+    private static readonly string ServiceInterfaceFqn =
+        "OpenTelemetry.Instrumentation.Digma.Tests.Stubs.IDecoratedService";
+
+    [TestMethod]
+    public void Activity_Created_For_Attribute_Marked_Method()
+    {
+        DecoratedService service = new DecoratedService();
+        IDecoratedService tracingDecorator = TraceDecorator<IDecoratedService>.Create(service);
+        tracingDecorator.MethodExplicitlyMarkedForTracing(() =>
+        {
+            Assert.IsNotNull(Activity.Current);
+            AssertHasCommonTags(Activity.Current, ServiceInterfaceFqn,
+                "MethodExplicitlyMarkedForTracing", "Action");
+        });
+    }
+
+    [TestInitialize]
+    public void SetupOtel()
+    {
+        Sdk.CreateTracerProviderBuilder()
+            .AddSource("*")
+            .SetResourceBuilder(
+                ResourceBuilder.CreateDefault()
+                    .AddService(serviceName: "test", serviceVersion: "2.2"))
+            .Build();
+    }
+
+    [TestMethod]
+    public async Task Activity_Created_For_Async_Attribute_Marked_Method()
+    {
+        DecoratedService service = new DecoratedService();
+        IDecoratedService tracingDecorator = TraceDecorator<IDecoratedService>.Create(service);
+        await tracingDecorator.AsyncMethodExplicitlyMarkedForTracing(() =>
+        {
+            Assert.IsNotNull(Activity.Current);
+            AssertHasCommonTags(Activity.Current, ServiceInterfaceFqn,
+                "AsyncMethodExplicitlyMarkedForTracing", "Action");
+        });
+    }
+
+    [TestMethod]
+    public void Activity_Created_MethodWithStrangeParams1()
+    {
+        DecoratedService service = new DecoratedService();
+        IDecoratedService tracingDecorator = TraceDecorator<IDecoratedService>.Create(service);
+        int intVal = 5;
+        tracingDecorator.MethodWithStrangeParams1(() =>
+            {
+                Assert.IsNotNull(Activity.Current);
+                AssertHasCommonTags(Activity.Current, ServiceInterfaceFqn, "MethodWithStrangeParams1",
+                    "Action|IList`1[]|ISet`1|IDictionary`2|Int32&");
+            },
+            new List<string>[] { }, new HashSet<int[]>(), new Dictionary<int, ICollection<string>>(), ref intVal
+        );
+    }
+
+    [TestMethod]
+    public void Activity_Created_MethodJaggedAndMultiDimArraysParams()
+    {
+        DecoratedService service = new DecoratedService();
+        IDecoratedService tracingDecorator = TraceDecorator<IDecoratedService>.Create(service);
+        string strVal;
+        tracingDecorator.MethodJaggedAndMultiDimArraysParams(() =>
+            {
+                Assert.IsNotNull(Activity.Current);
+                AssertHasCommonTags(Activity.Current, ServiceInterfaceFqn, "MethodJaggedAndMultiDimArraysParams",
+                    "Action|String&|Boolean[][][]|Int16[,,][,][,,,]|Int64[][,][][,,]");
+            },
+            out strVal, new bool[][][] { }, new short[,,,][,][,,] { }, new long[,,][][,][] { }
+        );
+    }
+
+    [TestMethod]
+    public void Activity_Not_Created_For_Non_Attribute_Marked_Method_If_All_Methods_False()
+    {
+        DecoratedService service = new DecoratedService();
+        IDecoratedService tracingDecorator =
+            TraceDecorator<IDecoratedService>.Create(service, decorateAllMethods: false);
+        tracingDecorator.MethodNotExplicitlyMarkedForTracing(() => { Assert.IsNull(Activity.Current); });
+    }
+
+    private void AssertHasCommonTags(Activity? activity,
+        string expectedClassName, string expectedMethodName, string expectedParameterTypes)
+    {
+        var kvpTags = activity.Tags.ToArray();
+        CollectionAssert.Contains(kvpTags, new KeyValuePair<string, string>("code.namespace", expectedClassName));
+        CollectionAssert.Contains(kvpTags, new KeyValuePair<string, string>("code.function", expectedMethodName));
+        if (!string.IsNullOrWhiteSpace(expectedParameterTypes))
+        {
+            CollectionAssert.Contains(kvpTags,
+                new KeyValuePair<string, string>("code.function.parameter.types", expectedParameterTypes));
+        }
+    }
+}