Fix error when a TestMethod element does not have a className attribute in a trx file

__tests__/__outputs__/dotnet-xunitv3.md

@@ -0,0 +1,26 @@
+![Tests failed](https://img.shields.io/badge/tests-1%20passed%2C%203%20failed-critical)
+|Report|Passed|Failed|Skipped|Time|
+|:---|---:|---:|---:|---:|
+|[fixtures/dotnet-xunitv3.trx](#user-content-r0)|1 ✅|3 ❌||267ms|
+## ❌ <a id="user-content-r0" href="#user-content-r0">fixtures/dotnet-xunitv3.trx</a>
+**4** tests were completed in **267ms** with **1** passed, **3** failed and **0** skipped.
+|Test suite|Passed|Failed|Skipped|Time|
+|:---|---:|---:|---:|---:|
+|[DotnetTests.XUnitV3Tests.FixtureTests](#user-content-r0s0)|1 ✅|1 ❌||18ms|
+|[Unclassified](#user-content-r0s1)||2 ❌||0ms|
+### ❌ <a id="user-content-r0s0" href="#user-content-r0s0">DotnetTests.XUnitV3Tests.FixtureTests</a>
+```
+❌ Failing_Test
+	Assert.Null() Failure: Value is not null
+	Expected: null
+	Actual:   Fixture { }
+	   at DotnetTests.XUnitV3Tests.FixtureTests.Failing_Test() in /_/reports/dotnet/DotnetTests.XUnitV3Tests/FixtureTests.cs:line 25
+	   at System.RuntimeMethodHandle.InvokeMethod(Object target, Void** arguments, Signature sig, Boolean isConstructor)
+	   at System.Reflection.MethodBaseInvoker.InvokeWithNoArgs(Object obj, BindingFlags invokeAttr)
+✅ Passing_Test
+```
+### ❌ <a id="user-content-r0s1" href="#user-content-r0s1">Unclassified</a>
+```
+❌ [Test Class Cleanup Failure (DotnetTests.XUnitV3Tests.FixtureTests.Failing_Test)]
+❌ [Test Class Cleanup Failure (DotnetTests.XUnitV3Tests.FixtureTests.Passing_Test)]
+```

__tests__/__snapshots__/dotnet-trx.test.ts.snap

@@ -1,6 +1,6 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`dotnet-trx tests matches report snapshot (only failed tests) 1`] = `
+exports[`dotnet-trx tests matches dotnet-trx report snapshot 1`] = `
 TestRunResult {
   "path": "fixtures/dotnet-trx.trx",
   "suites": [
@@ -135,7 +135,77 @@ Actual:   False
 }
 `;
 
-exports[`dotnet-trx tests matches report snapshot 1`] = `
+exports[`dotnet-trx tests matches dotnet-xunitv3 report snapshot 1`] = `
+TestRunResult {
+  "path": "fixtures/dotnet-xunitv3.trx",
+  "suites": [
+    TestSuiteResult {
+      "groups": [
+        TestGroupResult {
+          "name": null,
+          "tests": [
+            TestCaseResult {
+              "error": {
+                "details": "Assert.Null() Failure: Value is not null
+Expected: null
+Actual:   Fixture { }
+   at DotnetTests.XUnitV3Tests.FixtureTests.Failing_Test() in /_/reports/dotnet/DotnetTests.XUnitV3Tests/FixtureTests.cs:line 25
+   at System.RuntimeMethodHandle.InvokeMethod(Object target, Void** arguments, Signature sig, Boolean isConstructor)
+   at System.Reflection.MethodBaseInvoker.InvokeWithNoArgs(Object obj, BindingFlags invokeAttr)",
+                "line": 25,
+                "message": "Assert.Null() Failure: Value is not null
+Expected: null
+Actual:   Fixture { }
+   at DotnetTests.XUnitV3Tests.FixtureTests.Failing_Test() in /_/reports/dotnet/DotnetTests.XUnitV3Tests/FixtureTests.cs:line 25
+   at System.RuntimeMethodHandle.InvokeMethod(Object target, Void** arguments, Signature sig, Boolean isConstructor)
+   at System.Reflection.MethodBaseInvoker.InvokeWithNoArgs(Object obj, BindingFlags invokeAttr)",
+                "path": "DotnetTests.XUnitV3Tests/FixtureTests.cs",
+              },
+              "name": "Failing_Test",
+              "result": "failed",
+              "time": 17.0545,
+            },
+            TestCaseResult {
+              "error": undefined,
+              "name": "Passing_Test",
+              "result": "success",
+              "time": 0.8786,
+            },
+          ],
+        },
+      ],
+      "name": "DotnetTests.XUnitV3Tests.FixtureTests",
+      "totalTime": undefined,
+    },
+    TestSuiteResult {
+      "groups": [
+        TestGroupResult {
+          "name": null,
+          "tests": [
+            TestCaseResult {
+              "error": undefined,
+              "name": "[Test Class Cleanup Failure (DotnetTests.XUnitV3Tests.FixtureTests.Failing_Test)]",
+              "result": "failed",
+              "time": 0,
+            },
+            TestCaseResult {
+              "error": undefined,
+              "name": "[Test Class Cleanup Failure (DotnetTests.XUnitV3Tests.FixtureTests.Passing_Test)]",
+              "result": "failed",
+              "time": 0,
+            },
+          ],
+        },
+      ],
+      "name": "Unclassified",
+      "totalTime": undefined,
+    },
+  ],
+  "totalTime": 267,
+}
+`;
+
+exports[`dotnet-trx tests matches report snapshot (only failed tests) 1`] = `
 TestRunResult {
   "path": "fixtures/dotnet-trx.trx",
   "suites": [

__tests__/dotnet-trx.test.ts

@@ -39,15 +39,19 @@ describe('dotnet-trx tests', () => {
     expect(result.result).toBe('success')
   })
 
-  it('matches report snapshot', async () => {
-    const fixturePath = path.join(__dirname, 'fixtures', 'dotnet-trx.trx')
-    const outputPath = path.join(__dirname, '__outputs__', 'dotnet-trx.md')
+  it.each([['dotnet-trx'], ['dotnet-xunitv3']])('matches %s report snapshot', async reportName => {
+    const fixturePath = path.join(__dirname, 'fixtures', `${reportName}.trx`)
+    const outputPath = path.join(__dirname, '__outputs__', `${reportName}.md`)
     const filePath = normalizeFilePath(path.relative(__dirname, fixturePath))
     const fileContent = fs.readFileSync(fixturePath, {encoding: 'utf8'})
 
     const opts: ParseOptions = {
       parseErrors: true,
-      trackedFiles: ['DotnetTests.Unit/Calculator.cs', 'DotnetTests.XUnitTests/CalculatorTests.cs']
+      trackedFiles: [
+        'DotnetTests.Unit/Calculator.cs',
+        'DotnetTests.XUnitTests/CalculatorTests.cs',
+        'DotnetTests.XUnitV3Tests/FixtureTests.cs'
+      ]
       //workDir: 'C:/Users/Michal/Workspace/dorny/test-check/reports/dotnet/'
     }
 

__tests__/fixtures/dotnet-xunitv3.trx

@@ -0,0 +1,60 @@
+<?xml version="1.0" encoding="utf-8"?>
+<TestRun id="54e29175-539e-48a3-a634-3a1855a0ed38" name="@Asterix 2025-06-22 14:17:12.022" xmlns="http://microsoft.com/schemas/VisualStudio/TeamTest/2010">
+  <Times creation="2025-06-22T14:17:11.756535Z" queuing="2025-06-22T14:17:11.756535Z" start="2025-06-22T14:17:11.756535Z" finish="2025-06-22T14:17:12.023063Z" />
+  <TestSettings name="default" id="932e6c6f-3e5b-4392-ad65-e04c1ef476b5">
+    <Deployment runDeploymentRoot="_Asterix_2025-06-22_14_17_12.022" />
+  </TestSettings>
+  <Results>
+    <UnitTestResult executionId="37242a1f-ca3e-44b3-8142-71e510480975" testId="f846a1e6-0b68-2ac6-9a66-f417926e3238" testName="DotnetTests.XUnitV3Tests.FixtureTests.Failing_Test" computerName="Asterix" duration="00:00:00.0170545" startTime="2025-06-22T14:17:11.9339840+00:00" endTime="2025-06-22T14:17:11.9750850+00:00" testType="13CDC9D9-DDB5-4fa4-A97D-D965CCFC6D4B" outcome="Failed" testListId="8C84FA94-04C1-424b-9868-57A2D4851A1D" relativeResultsDirectory="37242a1f-ca3e-44b3-8142-71e510480975">
+      <Output>
+        <ErrorInfo>
+          <Message>Assert.Null() Failure: Value is not null
+Expected: null
+Actual:   Fixture { }</Message>
+          <StackTrace>   at DotnetTests.XUnitV3Tests.FixtureTests.Failing_Test() in /_/reports/dotnet/DotnetTests.XUnitV3Tests/FixtureTests.cs:line 25
+   at System.RuntimeMethodHandle.InvokeMethod(Object target, Void** arguments, Signature sig, Boolean isConstructor)
+   at System.Reflection.MethodBaseInvoker.InvokeWithNoArgs(Object obj, BindingFlags invokeAttr)</StackTrace>
+        </ErrorInfo>
+      </Output>
+    </UnitTestResult>
+    <UnitTestResult executionId="592aaafb-4dc0-49dc-b3c7-bcd81218d58a" testId="3ee930dd-8a75-92a0-0d90-373833166db1" testName="DotnetTests.XUnitV3Tests.FixtureTests.Passing_Test" computerName="Asterix" duration="00:00:00.0008786" startTime="2025-06-22T14:17:11.9819890+00:00" endTime="2025-06-22T14:17:11.9833560+00:00" testType="13CDC9D9-DDB5-4fa4-A97D-D965CCFC6D4B" outcome="Passed" testListId="8C84FA94-04C1-424b-9868-57A2D4851A1D" relativeResultsDirectory="592aaafb-4dc0-49dc-b3c7-bcd81218d58a" />
+    <UnitTestResult executionId="19c42d36-f4d7-4046-bcc6-dd9b85c9ca2b" testId="372fb60f-1f5b-a52e-032e-41a7556021e8" testName="[Test Class Cleanup Failure (DotnetTests.XUnitV3Tests.FixtureTests.Passing_Test)]" computerName="Asterix" duration="00:00:00" startTime="2025-06-22T14:17:12.0320280+00:00" endTime="2025-06-22T14:17:12.0320290+00:00" testType="13CDC9D9-DDB5-4fa4-A97D-D965CCFC6D4B" outcome="Failed" testListId="8C84FA94-04C1-424b-9868-57A2D4851A1D" relativeResultsDirectory="19c42d36-f4d7-4046-bcc6-dd9b85c9ca2b" />
+    <UnitTestResult executionId="b7f40170-1e2c-45ce-b5e4-5bf49fd4c360" testId="a69083a1-56b4-3da3-2d7c-66fda374fd8e" testName="[Test Class Cleanup Failure (DotnetTests.XUnitV3Tests.FixtureTests.Failing_Test)]" computerName="Asterix" duration="00:00:00" startTime="2025-06-22T14:17:12.0320420+00:00" endTime="2025-06-22T14:17:12.0320430+00:00" testType="13CDC9D9-DDB5-4fa4-A97D-D965CCFC6D4B" outcome="Failed" testListId="8C84FA94-04C1-424b-9868-57A2D4851A1D" relativeResultsDirectory="b7f40170-1e2c-45ce-b5e4-5bf49fd4c360" />
+  </Results>
+  <TestDefinitions>
+    <UnitTest name="DotnetTests.XUnitV3Tests.FixtureTests.Failing_Test" storage="~/test-reporter/reports/dotnet/dotnettests.xunitv3tests/bin/debug/net8.0/dotnettests.xunitv3tests.dll" id="f846a1e6-0b68-2ac6-9a66-f417926e3238">
+      <Execution id="37242a1f-ca3e-44b3-8142-71e510480975" />
+      <TestMethod codeBase="~/test-reporter/reports/dotnet/DotnetTests.XUnitV3Tests/bin/Debug/net8.0/DotnetTests.XUnitV3Tests.dll" adapterTypeName="executor://30ea7c6e-dd24-4152-a360-1387158cd41d/2.0.3" className="DotnetTests.XUnitV3Tests.FixtureTests" name="DotnetTests.XUnitV3Tests.FixtureTests.Failing_Test" />
+    </UnitTest>
+    <UnitTest name="DotnetTests.XUnitV3Tests.FixtureTests.Passing_Test" storage="~/test-reporter/reports/dotnet/dotnettests.xunitv3tests/bin/debug/net8.0/dotnettests.xunitv3tests.dll" id="3ee930dd-8a75-92a0-0d90-373833166db1">
+      <Execution id="592aaafb-4dc0-49dc-b3c7-bcd81218d58a" />
+      <TestMethod codeBase="~/test-reporter/reports/dotnet/DotnetTests.XUnitV3Tests/bin/Debug/net8.0/DotnetTests.XUnitV3Tests.dll" adapterTypeName="executor://30ea7c6e-dd24-4152-a360-1387158cd41d/2.0.3" className="DotnetTests.XUnitV3Tests.FixtureTests" name="DotnetTests.XUnitV3Tests.FixtureTests.Passing_Test" />
+    </UnitTest>
+    <UnitTest name="[Test Class Cleanup Failure (DotnetTests.XUnitV3Tests.FixtureTests.Passing_Test)]" storage="~/test-reporter/reports/dotnet/dotnettests.xunitv3tests/bin/debug/net8.0/dotnettests.xunitv3tests.dll" id="372fb60f-1f5b-a52e-032e-41a7556021e8">
+      <Execution id="19c42d36-f4d7-4046-bcc6-dd9b85c9ca2b" />
+      <TestMethod codeBase="~/test-reporter/reports/dotnet/DotnetTests.XUnitV3Tests/bin/Debug/net8.0/DotnetTests.XUnitV3Tests.dll" adapterTypeName="executor://30ea7c6e-dd24-4152-a360-1387158cd41d/2.0.3" name="[Test Class Cleanup Failure (DotnetTests.XUnitV3Tests.FixtureTests.Passing_Test)]" />
+    </UnitTest>
+    <UnitTest name="[Test Class Cleanup Failure (DotnetTests.XUnitV3Tests.FixtureTests.Failing_Test)]" storage="~/test-reporter/reports/dotnet/dotnettests.xunitv3tests/bin/debug/net8.0/dotnettests.xunitv3tests.dll" id="a69083a1-56b4-3da3-2d7c-66fda374fd8e">
+      <Execution id="b7f40170-1e2c-45ce-b5e4-5bf49fd4c360" />
+      <TestMethod codeBase="~/test-reporter/reports/dotnet/DotnetTests.XUnitV3Tests/bin/Debug/net8.0/DotnetTests.XUnitV3Tests.dll" adapterTypeName="executor://30ea7c6e-dd24-4152-a360-1387158cd41d/2.0.3" name="[Test Class Cleanup Failure (DotnetTests.XUnitV3Tests.FixtureTests.Failing_Test)]" />
+    </UnitTest>
+  </TestDefinitions>
+  <TestEntries>
+    <TestEntry testId="f846a1e6-0b68-2ac6-9a66-f417926e3238" executionId="37242a1f-ca3e-44b3-8142-71e510480975" testListId="8C84FA94-04C1-424b-9868-57A2D4851A1D" />
+    <TestEntry testId="3ee930dd-8a75-92a0-0d90-373833166db1" executionId="592aaafb-4dc0-49dc-b3c7-bcd81218d58a" testListId="8C84FA94-04C1-424b-9868-57A2D4851A1D" />
+    <TestEntry testId="372fb60f-1f5b-a52e-032e-41a7556021e8" executionId="19c42d36-f4d7-4046-bcc6-dd9b85c9ca2b" testListId="8C84FA94-04C1-424b-9868-57A2D4851A1D" />
+    <TestEntry testId="a69083a1-56b4-3da3-2d7c-66fda374fd8e" executionId="b7f40170-1e2c-45ce-b5e4-5bf49fd4c360" testListId="8C84FA94-04C1-424b-9868-57A2D4851A1D" />
+  </TestEntries>
+  <TestLists>
+    <TestList name="Results Not in a List" id="8C84FA94-04C1-424b-9868-57A2D4851A1D" />
+    <TestList name="All Loaded Results" id="19431567-8539-422a-85d7-44ee4e166bda" />
+  </TestLists>
+  <ResultSummary outcome="Failed">
+    <Counters total="4" executed="4" passed="1" failed="3" error="0" timeout="0" aborted="0" inconclusive="0" passedButRunAborted="0" notRunnable="0" notExecuted="0" disconnected="0" warning="0" completed="0" inProgress="0" pending="0" />
+    <RunInfos>
+      <RunInfo computerName="Asterix" outcome="Error" timestamp="2025-06-22T14:17:12.033401">
+        <Text>Exit code indicates failure: '2'. Please refer to https://aka.ms/testingplatform/exitcodes for more information.</Text>
+      </RunInfo>
+    </RunInfos>
+  </ResultSummary>
+</TestRun>

package.json

@@ -16,6 +16,7 @@
     "all": "npm run build && npm run format && npm run lint && npm run package && npm test",
     "dart-fixture": "cd \"reports/dart\" && dart test --file-reporter=\"json:../../__tests__/fixtures/dart-json.json\"",
     "dotnet-fixture": "dotnet test reports/dotnet/DotnetTests.XUnitTests --logger \"trx;LogFileName=../../../../__tests__/fixtures/dotnet-trx.trx\"",
+    "dotnet-xunitv3-fixture": "dotnet run --project reports/dotnet/DotnetTests.XUnitV3Tests/DotnetTests.XUnitV3Tests.csproj --report-trx --report-trx-filename dotnet-xunitv3.trx --results-directory __tests__/fixtures/",
     "dotnet-nunit-fixture": "nunit.exe reports/dotnet/DotnetTests.NUnitV3Tests/bin/Debug/netcoreapp3.1/DotnetTests.NUnitV3Tests.dll --result=__tests__/fixtures/dotnet-nunit.xml",
     "dotnet-nunit-legacy-fixture": "nunit-console.exe reports/dotnet-nunit-legacy/NUnitLegacy.sln --result=__tests__/fixtures/dotnet-nunit-legacy.xml",
     "golang-json-fixture": "go test -v -json -timeout 5s ./reports/go | tee __tests__/fixtures/golang-json.json",

reports/dotnet/DotnetTests.NUnitV3Tests/CalculatorTests.cs

@@ -40,7 +40,7 @@ public void Exception_In_Test()
         }
 
         [Test]
-        [Timeout(1)]
+        [CancelAfter(1)]
         public void Timeout_Test()
         {
             Thread.Sleep(100);
@@ -58,7 +58,7 @@ public void Skipped_Test()
         [TestCase(3)]
         public void Is_Even_Number(int i)
         {
-            Assert.True(i % 2 == 0);
+            Assert.That(i % 2 == 0);
         }
     }
 }

reports/dotnet/DotnetTests.NUnitV3Tests/DotnetTests.NUnitV3Tests.csproj

@@ -1,14 +1,13 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
-
-    <IsPackable>false</IsPackable>
+    <TargetFramework>net8.0</TargetFramework>
+    <DeterministicSourcePaths>true</DeterministicSourcePaths>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="NUnit" Version="3.13.2" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.5.0" />
+    <PackageReference Include="NUnit" Version="4.3.2" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
   </ItemGroup>
 
   <ItemGroup>

reports/dotnet/DotnetTests.Unit/DotnetTests.Unit.csproj

@@ -2,6 +2,7 @@
 
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
+    <DeterministicSourcePaths>true</DeterministicSourcePaths>
   </PropertyGroup>
 
 </Project>

reports/dotnet/DotnetTests.XUnitTests/DotnetTests.XUnitTests.csproj

@@ -1,16 +1,14 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
-
-    <IsPackable>false</IsPackable>
+    <TargetFramework>net8.0</TargetFramework>
+    <DeterministicSourcePaths>true</DeterministicSourcePaths>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.5.0" />
-    <PackageReference Include="xunit" Version="2.4.0" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.0" />
-    <PackageReference Include="coverlet.collector" Version="1.2.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
+    <PackageReference Include="xunit" Version="2.9.3" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.1" />
   </ItemGroup>
 
   <ItemGroup>

reports/dotnet/DotnetTests.XUnitV3Tests/DotnetTests.XUnitV3Tests.csproj

@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <OutputType>exe</OutputType>
+    <DeterministicSourcePaths>true</DeterministicSourcePaths>
+    <UseMicrosoftTestingPlatformRunner>true</UseMicrosoftTestingPlatformRunner>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Testing.Extensions.TrxReport" Version="1.7.3" />
+    <PackageReference Include="xunit.v3" Version="2.0.3" />
+  </ItemGroup>
+
+</Project>

reports/dotnet/DotnetTests.XUnitV3Tests/FixtureTests.cs

@@ -0,0 +1,27 @@
+using System;
+using Xunit;
+
+namespace DotnetTests.XUnitV3Tests;
+
+public sealed class Fixture : IDisposable
+{
+    public void Dispose()
+    {
+        throw new InvalidOperationException("Failure during fixture disposal");
+    }
+}
+
+public class FixtureTests(Fixture fixture) : IClassFixture<Fixture>
+{
+    [Fact]
+    public void Passing_Test()
+    {
+        Assert.NotNull(fixture);
+    }
+
+    [Fact]
+    public void Failing_Test()
+    {
+        Assert.Null(fixture);
+    }
+}

reports/dotnet/DotnetTests.sln

@@ -11,6 +11,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "DotnetTests.XUnitTests", "D
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DotnetTests.NUnitV3Tests", "DotnetTests.NUnitV3Tests\DotnetTests.NUnitV3Tests.csproj", "{81023ED7-56CB-47E9-86C5-9125A0873C55}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DotnetTests.XUnitV3Tests", "DotnetTests.XUnitV3Tests\DotnetTests.XUnitV3Tests.csproj", "{D35E65DC-62EF-4612-9FF3-66F5600BFB74}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -29,13 +31,18 @@ Global
 		{81023ED7-56CB-47E9-86C5-9125A0873C55}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{81023ED7-56CB-47E9-86C5-9125A0873C55}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{81023ED7-56CB-47E9-86C5-9125A0873C55}.Release|Any CPU.Build.0 = Release|Any CPU
+		{D35E65DC-62EF-4612-9FF3-66F5600BFB74}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D35E65DC-62EF-4612-9FF3-66F5600BFB74}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D35E65DC-62EF-4612-9FF3-66F5600BFB74}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D35E65DC-62EF-4612-9FF3-66F5600BFB74}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
 	EndGlobalSection
 	GlobalSection(NestedProjects) = preSolution
 		{F8607EDB-D25D-47AA-8132-38ACA242E845} = {BCAC3B31-ADB1-4221-9D5B-182EE868648C}
 		{81023ED7-56CB-47E9-86C5-9125A0873C55} = {BCAC3B31-ADB1-4221-9D5B-182EE868648C}
+		{D35E65DC-62EF-4612-9FF3-66F5600BFB74} = {BCAC3B31-ADB1-4221-9D5B-182EE868648C}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {6ED5543C-74AA-4B21-8050-943550F3F66E}

src/parsers/dotnet-trx/dotnet-trx-parser.ts

@@ -81,7 +81,7 @@ export class DotnetTrxParser implements TestParser {
 
     const testClasses: {[name: string]: TestClass} = {}
     for (const r of unitTestsResults) {
-      const className = r.test.TestMethod[0].$.className
+      const className = r.test.TestMethod[0].$.className ?? "Unclassified"
       let tc = testClasses[className]
       if (tc === undefined) {
         tc = new TestClass(className)