Dotnet test Data Collection problem, “Could not find data collector”












0















I am trying to create a custom data collector for several xUnit tests, but I am running into the following issue:




Data collection: Could not find data collector 'MyDataCollector'




To create the Data Collector in question, I've followed the tutorial in this article.



My Data Collector looks like this:



namespace Test.DataCollectorLibrary
{
[DataCollectorFriendlyName("MyDataCollector")]
[DataCollectorTypeUri("my://new/datacollector")]
public class MyDataCollector : DataCollector
{
int i = 0;
private string tempDirectoryPath = Path.GetTempPath();
private DataCollectionEnvironmentContext context;
private DataCollectionSink dataCollectionSink;
private DataCollectionLogger logger;

public override void Initialize(XmlElement configurationElement,
DataCollectionEvents events,
DataCollectionSink dataSink,
DataCollectionLogger logger,
DataCollectionEnvironmentContext environmentContext)
{
events.TestHostLaunched += this.TestHostLaunched_Handler;
events.SessionStart += this.SessionStarted_Handler;
events.SessionEnd += this.SessionEnded_Handler;
events.TestCaseStart += this.Events_TestCaseStart;
events.TestCaseEnd += this.Events_TestCaseEnd;

this.context = environmentContext ?? throw new ArgumentNullException(nameof(environmentContext));
this.dataCollectionSink = dataSink ?? throw new ArgumentNullException(nameof(dataSink));
this.logger = logger ?? throw new ArgumentNullException(nameof(logger));
}

private void Events_TestCaseStart(object sender, TestCaseStartEventArgs e)
{
this.logger.LogWarning(this.context.SessionDataCollectionContext, "TestCaseStarted " + e.TestCaseName);
this.logger.LogWarning(this.context.SessionDataCollectionContext, "TestCaseStarted " + e.TestElement.FullyQualifiedName);
var filename = Path.Combine(this.tempDirectoryPath, "testcasefilename" + i++ + ".txt");
File.WriteAllText(filename, string.Empty);
this.dataCollectionSink.SendFileAsync(e.Context, filename, true);
}


I am trying to run the tests using the "dotnet test" command, from the directory where the unit tests (including the C# project file) live, like so:




[unit tests directory]>dotnet test --collect:"MyDataCollector" --test-adapter-path "../Test.DataCollectorLibrary/bin/Debug/netcoreapp2.0"




The command above is run in PowerShell. Both the unit tests and the MyDataCollector are .NET Core 2.0 projects, in a Visual C# solution. In the "dotnet test" command above, "../Test.DataCollectorLibrary/bin/Debug/netcoreapp2.0" is the path to Test.DataCollectorLibrary.dll.



Here is the output in the PowerShell console:
enter image description here



What's the problem here? Why is my Data Collector not being found?










share|improve this question



























    0















    I am trying to create a custom data collector for several xUnit tests, but I am running into the following issue:




    Data collection: Could not find data collector 'MyDataCollector'




    To create the Data Collector in question, I've followed the tutorial in this article.



    My Data Collector looks like this:



    namespace Test.DataCollectorLibrary
    {
    [DataCollectorFriendlyName("MyDataCollector")]
    [DataCollectorTypeUri("my://new/datacollector")]
    public class MyDataCollector : DataCollector
    {
    int i = 0;
    private string tempDirectoryPath = Path.GetTempPath();
    private DataCollectionEnvironmentContext context;
    private DataCollectionSink dataCollectionSink;
    private DataCollectionLogger logger;

    public override void Initialize(XmlElement configurationElement,
    DataCollectionEvents events,
    DataCollectionSink dataSink,
    DataCollectionLogger logger,
    DataCollectionEnvironmentContext environmentContext)
    {
    events.TestHostLaunched += this.TestHostLaunched_Handler;
    events.SessionStart += this.SessionStarted_Handler;
    events.SessionEnd += this.SessionEnded_Handler;
    events.TestCaseStart += this.Events_TestCaseStart;
    events.TestCaseEnd += this.Events_TestCaseEnd;

    this.context = environmentContext ?? throw new ArgumentNullException(nameof(environmentContext));
    this.dataCollectionSink = dataSink ?? throw new ArgumentNullException(nameof(dataSink));
    this.logger = logger ?? throw new ArgumentNullException(nameof(logger));
    }

    private void Events_TestCaseStart(object sender, TestCaseStartEventArgs e)
    {
    this.logger.LogWarning(this.context.SessionDataCollectionContext, "TestCaseStarted " + e.TestCaseName);
    this.logger.LogWarning(this.context.SessionDataCollectionContext, "TestCaseStarted " + e.TestElement.FullyQualifiedName);
    var filename = Path.Combine(this.tempDirectoryPath, "testcasefilename" + i++ + ".txt");
    File.WriteAllText(filename, string.Empty);
    this.dataCollectionSink.SendFileAsync(e.Context, filename, true);
    }


    I am trying to run the tests using the "dotnet test" command, from the directory where the unit tests (including the C# project file) live, like so:




    [unit tests directory]>dotnet test --collect:"MyDataCollector" --test-adapter-path "../Test.DataCollectorLibrary/bin/Debug/netcoreapp2.0"




    The command above is run in PowerShell. Both the unit tests and the MyDataCollector are .NET Core 2.0 projects, in a Visual C# solution. In the "dotnet test" command above, "../Test.DataCollectorLibrary/bin/Debug/netcoreapp2.0" is the path to Test.DataCollectorLibrary.dll.



    Here is the output in the PowerShell console:
    enter image description here



    What's the problem here? Why is my Data Collector not being found?










    share|improve this question

























      0












      0








      0








      I am trying to create a custom data collector for several xUnit tests, but I am running into the following issue:




      Data collection: Could not find data collector 'MyDataCollector'




      To create the Data Collector in question, I've followed the tutorial in this article.



      My Data Collector looks like this:



      namespace Test.DataCollectorLibrary
      {
      [DataCollectorFriendlyName("MyDataCollector")]
      [DataCollectorTypeUri("my://new/datacollector")]
      public class MyDataCollector : DataCollector
      {
      int i = 0;
      private string tempDirectoryPath = Path.GetTempPath();
      private DataCollectionEnvironmentContext context;
      private DataCollectionSink dataCollectionSink;
      private DataCollectionLogger logger;

      public override void Initialize(XmlElement configurationElement,
      DataCollectionEvents events,
      DataCollectionSink dataSink,
      DataCollectionLogger logger,
      DataCollectionEnvironmentContext environmentContext)
      {
      events.TestHostLaunched += this.TestHostLaunched_Handler;
      events.SessionStart += this.SessionStarted_Handler;
      events.SessionEnd += this.SessionEnded_Handler;
      events.TestCaseStart += this.Events_TestCaseStart;
      events.TestCaseEnd += this.Events_TestCaseEnd;

      this.context = environmentContext ?? throw new ArgumentNullException(nameof(environmentContext));
      this.dataCollectionSink = dataSink ?? throw new ArgumentNullException(nameof(dataSink));
      this.logger = logger ?? throw new ArgumentNullException(nameof(logger));
      }

      private void Events_TestCaseStart(object sender, TestCaseStartEventArgs e)
      {
      this.logger.LogWarning(this.context.SessionDataCollectionContext, "TestCaseStarted " + e.TestCaseName);
      this.logger.LogWarning(this.context.SessionDataCollectionContext, "TestCaseStarted " + e.TestElement.FullyQualifiedName);
      var filename = Path.Combine(this.tempDirectoryPath, "testcasefilename" + i++ + ".txt");
      File.WriteAllText(filename, string.Empty);
      this.dataCollectionSink.SendFileAsync(e.Context, filename, true);
      }


      I am trying to run the tests using the "dotnet test" command, from the directory where the unit tests (including the C# project file) live, like so:




      [unit tests directory]>dotnet test --collect:"MyDataCollector" --test-adapter-path "../Test.DataCollectorLibrary/bin/Debug/netcoreapp2.0"




      The command above is run in PowerShell. Both the unit tests and the MyDataCollector are .NET Core 2.0 projects, in a Visual C# solution. In the "dotnet test" command above, "../Test.DataCollectorLibrary/bin/Debug/netcoreapp2.0" is the path to Test.DataCollectorLibrary.dll.



      Here is the output in the PowerShell console:
      enter image description here



      What's the problem here? Why is my Data Collector not being found?










      share|improve this question














      I am trying to create a custom data collector for several xUnit tests, but I am running into the following issue:




      Data collection: Could not find data collector 'MyDataCollector'




      To create the Data Collector in question, I've followed the tutorial in this article.



      My Data Collector looks like this:



      namespace Test.DataCollectorLibrary
      {
      [DataCollectorFriendlyName("MyDataCollector")]
      [DataCollectorTypeUri("my://new/datacollector")]
      public class MyDataCollector : DataCollector
      {
      int i = 0;
      private string tempDirectoryPath = Path.GetTempPath();
      private DataCollectionEnvironmentContext context;
      private DataCollectionSink dataCollectionSink;
      private DataCollectionLogger logger;

      public override void Initialize(XmlElement configurationElement,
      DataCollectionEvents events,
      DataCollectionSink dataSink,
      DataCollectionLogger logger,
      DataCollectionEnvironmentContext environmentContext)
      {
      events.TestHostLaunched += this.TestHostLaunched_Handler;
      events.SessionStart += this.SessionStarted_Handler;
      events.SessionEnd += this.SessionEnded_Handler;
      events.TestCaseStart += this.Events_TestCaseStart;
      events.TestCaseEnd += this.Events_TestCaseEnd;

      this.context = environmentContext ?? throw new ArgumentNullException(nameof(environmentContext));
      this.dataCollectionSink = dataSink ?? throw new ArgumentNullException(nameof(dataSink));
      this.logger = logger ?? throw new ArgumentNullException(nameof(logger));
      }

      private void Events_TestCaseStart(object sender, TestCaseStartEventArgs e)
      {
      this.logger.LogWarning(this.context.SessionDataCollectionContext, "TestCaseStarted " + e.TestCaseName);
      this.logger.LogWarning(this.context.SessionDataCollectionContext, "TestCaseStarted " + e.TestElement.FullyQualifiedName);
      var filename = Path.Combine(this.tempDirectoryPath, "testcasefilename" + i++ + ".txt");
      File.WriteAllText(filename, string.Empty);
      this.dataCollectionSink.SendFileAsync(e.Context, filename, true);
      }


      I am trying to run the tests using the "dotnet test" command, from the directory where the unit tests (including the C# project file) live, like so:




      [unit tests directory]>dotnet test --collect:"MyDataCollector" --test-adapter-path "../Test.DataCollectorLibrary/bin/Debug/netcoreapp2.0"




      The command above is run in PowerShell. Both the unit tests and the MyDataCollector are .NET Core 2.0 projects, in a Visual C# solution. In the "dotnet test" command above, "../Test.DataCollectorLibrary/bin/Debug/netcoreapp2.0" is the path to Test.DataCollectorLibrary.dll.



      Here is the output in the PowerShell console:
      enter image description here



      What's the problem here? Why is my Data Collector not being found?







      c# unit-testing xunit data-collection dotnet-test






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 20 '18 at 14:49









      lukegflukegf

      89221028




      89221028
























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