vstest: Unable to run NUnit unit test. 'Unable to find testhost.dll Please publish your test project and retry.'

Description

Unable to run NUnit unit test. ‘Unable to find testhost.dll Please publish your test project and retry.’

Diagnostic logs

[12/12/2018 8:33:52 AM Informational] ------ Discover test started ------ [12/12/2018 8:33:54 AM Error] Microsoft.VisualStudio.TestPlatform.ObjectModel.TestPlatformException: Unable to find F:\Projects\Foundation\Foundation.Core\Foundation.Common.Tests\bin\Debug\netcoreapp2.0\testhost.dll. Please publish your test project and retry. at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Hosting.DotnetTestHostManager.GetTestHostPath(String runtimeConfigDevPath, String depsFilePath, String sourceDirectory) at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Hosting.DotnetTestHostManager.GetTestHostProcessStartInfo(IEnumerable1 sources, IDictionary2 environmentVariables, TestRunnerConnectionInfo connectionInfo) at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Client.ProxyOperationManager.SetupChannel(IEnumerable1 sources) at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Client.ProxyDiscoveryManager.DiscoverTests(DiscoveryCriteria discoveryCriteria, ITestDiscoveryEventsHandler2 eventHandler) [12/12/2018 8:33:55 AM Warning] No test is available in F:\Projects\Foundation\Foundation.Core\Foundation.Common.Unity\bin\Debug\netstandard2.0\Foundation.Common.Unity.dll F:\Projects\Foundation\Foundation.Core\Foundation.Common\bin\Debug\netstandard2.0\Foundation.Common.dll F:\Projects\Foundation\Foundation.Core\Foundation.Master.Unity\bin\Debug\netstandard2.0\Foundation.Master.Unity.dll F:\Projects\Foundation\Foundation.Core\Foundation.Master\bin\Debug\netstandard2.0\Foundation.Master.dll F:\Projects\LiteNetLib\LibSample\bin\Debug\LibSample.exe F:\Projects\LiteNetLib\LiteNetLibStandard\bin\Debug\netstandard2.0\LiteNetLib.dll. Make sure that test discoverer & executors are registered and platform & framework version settings are appropriate and try again. [12/12/2018 8:33:55 AM Error] Microsoft.VisualStudio.TestPlatform.ObjectModel.TestPlatformException: Framework35 is not supported. For projects targeting .Net Framework 3.5, please use Framework40 to run tests in CLR 4.0 "compatibility mode". at Microsoft.VisualStudio.TestPlatform.CommandLine.TestPlatformHelpers.TestRequestManager.UpdateRunSettingsIfRequired(String runsettingsXml, List1 sources, String& updatedRunSettingsXml) at Microsoft.VisualStudio.TestPlatform.CommandLine.TestPlatformHelpers.TestRequestManager.DiscoverTests(DiscoveryRequestPayload discoveryPayload, ITestDiscoveryEventsRegistrar discoveryEventsRegistrar, ProtocolConfig protocolConfig) at Microsoft.VisualStudio.TestPlatform.Client.DesignMode.DesignModeClient.<>c__DisplayClass20_0.<StartDiscovery>b__0() [12/12/2018 8:33:55 AM Informational] ========== Discover test finished: 0 found (0:00:03.71027) ========== [12/12/2018 8:34:11 AM Informational] ------ Discover test started ------ [12/12/2018 8:34:11 AM Error] Microsoft.VisualStudio.TestPlatform.ObjectModel.TestPlatformException: Unable to find F:\Projects\Foundation\Foundation.Core\Foundation.Common.Tests\bin\Debug\netcoreapp2.0\testhost.dll. Please publish your test project and retry. at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Hosting.DotnetTestHostManager.GetTestHostPath(String runtimeConfigDevPath, String depsFilePath, String sourceDirectory) at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Hosting.DotnetTestHostManager.GetTestHostProcessStartInfo(IEnumerable1 sources, IDictionary2 environmentVariables, TestRunnerConnectionInfo connectionInfo) at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Client.ProxyOperationManager.SetupChannel(IEnumerable1 sources) at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Client.ProxyDiscoveryManager.DiscoverTests(DiscoveryCriteria discoveryCriteria, ITestDiscoveryEventsHandler2 eventHandler) [12/12/2018 8:34:11 AM Informational] ========== Discover test finished: 0 found (0:00:00.1339987) ========== [12/12/2018 8:34:45 AM Informational] ------ Run test started ------ [12/12/2018 8:34:45 AM Error] Unable to find F:\Projects\Foundation\Foundation.Core\Foundation.Common.Tests\bin\Debug\netcoreapp2.0\testhost.dll. Please publish your test project and retry. [12/12/2018 8:34:45 AM Error] Unable to find F:\Projects\Foundation\Foundation.Core\Foundation.Common.Tests\bin\Debug\netcoreapp2.0\testhost.dll. Please publish your test project and retry. [12/12/2018 8:34:45 AM Informational] ========== Run test finished: 0 run (0:00:00.6249972) ========== [12/12/2018 8:36:17 AM Informational] ------ Run test started ------ [12/12/2018 8:36:17 AM Error] Unable to find F:\Projects\Foundation\Foundation.Core\Foundation.Common.Tests\bin\Debug\netcoreapp2.0\testhost.dll. Please publish your test project and retry. [12/12/2018 8:36:17 AM Error] Unable to find F:\Projects\Foundation\Foundation.Core\Foundation.Common.Tests\bin\Debug\netcoreapp2.0\testhost.dll. Please publish your test project and retry. [12/12/2018 8:36:17 AM Informational] ========== Run test finished: 0 run (0:00:00.0799997) ========== [12/12/2018 8:37:43 AM Informational] ------ Discover test started ------ [12/12/2018 8:37:43 AM Error] Microsoft.VisualStudio.TestPlatform.ObjectModel.TestPlatformException: Unable to find F:\Projects\Foundation\Foundation.Core\Foundation.Common.Tests\bin\Debug\netcoreapp2.0\testhost.dll. Please publish your test project and retry. at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Hosting.DotnetTestHostManager.GetTestHostPath(String runtimeConfigDevPath, String depsFilePath, String sourceDirectory) at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Hosting.DotnetTestHostManager.GetTestHostProcessStartInfo(IEnumerable1 sources, IDictionary2 environmentVariables, TestRunnerConnectionInfo connectionInfo) at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Client.ProxyOperationManager.SetupChannel(IEnumerable1 sources) at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Client.ProxyDiscoveryManager.DiscoverTests(DiscoveryCriteria discoveryCriteria, ITestDiscoveryEventsHandler2 eventHandler) [12/12/2018 8:37:44 AM Warning] No test is available in F:\Projects\Foundation\Foundation.Core\Foundation.Common.Unity\bin\Debug\netstandard2.0\Foundation.Common.Unity.dll F:\Projects\Foundation\Foundation.Core\Foundation.Common\bin\Debug\netstandard2.0\Foundation.Common.dll F:\Projects\Foundation\Foundation.Core\Foundation.Master.Unity\bin\Debug\netstandard2.0\Foundation.Master.Unity.dll F:\Projects\Foundation\Foundation.Core\Foundation.Master\bin\Debug\netstandard2.0\Foundation.Master.dll F:\Projects\LiteNetLib\LibSample\bin\Debug\LibSample.exe F:\Projects\LiteNetLib\LiteNetLibStandard\bin\Debug\netstandard2.0\LiteNetLib.dll. Make sure that test discoverer & executors are registered and platform & framework version settings are appropriate and try again. [12/12/2018 8:37:44 AM Error] Microsoft.VisualStudio.TestPlatform.ObjectModel.TestPlatformException: Framework35 is not supported. For projects targeting .Net Framework 3.5, please use Framework40 to run tests in CLR 4.0 “compatibility mode”. at Microsoft.VisualStudio.TestPlatform.CommandLine.TestPlatformHelpers.TestRequestManager.UpdateRunSettingsIfRequired(String runsettingsXml, List1 sources, String& updatedRunSettingsXml) at Microsoft.VisualStudio.TestPlatform.CommandLine.TestPlatformHelpers.TestRequestManager.DiscoverTests(DiscoveryRequestPayload discoveryPayload, ITestDiscoveryEventsRegistrar discoveryEventsRegistrar, ProtocolConfig protocolConfig) at Microsoft.VisualStudio.TestPlatform.Client.DesignMode.DesignModeClient.<>c__DisplayClass20_0.<StartDiscovery>b__0() [12/12/2018 8:37:44 AM Informational] ========== Discover test finished: 0 found (0:00:01.0479967) ========== [12/12/2018 8:37:44 AM Informational] ------ Run test started ------ [12/12/2018 8:37:44 AM Error] Unable to find F:\Projects\Foundation\Foundation.Core\Foundation.Common.Tests\bin\Debug\netcoreapp2.0\testhost.dll. Please publish your test project and retry. [12/12/2018 8:37:44 AM Error] Unable to find F:\Projects\Foundation\Foundation.Core\Foundation.Common.Tests\bin\Debug\netcoreapp2.0\testhost.dll. Please publish your test project and retry. [12/12/2018 8:37:44 AM Informational] ========== Run test finished: 0 run (0:00:00.1630037) ========== [12/12/2018 8:38:45 AM Informational] ------ Discover test started ------ [12/12/2018 8:38:45 AM Error] Microsoft.VisualStudio.TestPlatform.ObjectModel.TestPlatformException: Unable to find F:\Projects\Foundation\Foundation.Core\Foundation.Common.Tests\bin\Debug\netcoreapp2.0\testhost.dll. Please publish your test project and retry. at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Hosting.DotnetTestHostManager.GetTestHostPath(String runtimeConfigDevPath, String depsFilePath, String sourceDirectory) at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Hosting.DotnetTestHostManager.GetTestHostProcessStartInfo(IEnumerable1 sources, IDictionary2 environmentVariables, TestRunnerConnectionInfo connectionInfo) at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Client.ProxyOperationManager.SetupChannel(IEnumerable1 sources) at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Client.ProxyDiscoveryManager.DiscoverTests(DiscoveryCriteria discoveryCriteria, ITestDiscoveryEventsHandler2 eventHandler) [12/12/2018 8:38:46 AM Warning] No test is available in F:\Projects\Foundation\Foundation.Core\Foundation.Common\bin\Debug\netstandard2.0\Foundation.Common.dll F:\Projects\LiteNetLib\LiteNetLibStandard\bin\Debug\netstandard2.0\LiteNetLib.dll. Make sure that test discoverer & executors are registered and platform & framework version settings are appropriate and try again. [12/12/2018 8:38:47 AM Informational] ========== Discover test finished: 0 found (0:00:01.2309981) ========== [12/12/2018 8:38:53 AM Informational] ------ Run test started ------ [12/12/2018 8:38:53 AM Error] Unable to find F:\Projects\Foundation\Foundation.Core\Foundation.Common.Tests\bin\Debug\netcoreapp2.0\testhost.dll. Please publish your test project and retry. [12/12/2018 8:38:53 AM Error] Unable to find F:\Projects\Foundation\Foundation.Core\Foundation.Common.Tests\bin\Debug\netcoreapp2.0\testhost.dll. Please publish your test project and retry. [12/12/2018 8:38:53 AM Informational] ========== Run test finished: 0 run (0:00:00.0249969) ========== [12/12/2018 8:42:59 AM Informational] ------ Run test started ------ [12/12/2018 8:42:59 AM Error] Unable to find F:\Projects\Foundation\Foundation.Core\Foundation.Common.Tests\bin\Debug\netcoreapp2.0\testhost.dll. Please publish your test project and retry. [12/12/2018 8:42:59 AM Error] Unable to find F:\Projects\Foundation\Foundation.Core\Foundation.Common.Tests\bin\Debug\netcoreapp2.0\testhost.dll. Please publish your test project and retry. [12/12/2018 8:42:59 AM Informational] ========== Run test finished: 0 run (0:00:00.1819978) ========== [12/12/2018 8:43:49 AM Informational] ------ Run test started ------ [12/12/2018 8:43:49 AM Error] Unable to find F:\Projects\Foundation\Foundation.Core\Foundation.Common.Tests\bin\Debug\netcoreapp2.0\testhost.dll. Please publish your test project and retry. [12/12/2018 8:43:49 AM Error] Unable to find F:\Projects\Foundation\Foundation.Core\Foundation.Common.Tests\bin\Debug\netcoreapp2.0\testhost.dll. Please publish your test project and retry. [12/12/2018 8:43:49 AM Informational] ========== Run test finished: 0 run (0:00:00.0469877) ========== [12/12/2018 8:47:20 AM Informational] ------ Run test started ------ [12/12/2018 8:47:21 AM Error] Unable to find F:\Projects\Foundation\Foundation.Core\Foundation.Common.Tests\bin\Debug\netcoreapp2.0\testhost.dll. Please publish your test project and retry. [12/12/2018 8:47:21 AM Error] Unable to find F:\Projects\Foundation\Foundation.Core\Foundation.Common.Tests\bin\Debug\netcoreapp2.0\testhost.dll. Please publish your test project and retry. [12/12/2018 8:47:21 AM Informational] ========== Run test finished: 0 run (0:00:00.0779985) ========== [12/12/2018 8:49:43 AM Informational] ------ Discover test started ------ [12/12/2018 8:49:44 AM Error] Microsoft.VisualStudio.TestPlatform.ObjectModel.TestPlatformException: Unable to find F:\Projects\Foundation\Foundation.Core\Foundation.Common.Tests\bin\Debug\netcoreapp2.0\testhost.dll. Please publish your test project and retry. at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Hosting.DotnetTestHostManager.GetTestHostPath(String runtimeConfigDevPath, String depsFilePath, String sourceDirectory) at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Hosting.DotnetTestHostManager.GetTestHostProcessStartInfo(IEnumerable1 sources, IDictionary2 environmentVariables, TestRunnerConnectionInfo connectionInfo) at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Client.ProxyOperationManager.SetupChannel(IEnumerable`1 sources) at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Client.ProxyDiscoveryManager.DiscoverTests(DiscoveryCriteria discoveryCriteria, ITestDiscoveryEventsHandler2 eventHandler) [12/12/2018 8:49:44 AM Warning] No test is available in F:\Projects\Foundation\Foundation.Core\Foundation.Master\bin\Debug\netstandard2.0\Foundation.Master.dll. Make sure that test discoverer & executors are registered and platform & framework version settings are appropriate and try again. [12/12/2018 8:49:45 AM Informational] ========== Discover test finished: 0 found (0:00:01.1109946) ========== [12/12/2018 8:49:45 AM Informational] ------ Run test started ------ [12/12/2018 8:49:45 AM Error] Unable to find F:\Projects\Foundation\Foundation.Core\Foundation.Common.Tests\bin\Debug\netcoreapp2.0\testhost.dll. Please publish your test project and retry. [12/12/2018 8:49:45 AM Error] Unable to find F:\Projects\Foundation\Foundation.Core\Foundation.Common.Tests\bin\Debug\netcoreapp2.0\testhost.dll. Please publish your test project and retry. [12/12/2018 8:49:45 AM Informational] ========== Run test finished: 0 run (0:00:00.0789987) ========== [12/12/2018 8:51:47 AM Informational] Executing all tests in type ‘Foundation.Tests.NetDataTests’ [12/12/2018 8:51:47 AM Informational] ------ Run test started ------ [12/12/2018 8:51:47 AM Error] Unable to find F:\Projects\Foundation\Foundation.Core\Foundation.Common.Tests\bin\Debug\netcoreapp2.0\testhost.dll. Please publish your test project and retry. [12/12/2018 8:51:47 AM Error] Unable to find F:\Projects\Foundation\Foundation.Core\Foundation.Common.Tests\bin\Debug\netcoreapp2.0\testhost.dll. Please publish your test project and retry. [12/12/2018 8:51:47 AM Informational] ========== Run test finished: 0 run (0:00:00.059002) ==========

Dependencies

<PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.7.2" />
<PackageReference Include="MSTest.TestAdapter" Version="1.3.1" />
<PackageReference Include="MSTest.TestFramework" Version="1.3.1" />

Environment

Windows, netcoreapp2.0

About this issue

Original URL
State: closed
Created 6 years ago
Comments: 18 (2 by maintainers)

Commits related to this issue

[UnitTests] Add packageReference to Microsoft.NET.Test.SDK See https://github.com/Microsoft/vstest/issues/1870 — committed to Afulton11/blog-database by Afulton11 5 years ago
First test running with help from: https://github.com/Microsoft/vstest/issues/1870 https://andrewlock.net/fixing-the-error-program-has-more-than-one-entry-point-defined-for-console-apps-containing-xun... — committed to carlbjorknas/TheRayTracerChallenge by deleted user 5 years ago

Most upvoted comments

Well I figured out my problem by comparing a working project with a non-working project. Apparently the VS and dotnet CLI test runners require that my test projects depend on the Microsoft.NET.Test.SDK NuGet package.

+87

carlin-q-scott on Jan 7, 2019

Solution is to install the Microsoft.NET.Test.Sdk:

Tools>Nuget Package Manager>Manage Nuget Packages For Solution…>Search for Microsoft.NET.Test.Sdk and install for your test project.

+41

antgustech on Jan 8, 2019

I was able to run NUnit wcf test using VS Test Explorer with nuget package references like below:

<PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.0.1" />
<PackageReference Include="NUnit" Version="3.11.0" />
<PackageReference Include="NUnit3TestAdapter" Version="3.13.0" />

I had no Microsoft.NET.Test.Sdk reference before found this issue

+17

oleksabor on Mar 11, 2019

Exactly the same issue. To solve the problem, I had to install NunitTestAdapter and Microsoft.NET.Test.Sdk. Adding just one of them did not solve the problem. Adding NuintConsoleRunner had no impact on my problem.

AndiKleini on Nov 13, 2019

Perhaps NUnit3TestAdapter should add Microsoft.NET.Test.Sdk as a dependency? Seriously, spent a good while on such a waste of bytes of a problem…

RedSpiderMkV on Mar 22, 2020

I had a different cause, beside the ones mentioned above. The testproject was created as a console application instead of a class library. Wasn’t a problem until an upgrade to .Net core 3.1

Gert-Jan-Vernooij on Mar 4, 2020

Exactly the same issue. To solve the problem, I had to install NunitTestAdapter and Microsoft.NET.Test.Sdk. Adding just one of them did not solve the problem.

chandan11a on Feb 24, 2020

I had the same issue even with the following installed:

<PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.0.1" />
<PackageReference Include="NUnit" Version="3.11.0" />
<PackageReference Include="NUnit3TestAdapter" Version="3.13.0" />

I was running from the bin folder but for some reason the Microsoft test DLLs were not being output to the bin folder. My solution was to publish the project and run dotnet vstest from the publish folder. Then it worked!

m17kea on Mar 6, 2020

Had the same issue. I already had the nunit and NUnit3TestAdapter packages. The fix for me was to also add the NUnit.ConsoleRunner package. I think it’s because I was trying to run within the Visual Studio Test Explorer.

scottblasingame on Jan 21, 2019