Visual Studio 15.8.1 not running MS unit tests

Question

When I updated Visual Studio to the latest version, 1 of my test projects stopped running tests and outputted this message:

Test project {} does not reference any .NET NuGet adapter. Test discovery or execution might not work for this project. It is recommended to reference NuGet test adapters in each test project in the solution.

UPDATED: I was using MS Test as opposed to any other test frameworks like Nunit or Xunit.

score 62 · Accepted Answer · answered Aug 22 '18 at 13:20

62

I had to add the following Nuget packages:

MSTest.TestAdapter
MSTest.TestFramework
Microsoft.NET.Test.Sdk

Visual Studio release notes

answered Aug 22 '18 at 13:20

csharpsql

2,190
1
19
24

2

this worked for me but I had to restart VS as per @user5611634 answer – Żubrówka Oct 02 '19 at 13:54
I also changed from .netstandard2.0 to .netcore3.x as Target framework – Florin Vîrdol Apr 18 '22 at 20:58

score 53 · Answer 2 · answered Aug 30 '18 at 13:54

53

Ok, you can add Nuget packages as asked. But you can also try to disable the following setting (Tools->Options->Test): "For improved performance, only use test adapters in test assembly folder or as specified in runsettings file".

Let me know if it works for you.

answered Aug 30 '18 at 13:54

Bennie Tamir

806
7
8

1

Installing the packages did not work, but changing that test setting did. Thanks. – Emperor Eto Nov 08 '18 at 15:47
3

This worked for me. I think it should be integrated in the accepted answer, because it provides the easier solution and the decision between best performance or the easiest solution is up for the user. – Linas Nov 29 '18 at 08:27
1

Why stackoverflow shows this answer after all the wrong ones? I lost 10 minutes installing nuget pkg I don't need – Patrick from NDepend team May 23 '19 at 10:31
5

I cant find this setting. VS2022 – Frank Nov 23 '21 at 18:40

score 32 · Answer 3 · answered Nov 19 '18 at 03:59

32

If you are using MS Test, try installing

MSTest.TestAdapter via nuget or

if you are using nunit, install

NUnit3TestAdapterlatest versions via nuget.

After installing please restart the visual studio and then you can see the tests running.

answered Nov 19 '18 at 03:59

user5611634

437
4
3

1

_After installing please restart the visual studio and then you can see the tests running_ - Thanks for this important info. I was puzzled why my addition of the nuget packages was not working but the restart is required. – flobadob Mar 05 '19 at 16:28
Restarting is really the key! – Veysel Ozdemir Mar 07 '19 at 16:07
Installed this package, restarted VS, still the same issue. Had to install `Microsoft.NET.Test.Sdk` as well as per the accepted answer. – Roman Starkov Mar 20 '19 at 12:19
1

For xUnit projects I had to install the xunit.runner.visualstudio nuget package for my test project. – tig Mar 31 '20 at 21:29

score 27 · Answer 4 · answered Oct 20 '18 at 09:35

27

I had the same issue and none of the answers above worked. Installing NUnit3TestAdapter V3.10.0 fixed it.

answered Oct 20 '18 at 09:35

Claudiu A

587
1
6
14

4

This was the only answer which worked for my project - I was using Nunit 3 tests rather than MSTest. – Anya Hope Jan 25 '19 at 10:47
3

This worked for me too. You are correct - you need to install the test adapter or the tests will not run. Thanks. – BoredBsee Feb 27 '19 at 20:36
I added the latest version. – Greg Z. Nov 24 '20 at 18:48
Latest versions didn't work for me. Installed versions 3.10.0 for both worked for me. So thanks! – Crispy Dec 18 '20 at 04:42

score 14 · Answer 5 · answered Oct 13 '18 at 13:49

14

I had a very similar issue recently with xUnit, the same outcome, however my fix was due to the fact that previously with lower versions of Microsoft.NET.Test.Sdk you didn't need XUnit.Runner.VisualStudio explicitly installed.

When I updated my Microsoft.NET.Test.Sdk to version 15.9.0 it stopped allowing tests to run until I installed the XUnit.Runner.VisualStudio Nuget.

Now, This may seem blatantly obvious, but, previously it would cope without it and still work. Now, it does not. The same will probably be true of other test platforms. It worked for me.

answered Oct 13 '18 at 13:49

Joe Walters

641
6
7

same for my project using xUnit – J King Jan 31 '21 at 06:50
I had to install `xunit.runner.utility` on Rider. – Hossein Ebrahimi Mar 04 '23 at 13:03

score 1 · Answer 6 · edited Nov 05 '18 at 05:46

1

My reputation score does not currently allow me to add this as a comment to the accepted answer. For reference, I've appended version numbers to the nuget packages referenced in csharpsql's answer:

MSTest.TestAdapter v1.3.2
MSTest.TestFramework v1.3.2
Microsoft.NET.Test.Sdk v15.9.0

edited Nov 05 '18 at 05:46

MrMister

2,456
21
31

answered Nov 04 '18 at 22:39

Orion

215
2
7

score 0 · Answer 7 · answered Nov 16 '18 at 06:13

0

I know that it is stupid, but for me nothing from earlier answers were working. After that I just restart my computer and everything is working correctly :) (My proble was that one day everything was working correctly and next day it stopped working)

answered Nov 16 '18 at 06:13

darson1991

406
6
18

score 0 · Answer 8 · answered Jun 25 '19 at 00:50

0

For me I felt very foolish after spending hours, trying EVERYTHING, only to find that I had simply forgotten to add the [TestMethod] directive on the unit test method.

answered Jun 25 '19 at 00:50

Badajoz95

394
4
6

score 0 · Answer 9 · answered Oct 14 '20 at 16:18

0

I was trying to run an existing project. I had the .NET Core SDK 3.3 installed, but did not have 2.1 installed. This was causing the tests to silently fail.

answered Oct 14 '20 at 16:18

Brian Davis

745
1
11
14

score 0 · Answer 10 · answered Nov 04 '21 at 20:38

I ran into this problem too (in VS 2019), which can be found all over the web. I also support @csharpsql's simple solution. I also couldn't directly comment (how annoying Stack Overflow!)

I had used 'Remove unused references' in VS. I did have to restart VS to get the references removed from view. Cleaning and rebuilding posed no problem.

But running all tests from the Test Explorer reported 'Not run' on all tests, without any explanation or error message. Very annoying.

After finding the suggestion here I started experimenting with re-adding the latest versions of those 3 references. That solved my problem. I just remains annoying this unnecessary problem occurs!

score -2 · Answer 11 · edited Nov 13 '18 at 14:43

-2

Since its just a checkbox, Ive tried disabling the following setting before anything else, and it worked!

Tools -> Options -> Test -> "For improved performance, only use test adapters in test assembly folder or as specified in runsettings file"

edited Nov 13 '18 at 14:43

Tân

1
15
56
102

answered Nov 13 '18 at 14:39

Fernando Nast

13
1

1

Same as Bennie's answer – reggaeguitar Apr 26 '19 at 16:31

score -4 · Answer 12 · edited Oct 09 '18 at 01:16

-4

Adding NuGet packages doesn't work for me.

Disable the following setting (Tools->Options->Test): "For improved performance, only use test adapters in test assembly folder or as specified in runsettings file" works.

edited Oct 09 '18 at 01:16

Stephen Rauch

47,830
31
106
135

answered Oct 09 '18 at 00:59

Julia Wang

1

1

Same as Bennie's answer – reggaeguitar Apr 26 '19 at 16:32

Visual Studio 15.8.1 not running MS unit tests

12 Answers12

Linked