When I'm updating my existing unit tests, Visual Studio code drops a status bar from the top letting me know that it could not correctly discover unit tests every time I save the file. This is expected since I'm actively typing so everything is not working python.
Have I configured something incorrectly? Is there some way to tell visual studio to chill out on the unit test discovery?
Of course, I can simply hit the "close" button, but this is extremely distracting.
Disable Live Unit Test running on the background.
Under Test->Test Settings-> uncheck 'Keep Test Execution Engine Running'. I am using VS 2017 & VS 2015.
I am developing a project which started life as an ASP.Net Core MVC SPA Template in Visual Studio 2015. I used the Visual Studio Karma Test Adapter with no problems for my Angular (Typescript) unit testing, but no matter what I tried I could not get NUnit to recognise my C# unit tests for the Web API and early Domain Model code. I tried to add a separate Test Project with no success and I also created unit test files within the same, single, project with no success.
At some point I knew I should migrate the code to Visual Studio 2017, as I feel that the new IDE will prove to be beneficial as the project develops, so I thought I would do it now and see if it solves my unit testing problems. Visual Studio's migration process didn't go well so I decided to start from scratch again.
I ran dotnet new angular to create a clean solution which I opened in VS 2017. It appears that the Visual Studio Karma Test Adapter does not work with VS 2017 yet, so for the Typescript (Jasmine) testing that left me with Chutzpah. No matter what I try I cannot write the simplest of Jasmine tests and have the Visual Studio Test Explorer recognise it (let alone run the test). I haven't even begun to look at the C# Unit Testing yet.
Can anyone else get a Jasmine Unit Test to be recognised and run in the VS Test Explorer from a clean dotnet new angular solution, I would be very grateful for some advise.
first of all, I've never used unit tests with ReSharper before, so I don't know how to debug it. The problem is that if run MS unit tests by VS test explorer everything works fine, but if I run it through resharper's Unit Test Sessions it just does nothing and stays in a pending state, even with just one test starting with Assert.Fail. I am seeing no load on CPU or anything.
I am using ReSharper 8.0.14.856 with Visual Studio 11.0.50727.1 . Searches bring me many results with older versions, but I guess those should work fine?
As I see you use VS2012 RTM, but according to http://www.jetbrains.com/resharper/download/index.html -> "System requirements", you need to have at least Visual Studio 2012 Update 3 (there were some changes in MSTest API between RTM and Update 3, ReSharper 8 supports the latest ones). So, please install Update 3 to your VS2012 installation and you will be able to run MSTest tests.
I have a xUnit.net Test as follows:
static class MyTestClass
{
[Fact]
static void MyTestMethod()
{
}
}
The xUnit plugin for VS 2012 says:
No tests found to run.
TestDriven.net runs it fine but mentions something about Ad hoc:
1 passed, 0 failed, 0 skipped (see 'Task List'), took 0.47 seconds (Ad hoc)
TeamCity, xunit.gui.exe and xunit.console.exe and Visual Studio also can't find TestMethod
(I've got xunit.runner.visualstudio installed and VS is seeing some tests.)
What gives?
TL;DR your Test Classes must be public (but your Test Methods can be private and/or static)
For reasons of efficiency, the xUnit authors have opted to not use BindingFlags.NonPublic when searching for Test Classes in the runner (the MSIL metadata tables don't index private(/internal) classes to the same degree hence there is a significant performance difference in the relative efficiency that Reflection can thus achieve).
As a result of the above, the fact that your class is private means it doesn't get picked up.
The fact that the Test Method is private and static is fine - xUnit by design since 1.0 has supported both those aspects.
Note that the Visual Studio xUnit Runner extension, xunit.console.exe (and the GUI), the xunit MSBuild task, Resharper and CodeRush are all consistent in honouring this (although arguably they [especially the latter two] could do more to flag when a Test Class (i.e. class [potentially indirectly] containing Fact-derived annoations) is private).
The reason TestDriven.net runs your test is that the Author of TestDriven.net has put great effort into making it Just Work. It internally uses a special Test Runner wrapper/shim (termed the Adhoc Runner) to run your test. Be aware that the method is actually not being run via the xUnit.net runner and hence any attributes you put on your test that have side effects will not be triggered.
Notably NUnit (and I'm pretty sure MSTest) do use private reflection [and hence pick up tests in private classes] which is probably why it never seemed an important thing for you to worry about before.
Note: A side effect / trick enabled by this is that you can make a Test Class private as a quick way of Skipping all tests in a Test Class [and any nested classes]. (Sadly the cases on this planet of this being used unintentionally vastly outnumber the intentional cases of this though!)
This answer is for VS 2013, but the steps are essentially the same for VS 2012. This applies for running via ReSharper's unit test functionality.
Install the xUnit.net runner for Visual Studio 2013 (be careful running Visual Studio as an Administrator, or the tests may not run when running the IDE as a non-Admin):
a. From within Visual Studio 2013, go to Tools -> Extensions and Updates -> Online
b. Search for xUnit.net runner for Visual Studio 2012 and 2013
c. Then download (install) it. If upgrading to VS 2013 from VS 2012, it is suggested that this be uninstalled, and then re-installed.
d. Restart Visual Studio.
If ReSharper is installed, install the xUnit.net test runner plugin :
(NOTE: Since ReSharper 2016.1, xunit support is built in to ReSharper, meaning the xunit plugin is no longer required.)
a. In Visual Studio 2013, Navigate: Resharper -> Extension Manager.
b. On the left, select Online.
c. Search for “xunit.net”. Select the “xUnit.net Test Support”. Click Install.
d. Restart Visual Studio 2013.
“Clean” the solution
a. In the IDE, in Solution Explorer, right-click the solution, and choose “Clean”.
b. Re-compile.
c. Now, when right-clicking a [Fact] attribute, select Resharper’s “Run Unit Tests” (as opposed to the default “Run Tests”)
Troubleshooting running with XUnit:
If problems running the [Fact] tests with XUnit persist, it might
be necessary to manually remove the xUnit package from any/all of the
following folders (review content for the xunit DLLs, then delete
xUnit folder if found):
C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\Extensions\
C:\Users\<username>\AppData\Local\Microsoft\VisualStudio\12.0\Extensions\
As for ReSharper, try un-installing and re-installing the
xunitcontrib library (xUnit.net Test Support). I have noticed once
when un-installing, some error messages flashing past. I grabbed a
screen-shot at one point, and it listed:
Access to the path
C:\Users\<username>\AppData\Local\JetBrains\ReSharper\vAny\packages\xunitcontrib.1.3.0\ReSharper\v8.1\plugins\xunit.dll
is denied.
... and the same for the other DLLs in that directory
To resolve this, delete the C:\Users\<username>\AppData\Local\JetBrains\ReSharper\vAny\packages\xunitcontrib.1.3.0\ directory after uninstalling from Visual Studio, then run Visual Studio as a non-administrator, and re-install via ReSharper (Resharper -> Extension Manager)
From http://xunit.github.io/docs/getting-started-desktop.html#run-tests-visualstudio:
If you're having problems discovering or running tests, you may be a
victim of a corrupted runner cache inside Visual Studio. To clear this
cache, shut down all instances of Visual Studio, then delete the
folder %TEMP%\VisualStudioTestExplorerExtensions. Also make sure your
project is only linked against a single version of the Visual Studio
runner NuGet package (xunit.runner.visualstudio).
I had the same issue in VS2017 RC, .NET core 1.1 project. Updating xunit.runner worked for me,
Install-Package xunit.runner.visualstudio
(As referred to by #Kyle in the comments on the other answer) The same No tests found to run message can result from using NuGet to get xUnit.dll and ending up with version 2.0.0 (which is currently marked as prerelease as some core functionality like discovering of v1 tests etc. has yet to be implemented in that branch).
The resolution in this case is to select Stable Only versions (as opposed to Include Prerelease) in the NuGet package manager.
I've been having this issue with .NET Core for a while now where a test class or a test method is not being discovered. The following fix works for me:
Open a command prompt window.
Change to the project directory.
Build the project running the following command:
dotnet build
NOTE: Building from Visual Studio.NET will not work! <<<<<<<<<<< IMPORTANT!
Run the tests: Test --> Run --> Test All - CTRL+R +A (this will discover the new test(s) - but not run the the new test(s).
Run the tests again.
In my case, in order to see any tests, I had to complete the following steps:
(All installed through NuGet Package Manager)
Install xUnit v2.0.50727
Install xUnit.extensions v2.0.50727
Navigate to the following link and follow the steps outlined in the documentation: http://xunit.github.io/docs/running-tests-in-vs.html
I'm using Visual Studio 2013 Premium. (Resharper NOT installed)
For me, the combination of my test class and test method names were too long; xUnit appears to have some cap on this combination.
Shortening the name of just the test method allowed xUnit to discover that single test. Shortening the name of the entire class allowed xUnit to discover all tests in the class.
Threshold of class name + method name appears to be 172 characters.
My problem was that I updated xunit.runner.visualstudio to version 2.4.5. However, the project I am working for, is for .NET Standard 2.0. Therefore, I had to downgrade to version 2.4.3 of xunit.runner.visualstudio, since it supports ".NET 2.0 or later". But since version 2.4.4, ".NET Core 3.1 or later" is supported.
I'm having a problem when a project is committed to SVN, which in turn is automatically picked up by our newly set-up CruiseControl.NET server, the UnitTests are failing.
The unit tests are written in the default Visual Studio Unit test framework - which is the problem. I spot that nUnit appears to be recommended as a good alternative. However, that doesn't change my current predicament - I would like a working build without having to re-write every single one of my Unit Tests in the nUnit Framework (Would converting a MS Unit Test project take any considerable amount of time - it looks the same to me?)
What is the best way for me to proceed now? We are unable to install Visual Studio on the box and our IT department won't allow us access to go fiddling in the registry.
I am not sure how to run unit tests without Visual Studio, but I had moved to NUnit from MSTests and its reasonably easy - as long as you don't use the test context from MSTest(can't remember the real name), all you have to do is to rename the tags [TestClass] -> [TestFixture], etc (there is always 1-1 mapping) and change the usings. Running NUnit tests on the build machine is trivial.
Also you can try to convince your company to buy you a copy of Resharper (preferred), or TestDriven.NET - so you can easily run NUnit tests from Visual Studio.