With the dotnet version 1.0.0, you have to use the --filter option:

You can filter by DisplayName, FullyQualifiedName and Traits.

Ex:

    dotnet test --filter &quot;FullyQualifiedName=YourNamespace.TestClass1.Test1&quot;

Also, these operators are allowed: =, != and ~ (contains).

More info here: [docs][1]


  [1]: https://github.com/Microsoft/vstest-docs/blob/master/docs/filter.md

Since this question is tagged with **xUnit**, the command for the dotnet xUnit CLI command is as follows:

    dotnet xunit -method FullyQualifiedName

Ran into a mysterious problem when trying to make a @BindingConversion for int to string.  
The following code **works for floats to strings**:

xml:

    ...
    &lt;variable
            name=&quot;myViewModel&quot;
            type=&quot;... .SomeModel&quot; /&gt;
    ...
    &lt;TextView
                style=&quot;@style/StyleStuff&quot;
                android:text=&quot;@{myViewModel.number}&quot; /&gt;

code:

    public class SomeModel {
        public ObservableFloat number = new ObservableFloat();
    }

and setting:

    viewModel.number.set(3.14f);


---
But if I try the same thing for **ints to strings** I get a crash.

     public ObservableInt number = new ObservableInt();

with

    viewModel.number.set(42);

I get the following:

    FATAL EXCEPTION: main
    Process: ...myapplication, PID: 14311
    android.content.res.Resources$NotFoundException: String resource ID #0xfa0
        at android.content.res.Resources.getText(Resources.java:1123)
        at android.support.v7.widget.ResourcesWrapper.getText(ResourcesWrapper.java:52)
        at android.widget.TextView.setText(TextView.java:4816)
        at ...executeBindings(ActivityAdaptersBinding.java:336)
        at android.databinding.ViewDataBinding.executePendingBindings(ViewDataBinding.java:355)

---
Any ideas?
Thanks!

Android Data Binding @BindingConversion failure for int to string

I want my default active profile to be `production` if `-Dspring.profiles.active` is not set.

I tried the following in my `application.properties` but it did&#39;t work:

    spring.profiles.default=production

Spring-boot version = 1.3.5.RELEASE

Setting the default active profile in Spring-boot

I have a large test suite in a .NET Core project. I can use the Test Explorer window to select a few tests to run.

I can also run the **whole** test suite on the command line with `dotnet test`. Is there a way to run only one (or a few) tests on the command line?

How do I run specific tests using dotnet test?

I have a large test suite in a .NET Core project. I can use the Test Explorer window to select a few tests to run.
I can also run the whole test suite on the command line with <code>dotnet test</code>. Is there a way to run only one (or a few) tests on the command line?

I have an ASP.NET MVC Core application that I am writing unit tests for. One of the action methods uses User name for some functionality:

    SettingsViewModel svm = _context.MySettings(User.Identity.Name);

which obviously fails in the unit test. I looked around and all suggestions are from .NET 4.5 to mock HttpContext. I am sure there is a better way to do that. I tried to inject IPrincipal, but it threw an error; and I even tried this (out of desperation, I suppose):

    public IActionResult Index(IPrincipal principal = null) {
        IPrincipal user = principal ?? User;
        SettingsViewModel svm = _context.MySettings(user.Identity.Name);
        return View(svm);
    }

but this threw an error as well.
Couldn&#39;t find anything in the docs either...

Mocking IPrincipal in ASP.NET Core

So I have a test like the following:

    	[Fact]
		public void Test1()
		{
			Assert.ThrowsAsync&lt;ArgumentNullException&gt;(() =&gt; MethodThatThrows());
		}

		private async Task MethodThatThrows()
		{
			await Task.Delay(100);
			throw new NotImplementedException();
		}

To my surprise, Test1 passes successfully. To make it fail I have to write like this:

    Assert.Throws&lt;ArgumentNullException&gt;(() =&gt; MethodThatThrows().Wait());

What is the purpose of ThrowsAsync(), if it does not work in the scenario above?

xunit Assert.ThrowsAsync() does not work properly?

The latest version of VS Code already provides an easy way of running a single test as pointed on [Tyler Long&#39;s answer](https://stackoverflow.com/a/38372628/1140754) to the question [Debugging xunit tests in .NET Core and Visual Studio Code](https://stackoverflow.com/q/38146011/1140754).

However, I am looking how can I run **all tests** contained in a test suite class in VS Code (without debug)? 

The only way I found was adding to `launch.json` a specific configuration as the following one, but which I can only run in debug (I would like to run it without debug):

&lt;!-- language: lang-json --&gt;

    {
      &quot;name&quot;: &quot;.NET Core Xunit tests&quot;,
      &quot;type&quot;: &quot;coreclr&quot;,
      &quot;request&quot;: &quot;launch&quot;,
      &quot;preLaunchTask&quot;: &quot;build&quot;,
      &quot;program&quot;: &quot;/usr/local/share/dotnet/dotnet&quot;,
      &quot;args&quot;: [&quot;test&quot;],
      &quot;cwd&quot;: &quot;${workspaceRoot}/test/MyProject.Tests&quot;,
      &quot;externalConsole&quot;: false,
      &quot;stopAtEntry&quot;: false,
      &quot;internalConsoleOptions&quot;: &quot;openOnSessionStart&quot;
    }



How to run all tests in Visual Studio Code

If I set environment variables for a .Net Core web project in Visual Studio 2017 using the project properties page, I can read the value of the variable using `Environment.GetEnvironmentVariable`; however, when I set the environment variable for my xUnit testing project and then debug the test, `Environment.GetEnvironmentVariable` always returns null.  Is there something about the fact that it is a testing project that should prevent the variable from being used the same as with the web project?  If so, is there a way that I can set the environment variables for a test project?  Thank you.

Should GetEnvironmentVariable Work in xUnit Test?

I have in my test suite a test that goes something like this:

    [Fact]
    public void VerifySomeStuff()
    {
        var stuffCollection = GetSomeStuff();

        Assert.Equal(1, stuffCollection.Count());
    }

This test works as I expect, but when I run it xUnit prints a warning:

&gt; warning xUnit2013: Do not use Assert.Equal() to check for collection size.

However, no alternative is suggested in the warning, and a google search takes me to the source code in xUnit for the test that verifies this warning is printed.

If `Assert.Equal()` isn&#39;t the correct way to verify the length of a collection, what is?

---

To clarify: I realize that I could &quot;trick&quot; xUnit into not emitting this warning by e.g. extracting a variable or using `Assert.True(stuff.Count() == 1)` instead. The latter is just hacky, and the former feels like if xUnit is e.g. trying to avoid multiple iterations of an `IEnumerable&lt;T&gt;`, then this is the wrong way to go (because I&#39;ll get compiler hints about that separately if it&#39;s an issue), and xUnit itself should never have to evaluate the input more than once (in fact it probably will get the same input regardless of variable extraction, because of how C# function calling works).

So, I&#39;m not just interested in removing that warning from my output. An answer to my question also explains *why* that warning is included in the library in the first place and *why* whatever approach I should use instead is better.

What&#39;s the idiomatic way to verify collection size in xUnit?

When I issue the following command in the command line:

`dotnet publish -o &quot;./../output&quot; -c Release`

The `dotnetcli` publishes the project correctly. However, it does not copy the `appsettings.Production.json` file, only the `appsettings.json`.

Why is this? I have googled around and read the official core docs, but haven&#39;t found how the correct environment `appsettings.json` is supposed to end up in the publish output.

Should I copy `appsettings.Production.json` manually to the published folder?

dotnet publish doesn&#180;t publish correct appsettings.{env.EnvironmentName}.json

This program works just fine when compiled for .NET 4 but does not when compiled for .NET Core. I understand the error about encoding not supported but not how to fix it.

    Public Class Program
        Public Shared Function Main(ByVal args As String()) As Integer
            System.Text.Encoding.GetEncoding(1252)
        End Function
    End Class

.NET Core doesn&#39;t know about Windows 1252, how to fix?

Microsoft now has .NET Core, .NET Framework and Xamarin (Mono) in its family.

It seems to be a lot of overlap here. What&#39;s the difference between these types of .NET Platforms? When should I choose to use .NET Core in my project, instead of .NET Framework or Xamarin? 

What&#39;s the difference between .NET Core, .NET Framework, and Xamarin?

I followed the [instruction][1] to create new .NET Core project and ran this from cmd:

    dotnet new
    dotnet restore

The second statement creates `project.lock.json` that contains a lot of garbage (not really garbage but tons of dependencies, configurations etc.). I assume these dependencies is .NET framework that is broken down into separate NuGet packages. 

My questions:

 1. Is my assumption correct?
 2. Can I make my application lighter by removing not needed NuGet packages/dependencies?
 3. How?

  [1]: https://www.microsoft.com/net/core#windows

What is project.lock.json?

I have a simple .NET Core project (console app) that I&#39;m trying to compile and run. `dotnet build` succeeds, but I get the following error when I do `dotnet run`:

```none
dotnet run
Project RazorPrecompiler (.NETCoreApp,Version=v1.0) was previously compiled. Skipping compilation.
A fatal error was encountered. The library &#39;hostpolicy.dll&#39; required to execute the application was not found in [path].
```

My project.json looks like this:

    {
      &quot;buildOptions&quot;: {
        &quot;warningsAsErrors&quot;: true
      },
      &quot;dependencies&quot;: {
        &quot;Microsoft.AspNetCore.Razor&quot;: &quot;1.0.0&quot;,
        &quot;Microsoft.NETCore.App&quot;: {
          &quot;type&quot;: &quot;platform&quot;,
          &quot;version&quot;: &quot;1.0.0&quot;
        }
      },
      &quot;description&quot;: &quot;Precompiles Razor views.&quot;,
      &quot;frameworks&quot;: {
        &quot;netcoreapp1.0&quot;: {
          &quot;imports&quot;: [ ]
        }
      },
      &quot;version&quot;: &quot;1.2.0&quot;
    }

What is `hostpolicy.dll`, and why is it missing?

The library hostpolicy.dll was not found

**Context**

in XUnit github I found this: [Add Assert.Equal(expected, actual, message) overload #350][1] *(so a developer ask for a non existing overload see below)*

Quote from the answer:

&gt; We are a believer in self-documenting code; that includes your assertions.

*(so the XUnit team rejects it)*

  [1]: https://github.com/xunit/xunit/issues/350

OK, I got it. I also believe the self documenting code. Still I can not find out 
this use case:

**Sample**

    // Arrange
    // Create some external soap service client and its wrapper classes
    
    // Act
    // client.SomeMethod();

    // Assert
    // Sorry, soap service&#39;s interface, behaviour and design is *given*
    // So I have to check if there is no Error, and 
    // conveniently if there is, then I would like to see it in the assertion message

    Assert.Equal(0, client.ErrorMessage.Length); // Means no error

    // I would like to have the same result what would be the following *N*U*n*i*t* assert:
    // Assert.AreEqual(0, client.ErrorMessage.Length, client.ErrorMessage); // Means no error

**Question**

How can I implement a descriptive assert message in this case in XUnit which still has no such an overload?





Content Type	Original Author	Original Content on Stackoverflow
Question	Nate Barbettini	View Question on Stackoverflow
Solution 1 - xunit.net	andrecarlucci	View Answer on Stackoverflow
Solution 2 - xunit.net	GeorgDangl	View Answer on Stackoverflow

How do I run specific tests using dotnet test?

xunit.net Problem Overview

xunit.net Solutions

Solution 1 - xunit.net

Solution 2 - xunit.net

Setting the default active profile in Spring-boot

Android Data Binding @BindingConversion failure for int to string

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