MSTest 3.4 + Playwright

1.txt

$dotnet --version      
9.0.100-preview.4.24267.66

$dotnet new list 
These templates matched your input: 

Template Name                                 Short Name                  Language    Tags                            
--------------------------------------------  --------------------------  ----------  --------------------------------
API Controller                                apicontroller               [C#]        Web/ASP.NET            
ASP.NET Core Web API (native AOT)             webapiaot                   [C#]        Web/Web API/API/Service
...  
MSTest Playwright Test Project                mstest-playwright           [C#]        Test/MSTest/Playwright          
MSTest Test Class                             mstest-class                [C#],F#,VB  Test/MSTest                     
MSTest Test Project                           mstest                      [C#],F#,VB  Test/MSTest 

$dotnet new mstest-playwright
The template "MSTest Playwright Test Project" was created successfully.

Processing post-creation actions...

Build succeeded in 20.9s
Restore succeeded.

2.txt

$dotnet test                              
Restore complete (0.3s)
You are using a preview version of .NET. See: https://aka.ms/dotnet-support-policy
  demo-mstest succeeded (0.2s) → bin/Debug/net9.0/demo-mstest.dll
  demo-mstest test succeeded (5.6s)

Test summary: total: 1, failed: 0, succeeded: 1, skipped: 0, duration: 5.2s
Build succeeded in 6.2s

demo.csproj

<Project Sdk="MSTest.Sdk/3.4">

  <PropertyGroup>
    <TargetFramework>net9.0</TargetFramework>
    <RootNamespace>demo_mstest</RootNamespace>
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>

    <EnablePlaywright>true</EnablePlaywright>
  </PropertyGroup>

  <ItemGroup>
    <Using Include="System.Text.RegularExpressions" />
    <Using Include="System.Threading.Tasks" />
    <Using Include="Microsoft.Playwright.MSTest" />
    <Using Include="Microsoft.VisualStudio.TestTools.UnitTesting" />
  </ItemGroup>

</Project>

DemoTest.cs

namespace demo_mstest;

[TestClass]
public class UnitTest1 : PageTest
{
    [TestMethod]
    public async Task HomepageHasPlaywrightInTitleAndGetStartedLinkLinkingtoTheIntroPage()
    {
        await Page.GotoAsync("https://playwright.dev");

        // Expect a title "to contain" a substring.
        await Expect(Page).ToHaveTitleAsync(new Regex("Playwright"));

        // create a locator
        var getStarted = Page.Locator("text=Get Started");

        // Expect an attribute "to be strictly equal" to the value.
        await Expect(getStarted).ToHaveAttributeAsync("href", "/docs/intro");

        // Click the get started link.
        await getStarted.ClickAsync();

        // Expects the URL to contain intro.
        await Expect(Page).ToHaveURLAsync(new Regex(".*intro"));
    }
}