tests(apphost.tests): added support for end to end testing using playwright

tests/FiscalOS.AppHost.Tests/FiscalOS.AppHost.Tests.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <RootNamespace>FiscalOS.AppHost.Tests</RootNamespace>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <Content Include="xunit.runner.json" CopyToOutputDirectory="PreserveNewest" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Aspire.Hosting.Testing" />
+    <PackageReference Include="AwesomeAssertions" />
+    <PackageReference Include="Microsoft.Playwright.Xunit.v3" />
+    <PackageReference Include="Microsoft.Testing.Extensions.CodeCoverage" />
+    <PackageReference Include="Moq" />
+    <PackageReference Include="xunit.v3.mtp-v2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\src\FiscalOS.AppHost\FiscalOS.AppHost.csproj" />
+  </ItemGroup>
+
+</Project>

tests/FiscalOS.AppHost.Tests/Infra/AspireFixture.cs

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+using Aspire.Hosting;
+using Aspire.Hosting.Testing;
+
+namespace FiscalOS.AppHost.Tests.Infra;
+
+public sealed class AspireFixture : IAsyncLifetime
+{
+  private DistributedApplication _app = null!;
+
+  public async ValueTask InitializeAsync()
+  {
+    var appHost = await DistributedApplicationTestingBuilder
+        .CreateAsync<Projects.FiscalOS_AppHost>();
+
+    _app = await appHost.BuildAsync();
+
+    await _app.StartAsync();
+  }
+
+  public async ValueTask DisposeAsync()
+  {
+    await _app.StopAsync();
+    await _app.DisposeAsync();
+  }
+
+  public Uri GetBaseWebUri()
+  {
+    return _app.GetEndpoint(ProjectNames.Web, "https");
+  }
+}

tests/FiscalOS.AppHost.Tests/Infra/BaseTest.cs

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+
+
+namespace FiscalOS.AppHost.Tests.Infra;
+
+public abstract class BaseTest(
+  AspireFixture aspire,
+  PlaywrightFixture playwright
+) : IAsyncLifetime, IClassFixture<AspireFixture>, IClassFixture<PlaywrightFixture>
+{
+  protected AspireFixture AspireFixture { get; } = aspire;
+  protected PlaywrightFixture PlaywrightFixture { get; } = playwright;
+
+  protected IBrowserContext Context { get; private set; } = null!;
+  protected IPage Page { get; private set; } = null!;
+
+  public async ValueTask InitializeAsync()
+  {
+    Context = await PlaywrightFixture.Browser.NewContextAsync(new()
+    {
+      BaseURL = AspireFixture.GetBaseWebUri().ToString(),
+    });
+    Page = await Context.NewPageAsync();
+  }
+
+  public async ValueTask DisposeAsync()
+  {
+    await Page.CloseAsync();
+    await Context.CloseAsync();
+    await Context.DisposeAsync();
+
+    GC.SuppressFinalize(this);
+  }
+
+  public static ILocatorAssertions Expect(ILocator locator)
+  {
+    return Assertions.Expect(locator);
+  }
+
+  public static IPageAssertions Expect(IPage page)
+  {
+    return Assertions.Expect(page);
+  }
+
+  public static IAPIResponseAssertions Expect(IAPIResponse response)
+  {
+    return Assertions.Expect(response);
+  }
+}

tests/FiscalOS.AppHost.Tests/Infra/PlaywrightFixture.cs

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+namespace FiscalOS.AppHost.Tests.Infra;
+
+public sealed class PlaywrightFixture : IAsyncLifetime
+{
+  private IPlaywright? _playwright;
+
+  internal IBrowser Browser { get; set; } = null!;
+
+  public async ValueTask InitializeAsync()
+  {
+    _playwright = await Playwright.CreateAsync();
+
+    Browser = await _playwright.Chromium.LaunchAsync(new()
+    {
+      Headless = false,
+    });
+  }
+
+  public async ValueTask DisposeAsync()
+  {
+    await Browser.CloseAsync();
+    await Browser.DisposeAsync();
+
+    _playwright?.Dispose();
+  }
+}

tests/FiscalOS.AppHost.Tests/LoginPageTests.cs

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+namespace FiscalOS.AppHost.Tests;
+
+public class LoginPageTests(
+  AspireFixture aspire,
+  PlaywrightFixture playwright
+) : BaseTest(aspire, playwright)
+{
+  [Fact]
+  public async Task LoginPage_WhenNavigatedTo_ItShouldDisplaysLoginButton()
+  {
+    await Page.GotoAsync("/public/login");
+    await Expect(Page.GetByText("Login")).ToBeVisibleAsync();
+  }
+}

tests/FiscalOS.AppHost.Tests/Usings.cs

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+global using FiscalOS.AppHost.Tests.Infra;
+
+global using Microsoft.Playwright;
+global using Microsoft.Playwright.Xunit.v3;

tests/FiscalOS.AppHost.Tests/xunit.runner.json

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+{
+    "$schema": "https://xunit.net/schema/current/xunit.runner.schema.json"
+}