Add route smoke tests

Elternbeirat.Web.Tests/Elternbeirat.Web.Tests.csproj

@@ -0,0 +1,26 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="6.0.4" />
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="10.0.12" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
+    <PackageReference Include="xunit" Version="2.9.3" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.4" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="Xunit" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Elternbeirat.Web\Elternbeirat.Web.csproj" />
+  </ItemGroup>
+
+</Project>

Elternbeirat.Web.Tests/RouteSmokeTests.cs

@@ -0,0 +1,65 @@
+using System.Net;
+using Microsoft.AspNetCore.Mvc.Testing;
+
+namespace Elternbeirat.Web.Tests;
+
+/// <summary>
+/// Smoke tests: every known route must return 200, unknown routes must return
+/// 404. This catches broken content files, renamed slugs or routing regressions
+/// before a deploy.
+/// </summary>
+public sealed class RouteSmokeTests : IClassFixture<WebApplicationFactory<Program>>
+{
+    private readonly WebApplicationFactory<Program> _factory;
+
+    public RouteSmokeTests(WebApplicationFactory<Program> factory)
+    {
+        _factory = factory;
+    }
+
+    /// <summary>
+    /// Every route that a visitor can reach through the navigation, the FAQ hub
+    /// or the news section.
+    /// </summary>
+    public static TheoryData<string> KnownRoutes =>
+    [
+        "/",
+        "/vorstandsteam",
+        "/foerderverein",
+        "/faq",
+        "/faq-mensa",
+        "/faq-schliessfach",
+        "/faq-elterneuro",
+        "/faq-elternarbeit",
+        "/downloads",
+        "/kontakt",
+        "/impressum",
+        "/datenschutz",
+        "/beitraege",
+        "/beitraege/neuer-vorstand-gewaehlt",
+        "/beitraege/neue-sporthalle-eroeffnet",
+    ];
+
+    [Theory]
+    [MemberData(nameof(KnownRoutes))]
+    public async Task Known_route_returns_200(string route)
+    {
+        var client = _factory.CreateClient();
+
+        var response = await client.GetAsync(route);
+
+        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
+    }
+
+    [Theory]
+    [InlineData("/gibt-es-nicht")]
+    [InlineData("/beitraege/gibt-es-nicht")]
+    public async Task Unknown_route_returns_404(string route)
+    {
+        var client = _factory.CreateClient();
+
+        var response = await client.GetAsync(route);
+
+        Assert.Equal(HttpStatusCode.NotFound, response.StatusCode);
+    }
+}

Elternbeirat.Web/Elternbeirat.Web.csproj

@@ -7,6 +7,12 @@
         <BlazorDisableThrowNavigationException>true</BlazorDisableThrowNavigationException>
     </PropertyGroup>
 
+    <!-- The test project uses WebApplicationFactory<Program>, which needs the
+         auto-generated Program class (internal with top-level statements). -->
+    <ItemGroup>
+        <InternalsVisibleTo Include="Elternbeirat.Web.Tests" />
+    </ItemGroup>
+
     <ItemGroup>
         <PackageReference Include="Markdig" Version="0.38.0" />
     </ItemGroup>

Elternbeirat.slnx

@@ -1,3 +1,4 @@
 <Solution>
   <Project Path="Elternbeirat.Web/Elternbeirat.Web.csproj" />
+  <Project Path="Elternbeirat.Web.Tests/Elternbeirat.Web.Tests.csproj" />
 </Solution>