Upgraded to .NET 10 (#1147)

app/Tests/Tools/AppAccess/WebRootFilesTests.cs

@@ -1,3 +1,6 @@
+using System.Runtime.CompilerServices;
+using System.Text.RegularExpressions;
+
 using AIStudio.Assistants.ERI;
 using AIStudio.Tools;
 
@@ -6,12 +9,15 @@ using Changelog = AIStudio.Components.Changelog;
 namespace AIStudio.Tests.Tools.AppAccess;
 
 /// <summary>
-/// Checks that the app reads the files below wwwroot which it shows itself.
+/// Checks that the app reads the files below wwwroot which it shows itself, and that the release
+/// can serve every file which the page of the app loads.
 /// </summary>
 /// <remarks>
 /// The changelogs and the ERI specifications come from the files embedded into the app, not from a
 /// request to its own server. A file which is missing there would leave the changelog or the ERI
-/// assistant empty without any error.
+/// assistant empty without any error. The release serves its static files from the same embedded
+/// files; one which is missing there leaves the window without styles, or without any interaction
+/// at all, while a debug build keeps working.
 /// </remarks>
 [TestFixture]
 public sealed class WebRootFilesTests
@@ -20,6 +26,30 @@ public sealed class WebRootFilesTests
 
     private static IEnumerable<ERIVersion> SpecificationVersions() => Enum.GetValues<ERIVersion>().Where(version => version.WasSpecificationSelected());
 
+    private static string ReadAppPageSource([CallerFilePath] string sourceFilePath = "") => File.ReadAllText(Path.Combine(Path.GetDirectoryName(sourceFilePath)!, "..", "..", "..", "MindWork AI Studio", "App.razor"));
+
+    /// <summary>
+    /// Reads the scripts and style sheets which App.razor loads from the app itself, so that a new one
+    /// is checked without anybody having to add it to a test.
+    /// </summary>
+    private static IEnumerable<string> FilesOfTheAppPage() => Regex.Matches(ReadAppPageSource(), @"<(?:script|link)\b[^>]*\b(?:src|href)=""(?<path>[^""]+)""")
+        .Select(match => match.Groups["path"].Value)
+        .Where(path => !path.Contains("//", StringComparison.Ordinal));
+
+    [Test]
+    public void TheAppPageLoadsFilesOfTheApp()
+    {
+        Assert.That(FilesOfTheAppPage(), Does.Contain("_framework/blazor.web.js").And.Contain("app.css"), "The test no longer finds the scripts and style sheets in App.razor.");
+    }
+
+    [TestCaseSource(nameof(FilesOfTheAppPage))]
+    public void EveryFileOfTheAppPageIsEmbedded(string path)
+    {
+        var file = new WebRootFiles().FileProvider.GetFileInfo(path);
+        Assert.That(file.Exists, Is.True, $"The release would not serve '{path}', since it is not among the embedded files.");
+        Assert.That(file.Length, Is.GreaterThan(0), $"The release would serve '{path}' as an empty file.");
+    }
+
     [TestCaseSource(nameof(ChangelogFiles))]
     public async Task EveryChangelogCanBeRead(string filename)
     {
@@ -64,10 +94,10 @@ public sealed class WebRootFilesTests
 
         var copied = await new WebRootFiles().CopyToAsync("specs/eri/does-not-exist.json", destinationPath);
 
-        Assert.Multiple(() =>
+        using (Assert.EnterMultipleScope())
         {
             Assert.That(copied, Is.False);
             Assert.That(File.Exists(destinationPath), Is.False);
-        });
+        }
     }
 }