Added profile, provider, and workspace preselection to chat templates (#1099)

Co-authored-by: Thorsten Sommer <SommerEngineering@users.noreply.github.com>

app/Tests/Tools/WorkspaceChatTemplateResolutionTests.cs

@@ -0,0 +1,100 @@
+using AIStudio.Settings;
+using AIStudio.Tools;
+
+namespace AIStudio.Tests.Tools;
+
+/// <summary>
+/// Checks how a chat finds the workspace its chat template names.
+/// </summary>
+/// <remarks>
+/// A chat template names its workspace by name, because a workspace has an ID of its own on every
+/// computer. The chat page and assistant chat launchers both go through the same method, so it has
+/// to find the workspace the user sees in the list under that name, create it only when it is
+/// missing, and never stop a chat over a name which names nothing.
+/// </remarks>
+[TestFixture]
+[NonParallelizable]
+public sealed class WorkspaceChatTemplateResolutionTests
+{
+    private const string CHAT_TEMPLATE_NAME = "Mail";
+
+    private string? previousDataDirectory;
+    private string testDirectory = string.Empty;
+
+    [SetUp]
+    public async Task PrepareDataDirectory()
+    {
+        //
+        // The data directory and the workspace cache are static state of the whole application,
+        // which is why this fixture does not run alongside others, see WorkspaceTreeCacheTests:
+        //
+        this.previousDataDirectory = SettingsManager.DataDirectory;
+        this.testDirectory = Path.Combine(Path.GetTempPath(), $"ai-studio-workspace-template-{Guid.NewGuid():N}");
+        Directory.CreateDirectory(this.testDirectory);
+        SettingsManager.DataDirectory = this.testDirectory;
+        WorkspaceBehaviour.TestDataDirectory = this.testDirectory;
+
+        await WorkspaceBehaviour.ForceReloadWorkspaceTreeAsync();
+    }
+
+    [TearDown]
+    public void RemoveDataDirectory()
+    {
+        SettingsManager.DataDirectory = this.previousDataDirectory;
+        WorkspaceBehaviour.TestDataDirectory = null;
+
+        // Whoever reads the cache next must not get the workspaces of this test:
+        WorkspaceBehaviour.InvalidateWorkspaceTreeCache();
+
+        try
+        {
+            Directory.Delete(this.testDirectory, true);
+        }
+        catch (IOException)
+        {
+            // A temporary directory we could not remove says nothing about the code under test.
+        }
+    }
+
+    [Test]
+    public async Task AnExistingWorkspaceIsFoundByItsNameWithoutSpacesInAnyCase()
+    {
+        var created = await WorkspaceBehaviour.TryCreateWorkspaceAsync("Mails");
+        Assert.That(created.Success, Is.True);
+
+        var workspaceId = await WorkspaceBehaviour.ResolveOrCreateChatTemplateWorkspaceAsync("  mails ", CHAT_TEMPLATE_NAME);
+        var snapshot = await WorkspaceBehaviour.GetOrLoadWorkspaceTreeShellAsync();
+
+        Assert.Multiple(() =>
+        {
+            Assert.That(workspaceId, Is.EqualTo(created.Workspace.WorkspaceId), "The template names the workspace the user sees in the list under that name.");
+            Assert.That(snapshot.Workspaces, Has.Count.EqualTo(1), "A second workspace of the same name would split the chats of the template.");
+        });
+    }
+
+    [Test]
+    public async Task AMissingWorkspaceIsCreated()
+    {
+        var workspaceId = await WorkspaceBehaviour.ResolveOrCreateChatTemplateWorkspaceAsync("Contracts", CHAT_TEMPLATE_NAME);
+        var snapshot = await WorkspaceBehaviour.GetOrLoadWorkspaceTreeShellAsync();
+
+        Assert.Multiple(() =>
+        {
+            Assert.That(workspaceId, Is.Not.EqualTo(Guid.Empty));
+            Assert.That(snapshot.Workspaces.Single(workspace => workspace.WorkspaceId == workspaceId).Name, Is.EqualTo("Contracts"));
+        });
+    }
+
+    [Test]
+    public async Task ANameWhichNamesNothingGivesNoWorkspace()
+    {
+        var workspaceId = await WorkspaceBehaviour.ResolveOrCreateChatTemplateWorkspaceAsync("   ", CHAT_TEMPLATE_NAME);
+        var snapshot = await WorkspaceBehaviour.GetOrLoadWorkspaceTreeShellAsync();
+
+        Assert.Multiple(() =>
+        {
+            Assert.That(workspaceId, Is.EqualTo(Guid.Empty), "The chat then starts without a workspace, as it would without the template.");
+            Assert.That(snapshot.Workspaces, Is.Empty, "A workspace without a name would only show up as an unnamed one in the list.");
+        });
+    }
+}