Add managed server profiles and account login

dotnet/tests/VoiceCat.Tests/ServerProfileTests.cs

@@ -0,0 +1,50 @@
+using VoiceCat.Core;
+
+namespace VoiceCat.Tests;
+
+public sealed class ServerProfileTests
+{
+    [Fact]
+    public void ProfilesRoundTripWithoutPasswordMaterial()
+    {
+        string directory = Path.Combine(Path.GetTempPath(), "voicecat-profile-" + Guid.NewGuid().ToString("N"));
+        string path = Path.Combine(directory, "servers.json");
+        try
+        {
+            var guest = ServerProfile.Create(" voice.example ", 8384, ServerAuthentication.Guest, nickname: " Cat ");
+            var account = ServerProfile.Create("secure.example", 9443, ServerAuthentication.Account, username: " talon ");
+            var store = new ServerProfileStore(path);
+            store.Save([guest, account]);
+
+            Assert.Equal([guest, account], store.Load());
+            string json = File.ReadAllText(path);
+            Assert.Contains("\"authentication\": \"Account\"", json);
+            Assert.DoesNotContain("password", json, StringComparison.OrdinalIgnoreCase);
+        }
+        finally { if (Directory.Exists(directory)) Directory.Delete(directory, true); }
+    }
+
+    [Fact]
+    public void MissingCorruptAndInvalidProfilesDoNotBreakStartup()
+    {
+        string directory = Path.Combine(Path.GetTempPath(), "voicecat-profile-" + Guid.NewGuid().ToString("N"));
+        string path = Path.Combine(directory, "servers.json");
+        try
+        {
+            var store = new ServerProfileStore(path);
+            Assert.Empty(store.Load());
+            Directory.CreateDirectory(directory);
+            File.WriteAllText(path, "not json");
+            Assert.Empty(store.Load());
+            File.WriteAllText(path, "[{\"id\":\"00000000-0000-0000-0000-000000000000\",\"host\":\"\",\"port\":0,\"authentication\":\"Guest\"}]");
+            Assert.Empty(store.Load());
+        }
+        finally { if (Directory.Exists(directory)) Directory.Delete(directory, true); }
+    }
+
+    [Fact]
+    public void AccountProfilesRequireAUsername()
+    {
+        Assert.Throws<ArgumentException>(() => ServerProfile.Create("voice.example", 8384, ServerAuthentication.Account));
+    }
+}