Social bar v2: fediverse icons resolved via nodeinfo (with redirect-following), persisted software column, icon colors — 112 tests passing, 0 warnings

ytLive.Tests/SocialValidatorTests.cs

@@ -0,0 +1,208 @@
+using System;
+using System.Net;
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+using Xunit;
+using ytLive.Models;
+using ytLive.Services;
+
+namespace ytLive.Tests;
+
+public class SocialValidatorTests
+{
+    private sealed class StubHandler : HttpMessageHandler
+    {
+        private readonly Func<HttpRequestMessage, HttpResponseMessage> _respond;
+
+        public StubHandler(HttpResponseMessage response) : this(_ => response) { }
+
+        public StubHandler(Func<HttpRequestMessage, HttpResponseMessage> respond) => _respond = respond;
+
+        protected override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken ct)
+        {
+            if (ct.IsCancellationRequested)
+                return Task.FromCanceled<HttpResponseMessage>(ct);
+            return Task.FromResult(_respond(request));
+        }
+    }
+
+    private static HttpSocialValidator Validator(HttpMessageHandler handler)
+        => new(new HttpClient(handler));
+
+    [Fact]
+    public async Task FediverseHandle_BuildsHostUrl()
+    {
+        var validator = Validator(new StubHandler(new HttpResponseMessage(HttpStatusCode.OK)));
+
+        var result = await validator.LookupAsync(SocialService.Fediverse, "@user@site.tld", CancellationToken.None);
+
+        Assert.True(result.Success);
+        Assert.Equal("https://site.tld/@user", result.ProfileUrl);
+        Assert.Equal("@user@site.tld", result.Handle);
+    }
+
+    [Fact]
+    public async Task FediverseHandle_FetchesInstanceSoftware()
+    {
+        var validator = Validator(new StubHandler(RespondFediverse("peertube")));
+
+        var result = await validator.LookupAsync(SocialService.Fediverse, "@gramps@llamachile.tube", CancellationToken.None);
+
+        Assert.True(result.Success);
+        Assert.Equal("peertube", result.FediverseSoftware);
+    }
+
+    [Fact]
+    public async Task FediverseHandle_RootRedirectToSubdomain_ResolvesSoftware()
+    {
+        var validator = Validator(new StubHandler(request =>
+        {
+            var uri = request.RequestUri!;
+            if (uri.Host == "site.tld")
+            {
+                if (uri.AbsolutePath == "/")
+                {
+                    // Identity domain's default app redirects to the real instance.
+                    return new HttpResponseMessage(HttpStatusCode.OK)
+                    {
+                        RequestMessage = new HttpRequestMessage(HttpMethod.Get, "https://social.site.tld/"),
+                    };
+                }
+                if (uri.AbsolutePath.StartsWith("/@"))
+                    return new HttpResponseMessage(HttpStatusCode.OK); // profile validates
+                return new HttpResponseMessage(HttpStatusCode.NotFound); // nodeinfo SSO-blocked
+            }
+            if (uri.Host == "social.site.tld")
+            {
+                if (uri.AbsolutePath.StartsWith("/.well-known"))
+                    return Json(new { links = new[] { new { rel = "http://nodeinfo.diaspora.software/ns/schema/2.0", href = "https://social.site.tld/nodeinfo/2.0" } } });
+                if (uri.AbsolutePath.StartsWith("/nodeinfo"))
+                    return Json(new { software = new { name = "mastodon", version = "4.6.3" } });
+            }
+            return new HttpResponseMessage(HttpStatusCode.OK);
+        }));
+
+        var result = await validator.LookupAsync(SocialService.Fediverse, "@user@site.tld", CancellationToken.None);
+
+        Assert.True(result.Success);
+        Assert.Equal("mastodon", result.FediverseSoftware);
+    }
+
+    [Fact]
+    public async Task FediverseHandle_NodeInfoUnavailable_StillSucceeds()
+    {
+        var validator = Validator(new StubHandler(request =>
+            request.RequestUri!.AbsolutePath.StartsWith("/.well-known")
+                ? new HttpResponseMessage(HttpStatusCode.NotFound)
+                : new HttpResponseMessage(HttpStatusCode.OK)));
+
+        var result = await validator.LookupAsync(SocialService.Fediverse, "@user@site.tld", CancellationToken.None);
+
+        Assert.True(result.Success);
+        Assert.Null(result.FediverseSoftware);
+    }
+
+    [Fact]
+    public async Task FediverseHandle_CanceledDuringNodeInfo_IsCanceled()
+    {
+        using var cts = new CancellationTokenSource();
+        var request = 0;
+        var validator = Validator(new StubHandler(_ =>
+        {
+            if (++request >= 2) cts.Cancel();
+            return new HttpResponseMessage(HttpStatusCode.OK);
+        }));
+
+        var result = await validator.LookupAsync(SocialService.Fediverse, "@user@site.tld", cts.Token);
+
+        Assert.True(result.Canceled);
+        Assert.False(result.Success);
+    }
+
+    private static Func<HttpRequestMessage, HttpResponseMessage> RespondFediverse(string software)
+    {
+        return request =>
+        {
+            if (request.RequestUri!.AbsolutePath.StartsWith("/.well-known"))
+            {
+                return Json(new
+                {
+                    links = new[]
+                    {
+                        new
+                        {
+                            rel = "http://nodeinfo.diaspora.software/ns/schema/2.0",
+                            href = $"https://{request.RequestUri.Host}/nodeinfo/2.0",
+                        },
+                    },
+                });
+            }
+            if (request.RequestUri!.AbsolutePath.StartsWith("/nodeinfo"))
+            {
+                return Json(new { software = new { name = software, version = "1.0.0" } });
+            }
+            return new HttpResponseMessage(HttpStatusCode.OK);
+        };
+    }
+
+    private static HttpResponseMessage Json(object payload)
+        => new(HttpStatusCode.OK) { Content = new StringContent(System.Text.Json.JsonSerializer.Serialize(payload)) };
+
+    [Fact]
+    public async Task KnownServiceHandle_CanonicalUrl()
+    {
+        var validator = Validator(new StubHandler(new HttpResponseMessage(HttpStatusCode.OK)));
+
+        var result = await validator.LookupAsync(SocialService.X, "creator", CancellationToken.None);
+
+        Assert.True(result.Success);
+        Assert.Equal("https://x.com/creator", result.ProfileUrl);
+        Assert.Equal("creator", result.Handle);
+    }
+
+    [Fact]
+    public async Task NotFound_IsRejected()
+    {
+        var validator = Validator(new StubHandler(new HttpResponseMessage(HttpStatusCode.NotFound)));
+
+        var result = await validator.LookupAsync(SocialService.X, "doesnotexist", CancellationToken.None);
+
+        Assert.False(result.Success);
+        Assert.Contains("NotFound", result.Error);
+    }
+
+    [Fact]
+    public async Task Redirect_CountsAsExists()
+    {
+        var validator = Validator(new StubHandler(new HttpResponseMessage(HttpStatusCode.Found)));
+
+        var result = await validator.LookupAsync(SocialService.GitHub, "dev", CancellationToken.None);
+
+        Assert.True(result.Success);
+    }
+
+    [Fact]
+    public async Task ConnectionFailure_IsFriendlyError()
+    {
+        var validator = Validator(new StubHandler(_ => throw new HttpRequestException("boom")));
+
+        var result = await validator.LookupAsync(SocialService.X, "user", CancellationToken.None);
+
+        Assert.False(result.Success);
+        Assert.Contains("Couldn't reach", result.Error);
+    }
+
+    [Fact]
+    public async Task CanceledToken_AbortsRequest()
+    {
+        using var cts = new CancellationTokenSource();
+        cts.Cancel();
+        var validator = Validator(new StubHandler(new HttpResponseMessage(HttpStatusCode.OK)));
+
+        var result = await validator.LookupAsync(SocialService.X, "creator", cts.Token);
+
+        Assert.True(result.Canceled);
+        Assert.False(result.Success);
+    }
+}