feat(delmia-notifier): connect-failure-only failover loop

2026-06-26 05:13:58 -04:00
parent 991c263c3e
commit d26462ed8d
3 changed files with 138 additions and 0 deletions
@@ -0,0 +1,70 @@
+using ZB.MOM.WW.ScadaBridge.DelmiaNotifier;
+
+namespace ZB.MOM.WW.ScadaBridge.DelmiaNotifier.Tests;
+
+public class NotifierTests
+{
+    private sealed class FakeSender(params AttemptOutcome[] outcomes) : IRecipeSender
+    {
+        private readonly Queue<AttemptOutcome> _outcomes = new(outcomes);
+        public int Calls { get; private set; }
+
+        public Task<AttemptOutcome> SendAsync(string baseUrl, RecipeDownload payload, CancellationToken ct)
+        {
+            Calls++;
+            return Task.FromResult(_outcomes.Dequeue());
+        }
+    }
+
+    private static readonly string[] TwoUrls = ["http://a", "http://b"];
+    private static readonly RecipeDownload Payload =
+        new() { MachineCode = "Z", DownloadPath = "x", WorkOrderNumber = "W", PartNumber = "P" };
+
+    [Fact]
+    public async Task ConnectFailure_advances_to_next_url()
+    {
+        var sender = new FakeSender(
+            new AttemptOutcome(AttemptKind.ConnectFailed, 0, null, "refused"),
+            new AttemptOutcome(AttemptKind.Connected, 200, new RecipeDownloadResult { Result = true }, null));
+        var result = await Notifier.RunAsync(TwoUrls, Payload, sender, CancellationToken.None);
+        Assert.True(result.Ok);
+        Assert.Equal(2, sender.Calls);
+    }
+
+    [Fact]
+    public async Task Connected_result_false_is_final_no_failover()
+    {
+        var sender = new FakeSender(
+            new AttemptOutcome(AttemptKind.Connected, 200, new RecipeDownloadResult { Result = false, ResultText = "bad machine" }, null),
+            new AttemptOutcome(AttemptKind.Connected, 200, new RecipeDownloadResult { Result = true }, null));
+        var result = await Notifier.RunAsync(TwoUrls, Payload, sender, CancellationToken.None);
+        Assert.False(result.Ok);
+        Assert.Contains("bad machine", result.Reason);
+        Assert.Equal(1, sender.Calls);
+    }
+
+    [Fact]
+    public async Task Connected_5xx_is_final_no_failover()
+    {
+        var sender = new FakeSender(
+            new AttemptOutcome(AttemptKind.Connected, 500, null, null),
+            new AttemptOutcome(AttemptKind.Connected, 200, new RecipeDownloadResult { Result = true }, null));
+        var result = await Notifier.RunAsync(TwoUrls, Payload, sender, CancellationToken.None);
+        Assert.False(result.Ok);
+        Assert.Contains("500", result.Reason);
+        Assert.Equal(1, sender.Calls);
+    }
+
+    [Fact]
+    public async Task All_connect_failures_report_unreachable_with_last_error()
+    {
+        var sender = new FakeSender(
+            new AttemptOutcome(AttemptKind.ConnectFailed, 0, null, "refused-a"),
+            new AttemptOutcome(AttemptKind.ConnectFailed, 0, null, "refused-b"));
+        var result = await Notifier.RunAsync(TwoUrls, Payload, sender, CancellationToken.None);
+        Assert.False(result.Ok);
+        Assert.Contains("unreachable", result.Reason);
+        Assert.Contains("refused-b", result.Reason);
+        Assert.Equal(2, sender.Calls);
+    }
+}