fix(ui): Alarm Summary poll defers row rebuilds to the live path while IsLive (plan R2-07 T8)

2026-07-13 10:57:09 -04:00
parent d33337a834
commit 925c869826
3 changed files with 53 additions and 7 deletions
@@ -244,6 +244,40 @@ public class AlarmSummaryRenderTests : BunitContext
        });
    }

+    // ── arch-review R2 N5: while live, the poll updates only _notReporting ──────
+
+    [Fact]
+    public void PollWhileLive_UpdatesNotReportingOnly_DoesNotRegressLiveRows()
+    {
+        // Poll snapshot = Zeta/Alpha (constructor stub) + a not-reporting instance.
+        _summary.GetSiteAlarmsAsync(Arg.Any<int>(), Arg.Any<CancellationToken>())
+            .Returns(ci => Task.FromResult(new AlarmSummaryResult(
+                new List<AlarmSummaryRow>
+                {
+                    new("Zeta", new AlarmStateChanged("Zeta", "Z-alarm", AlarmState.Active, 900, DateTimeOffset.UtcNow)),
+                },
+                new[] { "OfflineInstance" })));
+
+        var cut = RenderWithSiteSelected();
+
+        // Go live with a fresher delta: Gamma only (arch-review R2 N5).
+        _liveCache.PushAlarms(new List<AlarmStateChanged>
+        {
+            new("Gamma", "G-alarm", AlarmState.Active, 300, DateTimeOffset.UtcNow),
+        });
+        cut.WaitForAssertion(() => Assert.Equal("Gamma", FirstRowInstance(cut)));
+
+        // A poll now completes: it owns _notReporting but must NOT rebuild the rows.
+        cut.Find("[data-test='alarm-summary-refresh']").Click();
+
+        cut.WaitForAssertion(() =>
+        {
+            Assert.Contains("OfflineInstance", cut.Markup);            // notReporting refreshed
+            Assert.Equal("Gamma", FirstRowInstance(cut));              // live rows NOT regressed
+            Assert.Single(cut.FindAll("tr[data-test='alarm-summary-row']"));
+        });
+    }
+
    /// <summary>
    /// Controllable in-memory fake of <see cref="ISiteAlarmLiveCache"/>: records
    /// subscribe/dispose counts and lets a test push a live snapshot (which flips