feat(mesh-phase4): LocalDb alarm-condition-state store (replicated, pair-local)

Claude-Session: https://claude.ai/code/session_01GASWkNEi68FSCtvr6rLoEW
2026-07-23 12:19:44 -04:00
parent 34b613d942
commit 4f4cdd05ec
7 changed files with 754 additions and 5 deletions
@@ -0,0 +1,46 @@
+using Microsoft.Data.Sqlite;
+using Shouldly;
+using Xunit;
+
+namespace ZB.MOM.WW.OtOpcUa.Core.AlarmHistorian.Tests;
+
+/// <summary>
+///     Verifies <see cref="AlarmConditionStateSchema.Apply"/> creates its table and is idempotent —
+///     the DDL depends on nothing but a <see cref="SqliteConnection"/>, so a bare in-memory
+///     connection is a faithful harness (no <c>zb_hlc_next()</c> UDF is involved in <c>CREATE TABLE</c>).
+/// </summary>
+[Trait("Category", "Unit")]
+public sealed class AlarmConditionStateSchemaTests
+{
+    private static SqliteConnection OpenInMemory()
+    {
+        var connection = new SqliteConnection("Data Source=:memory:");
+        connection.Open();
+        return connection;
+    }
+
+    /// <summary>A single Apply creates the table.</summary>
+    [Fact]
+    public void Apply_creates_the_state_table()
+    {
+        using var connection = OpenInMemory();
+
+        AlarmConditionStateSchema.Apply(connection);
+
+        using var cmd = connection.CreateCommand();
+        cmd.CommandText =
+            "SELECT COUNT(*) FROM sqlite_master WHERE type = 'table' AND name = @Name";
+        cmd.Parameters.AddWithValue("@Name", AlarmConditionStateSchema.StateTable);
+        ((long)cmd.ExecuteScalar()!).ShouldBe(1);
+    }
+
+    /// <summary>Applying twice on the same connection does not throw (CREATE TABLE IF NOT EXISTS).</summary>
+    [Fact]
+    public void Apply_is_idempotent()
+    {
+        using var connection = OpenInMemory();
+
+        AlarmConditionStateSchema.Apply(connection);
+        Should.NotThrow(() => AlarmConditionStateSchema.Apply(connection));
+    }
+}