test(opcua): cover missing-script fallback; rename composer local for clarity

2026-06-07 05:04:41 -04:00
parent ae14d98658
commit 1a60c0199c
2 changed files with 30 additions and 2 deletions
@@ -182,6 +182,34 @@ public sealed class Phase7ComposerPurityTests
        plan.DependencyRefs.ShouldBe(new[] { "A.X", "B.Y" });
    }

+    /// <summary>A <see cref="VirtualTag"/> whose <c>ScriptId</c> has no matching <see cref="Script"/>
+    /// in the supplied list falls back to an empty Expression and an empty DependencyRefs —
+    /// the plan is always emitted (never dropped) and never carries a null Expression.</summary>
+    [Fact]
+    public void Compose_virtualtag_with_missing_script_yields_empty_expression_and_deps()
+    {
+        var vt = new VirtualTag
+        {
+            VirtualTagId = "vt-missing",
+            EquipmentId = "eq-1",
+            Name = "mystery-tag",
+            DataType = "Float64",
+            ScriptId = "s-does-not-exist",
+        };
+
+        var result = Phase7Composer.Compose(
+            Array.Empty<UnsArea>(), Array.Empty<UnsLine>(), Array.Empty<Equipment>(),
+            Array.Empty<DriverInstance>(), Array.Empty<ScriptedAlarm>(),
+            Array.Empty<Tag>(), Array.Empty<Namespace>(),
+            virtualTags: new[] { vt },
+            scripts: Array.Empty<Script>());
+
+        var plan = result.EquipmentVirtualTags.ShouldHaveSingleItem();
+        plan.VirtualTagId.ShouldBe("vt-missing");
+        plan.Expression.ShouldBe(string.Empty);
+        plan.DependencyRefs.ShouldBeEmpty();
+    }
+
    private static Equipment NewEquipment(string id) => new()
    {
        EquipmentId = id,