From 18ec7dc0c3cb7b974ad3eef1e7a58b145ddee57b Mon Sep 17 00:00:00 2001
From: Victor Giers <mail@victorgiers.com>
Date: Tue, 31 Mar 2026 06:19:29 +0200
Subject: [PATCH] Add interaction links validation tests

---
 .../interaction-links.validation.test.ts      | 99 +++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 tests/domain/interaction-links.validation.test.ts

diff --git a/tests/domain/interaction-links.validation.test.ts b/tests/domain/interaction-links.validation.test.ts
new file mode 100644
index 00000000..9ddea073
--- /dev/null
+++ b/tests/domain/interaction-links.validation.test.ts
@@ -0,0 +1,99 @@
+import { describe, expect, it } from "vitest";
+
+import { createBoxBrush } from "../../src/document/brushes";
+import { createEmptySceneDocument } from "../../src/document/scene-document";
+import { validateSceneDocument } from "../../src/document/scene-document-validation";
+import { createPlayerStartEntity, createTeleportTargetEntity, createTriggerVolumeEntity } from "../../src/entities/entity-instances";
+import { createTeleportPlayerInteractionLink, createToggleVisibilityInteractionLink } from "../../src/interactions/interaction-links";
+
+describe("interaction link validation", () => {
+  it("accepts valid Trigger Volume teleport and visibility links", () => {
+    const triggerVolume = createTriggerVolumeEntity({
+      id: "entity-trigger-main"
+    });
+    const teleportTarget = createTeleportTargetEntity({
+      id: "entity-teleport-main"
+    });
+    const brush = createBoxBrush({
+      id: "brush-door"
+    });
+    const document = {
+      ...createEmptySceneDocument(),
+      brushes: {
+        [brush.id]: brush
+      },
+      entities: {
+        [triggerVolume.id]: triggerVolume,
+        [teleportTarget.id]: teleportTarget
+      },
+      interactionLinks: {
+        "link-teleport": createTeleportPlayerInteractionLink({
+          id: "link-teleport",
+          sourceEntityId: triggerVolume.id,
+          trigger: "enter",
+          targetEntityId: teleportTarget.id
+        }),
+        "link-visibility": createToggleVisibilityInteractionLink({
+          id: "link-visibility",
+          sourceEntityId: triggerVolume.id,
+          trigger: "exit",
+          targetBrushId: brush.id,
+          visible: false
+        })
+      }
+    };
+
+    const validation = validateSceneDocument(document);
+
+    expect(validation.errors).toEqual([]);
+  });
+
+  it("detects invalid interaction link source and target references", () => {
+    const playerStart = createPlayerStartEntity({
+      id: "entity-player-start-main"
+    });
+    const triggerVolume = createTriggerVolumeEntity({
+      id: "entity-trigger-main"
+    });
+    const document = {
+      ...createEmptySceneDocument(),
+      entities: {
+        [playerStart.id]: playerStart,
+        [triggerVolume.id]: triggerVolume
+      },
+      interactionLinks: {
+        "link-invalid-source": createTeleportPlayerInteractionLink({
+          id: "link-invalid-source",
+          sourceEntityId: playerStart.id,
+          trigger: "enter",
+          targetEntityId: "entity-missing-teleport-target"
+        }),
+        "link-invalid-visibility": createToggleVisibilityInteractionLink({
+          id: "link-invalid-visibility",
+          sourceEntityId: triggerVolume.id,
+          trigger: "exit",
+          targetBrushId: "brush-missing"
+        })
+      }
+    };
+
+    const validation = validateSceneDocument(document);
+
+    expect(validation.errors).toEqual(
+      expect.arrayContaining([
+        expect.objectContaining({
+          code: "invalid-interaction-source-kind",
+          path: "interactionLinks.link-invalid-source.sourceEntityId"
+        }),
+        expect.objectContaining({
+          code: "missing-teleport-target-entity",
+          path: "interactionLinks.link-invalid-source.action.targetEntityId"
+        }),
+        expect.objectContaining({
+          code: "missing-visibility-target-brush",
+          path: "interactionLinks.link-invalid-visibility.action.targetBrushId"
+        })
+      ])
+    );
+  });
+});