From e14f3b241c54162690a2f3bcc51ba4b2e95fadf8 Mon Sep 17 00:00:00 2001
From: Victor Giers <mail@victorgiers.com>
Date: Thu, 2 Apr 2026 23:04:12 +0200
Subject: [PATCH] Add tests for transient box-create preview state and tool
 mode clearing

---
 tests/domain/editor-store.test.ts | 59 +++++++++++++++++++++++++++++++
 1 file changed, 59 insertions(+)

diff --git a/tests/domain/editor-store.test.ts b/tests/domain/editor-store.test.ts
index a0e73c70..a69c5276 100644
--- a/tests/domain/editor-store.test.ts
+++ b/tests/domain/editor-store.test.ts
@@ -133,4 +133,63 @@ describe("EditorStore", () => {
     expect(store.getState().viewportPanels.bottomRight.viewMode).toBe("front");
     expect(store.getState().viewportPanels.bottomRight.displayMode).toBe("normal");
   });
+
+  it("shares transient box-create preview state across viewport panels", () => {
+    const store = createEditorStore();
+
+    expect(store.getState().viewportTransientState.toolPreview).toEqual({
+      kind: "none"
+    });
+
+    store.setViewportToolPreview({
+      kind: "box-create",
+      sourcePanelId: "topLeft",
+      center: {
+        x: 4,
+        y: 0,
+        z: 8
+      }
+    });
+
+    expect(store.getState().viewportTransientState.toolPreview).toEqual({
+      kind: "box-create",
+      sourcePanelId: "topLeft",
+      center: {
+        x: 4,
+        y: 0,
+        z: 8
+      }
+    });
+
+    store.clearViewportToolPreview("topRight");
+    expect(store.getState().viewportTransientState.toolPreview).toEqual({
+      kind: "box-create",
+      sourcePanelId: "topLeft",
+      center: {
+        x: 4,
+        y: 0,
+        z: 8
+      }
+    });
+
+    store.clearViewportToolPreview("topLeft");
+    expect(store.getState().viewportTransientState.toolPreview).toEqual({
+      kind: "none"
+    });
+  });
+
+  it("clears transient viewport preview when leaving box-create mode", () => {
+    const store = createEditorStore();
+
+    store.setViewportToolPreview({
+      kind: "box-create",
+      sourcePanelId: "bottomRight",
+      center: null
+    });
+    store.setToolMode("select");
+
+    expect(store.getState().viewportTransientState.toolPreview).toEqual({
+      kind: "none"
+    });
+  });
 });