diff --git a/src/widgets/SampleList/model/stores/layoutStore/layoutStore.test.ts b/src/widgets/SampleList/model/stores/layoutStore/layoutStore.test.ts
index 8b7bcc0..b96ea16 100644
--- a/src/widgets/SampleList/model/stores/layoutStore/layoutStore.test.ts
+++ b/src/widgets/SampleList/model/stores/layoutStore/layoutStore.test.ts
@@ -7,6 +7,7 @@ import {
     describe,
     expect,
     it,
+    vi,
 } from 'vitest';
 
 // Helper to flush Svelte effects (they run in microtasks)
@@ -69,12 +70,17 @@ describe('layoutStore', () => {
         });
 
         it('should default to list mode when localStorage has invalid data', async () => {
+            // createPersistentStore logs and swallows the parse error; silence
+            // the expected warn so it doesn't pollute test output, and assert it.
+            const warnSpy = vi.spyOn(console, 'warn').mockImplementation(() => {});
             localStorage.setItem(STORAGE_KEY, 'invalid json');
 
             const { LayoutManager } = await import('./layoutStore.svelte');
             const manager = new LayoutManager();
 
             expect(manager.mode).toBe('list');
+            expect(warnSpy).toHaveBeenCalled();
+            warnSpy.mockRestore();
         });
 
         it('should default to list mode when localStorage has empty object', async () => {