diff --git a/src/test/webapp/unit/module/secondary/FakeStorage.fixture.ts b/src/test/webapp/unit/module/secondary/FakeStorage.fixture.ts
new file mode 100644
index 00000000000..df04fa88f59
--- /dev/null
+++ b/src/test/webapp/unit/module/secondary/FakeStorage.fixture.ts
@@ -0,0 +1,13 @@
+export const fakeStorage = (): Storage => {
+  let store: { [key: string]: string } = {};
+  return {
+    getItem: (key: string) => store[key],
+    setItem: (key: string, value: string) => (store[key] = value),
+    removeItem: (key: string) => delete store[key],
+    clear: () => (store = {}),
+    get length() {
+      return Object.keys(store).length;
+    },
+    key: (index: number) => Object.keys(store)[index],
+  };
+};
diff --git a/src/test/webapp/unit/module/secondary/LocalStorageModuleParametersRepository.spec.ts b/src/test/webapp/unit/module/secondary/LocalStorageModuleParametersRepository.spec.ts
index 7f7bdba96c6..c061c10dcf2 100644
--- a/src/test/webapp/unit/module/secondary/LocalStorageModuleParametersRepository.spec.ts
+++ b/src/test/webapp/unit/module/secondary/LocalStorageModuleParametersRepository.spec.ts
@@ -1,20 +1,7 @@
 import { ModuleParameterType } from '@/module/domain/ModuleParameters';
 import { LocalStorageModuleParametersRepository } from '@/module/secondary/LocalStorageModuleParametersRepository';
 import { describe, expect, it } from 'vitest';
-
-const fakeStorage = (): Storage => {
-  let store: { [key: string]: string } = {};
-  return {
-    getItem: (key: string) => store[key],
-    setItem: (key: string, value: string) => (store[key] = value),
-    removeItem: (key: string) => delete store[key],
-    clear: () => (store = {}),
-    get length() {
-      return Object.keys(store).length;
-    },
-    key: (index: number) => Object.keys(store)[index],
-  };
-};
+import { fakeStorage } from './FakeStorage.fixture';
 
 const STORAGE_KEY_MODULE_PARAMETERS_SUFFIX = '_moduleParameters';
 const STORAGE_KEY_CURRENT_FOLDER_PATH = 'currentFolderPath';
diff --git a/src/test/webapp/unit/module/secondary/LocalWindowThemeRepository.spec.ts b/src/test/webapp/unit/module/secondary/LocalWindowThemeRepository.spec.ts
index 83f582e1d83..5829c7d1871 100644
--- a/src/test/webapp/unit/module/secondary/LocalWindowThemeRepository.spec.ts
+++ b/src/test/webapp/unit/module/secondary/LocalWindowThemeRepository.spec.ts
@@ -1,20 +1,7 @@
 import { LocalWindowThemeRepository } from '@/module/secondary/LocalWindowThemeRepository';
 import { describe, expect, it } from 'vitest';
 import { stubWindow } from '../primary/GlobalWindow.fixture';
-
-const fakeStorage = (): Storage => {
-  let store: { [key: string]: string } = {};
-  return {
-    getItem: (key: string) => store[key],
-    setItem: (key: string, value: string) => (store[key] = value),
-    removeItem: (key: string) => delete store[key],
-    clear: () => (store = {}),
-    get length() {
-      return Object.keys(store).length;
-    },
-    key: (index: number) => Object.keys(store)[index],
-  };
-};
+import { fakeStorage } from './FakeStorage.fixture';
 
 describe('LocalWindowThemeRepository', () => {
   it('should return light theme if no user theme preference stored in localStorage', () => {