Added unit test to TotalSavings component

src/components/__tests__/TotalSavings.spec.ts

+// Import the necessary packages
+import { mount } from '@vue/test-utils'
+import TotalSavings from '@/components/HomeComponents/TotalSavings.vue'
+import { describe, it, expect } from 'vitest'
+import { createPinia } from 'pinia'
+
+describe('YourComponent', () => {
+  it('renders correctly with default value', async () => {
+
+    const pinia = createPinia()
+
+    const wrapper = mount(TotalSavings, {
+      global:{
+        plugins:[pinia]
+      }
+    })
+
+    // Assert that the component renders correctly
+    expect(wrapper.exists()).toBe(true)
+
+    // Assert that the rendered value matches the given value
+    expect(wrapper.find('#Saved').text()).toBe(`0 nok`)
+  })
+})