diff --git a/apps/showcase/config.setup.js b/apps/showcase/config.setup.js
new file mode 100644
index 000000000..54cb1d177
--- /dev/null
+++ b/apps/showcase/config.setup.js
@@ -0,0 +1,17 @@
+import { config } from '@vue/test-utils';
+import { defaultOptions } from 'primevue/config';
+
+config.global.mocks['$primevue'] = {
+    config: defaultOptions
+};
+
+Object.defineProperty(window, 'matchMedia', {
+    writable: true,
+    value: vi.fn().mockImplementation((query) => ({
+        matches: false,
+        media: query,
+        onchange: null,
+        addEventListener: vi.fn(),
+        removeEventListener: vi.fn()
+    }))
+});
diff --git a/apps/showcase/vitest.config.js b/apps/showcase/vitest.config.js
index be1b5ef4d..6602f0560 100644
--- a/apps/showcase/vitest.config.js
+++ b/apps/showcase/vitest.config.js
@@ -2,10 +2,8 @@ import vue from '@vitejs/plugin-vue';
 import path from 'path';
 import { mergeConfig } from 'vite';
 import { defineConfig } from 'vitest/config';
-import aliasConfig from './nuxt-vite.config.js';
 
 export default mergeConfig(
-    aliasConfig,
     defineConfig({
         plugins: [vue()],
         test: {
@@ -18,12 +16,8 @@ export default mergeConfig(
                 provider: 'istanbul',
                 reporter: ['text', 'json', 'html']
             },
-            setupFiles: [path.resolve(__dirname, './components/lib/config/PrimeVue.spec.js')]
-        },
-        resolve: {
-            alias: {
-                //'primevue/config': path.resolve(__dirname, './components/lib/config/PrimeVue.js')
-            }
+            setupFiles: [path.resolve(__dirname, './config.setup.js')],
+            include: [path.resolve(__dirname, '../../**/*.spec.js')]
         }
     })
 );
diff --git a/packages/primevue/src/togglebutton/ToggleButton.spec.js b/packages/primevue/src/togglebutton/ToggleButton.spec.js
index b21e4d490..3a8a1715f 100644
--- a/packages/primevue/src/togglebutton/ToggleButton.spec.js
+++ b/packages/primevue/src/togglebutton/ToggleButton.spec.js
@@ -16,7 +16,7 @@ describe('ToggleButton', () => {
 
     it('is ToggleButton exist', () => {
         expect(wrapper.find('.p-togglebutton.p-component').exists()).toBe(true);
-        expect(wrapper.find('span.pi-times.p-button-icon').exists()).toBe(true);
+        expect(wrapper.find('span.pi-times.p-togglebutton-icon').exists()).toBe(true);
     });
 
     it('should have onIcon', async () => {
@@ -44,11 +44,11 @@ describe('ToggleButton', () => {
             style: 'width: 10em'
         });
 
-        expect(wrapper.find('.p-button-label').text()).toBe('I confirm');
+        expect(wrapper.find('.p-togglebutton-label').text()).toBe('I confirm');
         expect(wrapper.attributes().style).toContain('width: 10em');
 
         await wrapper.setProps({ modelValue: false });
 
-        expect(wrapper.find('.p-button-label').text()).toBe('I reject');
+        expect(wrapper.find('.p-togglebutton-label').text()).toBe('I reject');
     });
 });
diff --git a/packages/primevue/src/tree/Tree.spec.js b/packages/primevue/src/tree/Tree.spec.js
index a791a3ba3..3abc504cb 100644
--- a/packages/primevue/src/tree/Tree.spec.js
+++ b/packages/primevue/src/tree/Tree.spec.js
@@ -48,7 +48,7 @@ describe('Tree.vue', () => {
             }
         });
 
-        let searchField = wrapper.find('input.p-tree-filter');
+        let searchField = wrapper.find('input.p-inputtext');
 
         await searchField.trigger('keydown.space');
 
@@ -57,7 +57,7 @@ describe('Tree.vue', () => {
 
     it('should render icon', ({ expect }) => {
         expect(wrapper.find('span.pi-inbox').exists()).toBeTruthy();
-        expect(wrapper.find('span.pi-inbox').classes('p-treenode-icon')).toBeTruthy();
+        expect(wrapper.find('span.pi-inbox').classes('p-tree-node-icon')).toBeTruthy();
     });
 
     it('should render icon slot', ({ expect }) => {