diff --git a/CHANGELOG.md b/CHANGELOG.md
index 35aa4e7..d6333b9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
 
+### [0.4.1](https://github.com/Fantom-foundation/Fantom-Vue3-Components/compare/v0.4.0...v0.4.1) (2022-05-16)
+
 ## [0.4.0](https://github.com/Fantom-foundation/Fantom-Vue3-Components/compare/v0.3.0...v0.4.0) (2022-04-25)
 
 ## [0.3.0](https://github.com/Fantom-foundation/Fantom-Vue3-Components/compare/v0.2.0...v0.3.0) (2022-04-12)
diff --git a/package-lock.json b/package-lock.json
index 5c55582..4067677 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
     "name": "fantom-vue3-components",
-    "version": "0.4.0",
+    "version": "0.4.1",
     "lockfileVersion": 2,
     "requires": true,
     "packages": {
         "": {
             "name": "fantom-vue3-components",
-            "version": "0.4.0",
+            "version": "0.4.1",
             "license": "MIT",
             "dependencies": {
                 "nanoid": "^3.3.2",
diff --git a/package.json b/package.json
index fc1bb6f..b890e7a 100755
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "fantom-vue3-components",
-    "version": "0.4.0",
+    "version": "0.4.1",
     "description": "Library of various Vue 3 components with focus on accessibility",
     "author": "Fantom Foundation",
     "license": "MIT",
diff --git a/src/components/FComboBox/FComboBox.vue b/src/components/FComboBox/FComboBox.vue
index 9099a2b..30895cd 100755
--- a/src/components/FComboBox/FComboBox.vue
+++ b/src/components/FComboBox/FComboBox.vue
@@ -34,7 +34,7 @@
             </template>
 
             <template v-if="showButton" #suffix="sProps">
-                <span @click="onButtonClick">
+                <span @click="onButtonClick" data-testcode="fcombobox-button">
                     <slot name="button" v-bind="{ ...sProps, ...slotProps, ...loading }">
                         <FButton
                             :size="buttonSize"
diff --git a/src/plugins/vue-test-plugins/FCombobox/FCombobox.js b/src/plugins/vue-test-plugins/FCombobox/FCombobox.js
new file mode 100644
index 0000000..bbe5dbb
--- /dev/null
+++ b/src/plugins/vue-test-plugins/FCombobox/FCombobox.js
@@ -0,0 +1,47 @@
+/**
+ * Vue test utils plugins related to FCombobox component
+ */
+
+export function openComboboxPlugin(fCombobox) {
+    async function openCombobox() {
+        const { vm } = fCombobox;
+
+        let elem = fCombobox.find('[data-testcode="fcombobox-button"]');
+
+        if (!elem.exists()) {
+            elem = fCombobox.find('input');
+        }
+
+        if (elem.exists()) {
+            await elem.trigger('click');
+            await vm.$nextTick();
+            await vm.$nextTick();
+        }
+    }
+
+    return {
+        openCombobox,
+    };
+}
+
+export function selectComboboxItemPlugin(fCombobox) {
+    async function selectComboboxItem(itemIndex = 1) {
+        await fCombobox.openCombobox();
+
+        const fPopover = fCombobox.findComponent({ name: 'FPopover' });
+        const lis = fPopover.find('ul').findAll('li');
+
+        if (itemIndex < 1 || itemIndex > lis.length) {
+            throw new Error(`Bad item index ${itemIndex}`);
+        }
+
+        await lis[itemIndex - 1].trigger('click');
+        await fCombobox.vm.$nextTick();
+
+        return lis[itemIndex - 1];
+    }
+    ``;
+    return {
+        selectComboboxItem,
+    };
+}
diff --git a/src/plugins/vue-test-plugins/FCombobox/FCombobox.spec.js b/src/plugins/vue-test-plugins/FCombobox/FCombobox.spec.js
new file mode 100644
index 0000000..14cea8c
--- /dev/null
+++ b/src/plugins/vue-test-plugins/FCombobox/FCombobox.spec.js
@@ -0,0 +1,55 @@
+import { describe, it, expect, afterEach } from 'vitest';
+import { destroyWrapper } from '@/test/utils.js';
+import { mount } from '@vue/test-utils';
+import FComboBox from '@/components/FComboBox/FComboBox.vue';
+
+let wrapper = null;
+
+const list = [
+    { label: 'Option 1', value: 'opt1' },
+    { label: 'Option 2', value: 'opt2' },
+];
+
+function createWrapper(options = { props: { data: list }, attachTo: document.body }) {
+    return mount(FComboBox, options);
+}
+
+afterEach(() => {
+    destroyWrapper(wrapper);
+});
+
+describe('FCombobox vue test plugins', () => {
+    describe('#openCombobox', () => {
+        it('should open combobox list', async () => {
+            wrapper = createWrapper();
+
+            await wrapper.openCombobox();
+
+            expect(document.body.innerHTML).toMatch(new RegExp(`${list[0].label}.*${list[1].label}`));
+        });
+    });
+
+    describe('#selectComboboxItem', () => {
+        it('should select an item from the list', async () => {
+            wrapper = createWrapper();
+
+            await wrapper.selectComboboxItem(2);
+
+            const emitted = wrapper.emitted('update:value');
+
+            expect(emitted[0]).toEqual([list[1].value]);
+        });
+
+        it('should throw an error if bad item index is given', async () => {
+            wrapper = createWrapper();
+
+            await expect(async () => {
+                await wrapper.selectComboboxItem(0);
+            }).rejects.toBeInstanceOf(Error);
+
+            await expect(async () => {
+                await wrapper.selectComboboxItem(3);
+            }).rejects.toBeInstanceOf(Error);
+        });
+    });
+});
diff --git a/src/plugins/vue-test-plugins/install.js b/src/plugins/vue-test-plugins/install.js
index fe8793b..820a8e4 100644
--- a/src/plugins/vue-test-plugins/install.js
+++ b/src/plugins/vue-test-plugins/install.js
@@ -1,6 +1,11 @@
 import { config } from '@vue/test-utils';
 import { findByTestIdPlugin } from './findByTestId.js';
 import { findByTestCodePlugin } from './findByTestCode.js';
+import { openComboboxPlugin, selectComboboxItemPlugin } from './FCombobox/FCombobox.js';
 
-config.plugins.VueWrapper.install(findByTestIdPlugin);
-config.plugins.VueWrapper.install(findByTestCodePlugin);
+const { VueWrapper } = config.plugins;
+
+VueWrapper.install(findByTestIdPlugin);
+VueWrapper.install(findByTestCodePlugin);
+VueWrapper.install(openComboboxPlugin);
+VueWrapper.install(selectComboboxItemPlugin);
diff --git a/src/utils/interval/Interval.spec.js b/src/utils/interval/Interval.spec.js
index 5783e75..851fa8c 100644
--- a/src/utils/interval/Interval.spec.js
+++ b/src/utils/interval/Interval.spec.js
@@ -21,6 +21,7 @@ afterEach(() => {
     destroyInterval();
 
     vi.useRealTimers();
+    vi.restoreAllMocks();
     fn = null;
 });