diff --git a/ui/src/tests/authentication.ts b/ui/src/tests/authentication.ts
new file mode 100644
index 0000000..9adebb3
--- /dev/null
+++ b/ui/src/tests/authentication.ts
@@ -0,0 +1,21 @@
+import {Page} from 'puppeteer';
+import {waitForExists} from './utils';
+import * as selector from './selector';
+
+const $loginForm = selector.form('#login-form');
+
+export const login = async (page: Page, user = 'admin', pass = 'admin'): Promise<void> => {
+    await waitForExists(page, selector.heading(), 'Login');
+    expect(page.url()).toContain('/login');
+    await page.type($loginForm.input('.name'), user);
+    await page.type($loginForm.input('.password'), pass);
+    await page.click($loginForm.button('.login'));
+    await waitForExists(page, selector.heading(), 'All Messages');
+    await waitForExists(page, 'button', 'logout');
+};
+
+export const logout = async (page: Page): Promise<void> => {
+    await page.click('#logout');
+    await waitForExists(page, selector.heading(), 'Login');
+    expect(page.url()).toContain('/login');
+};