diff --git a/tests/helpers/test-methods.d.ts b/tests/helpers/test-methods.d.ts
index 1a43b6e..cd73bc0 100644
--- a/tests/helpers/test-methods.d.ts
+++ b/tests/helpers/test-methods.d.ts
@@ -2,6 +2,8 @@ export function IShouldNotBeLoggedIn(page): Promise<void>;
 
 export function ILogInAs([page, username]): Promise<void>;
 
+export function ILogOut([page, base_url]): Promise<void>;
+
 export function theCacheHitExists([page, response]): Promise<void>;
 
 export function theHeaderContains([response, headerValue, shouldContain, ...headers]): Promise<void>;
diff --git a/tests/helpers/test-methods.js b/tests/helpers/test-methods.js
index 2760911..0d02d12 100644
--- a/tests/helpers/test-methods.js
+++ b/tests/helpers/test-methods.js
@@ -8,12 +8,25 @@ module.exports = {
   },
   ILogInAs: async ([page, username]) => {
     await page.goto('/user/login');
-    await page.fill('input[name="name"]', username);
-    await page.fill('input[name="pass"]', process.env.APP_SECRET);
-    await page.click('input[value="Log in"]', process.env.APP_SECRET);
+    await expect(page.locator('form.user-login-form')).toBeVisible;
+    await page.locator('input[name="name"]').fill(username);
+    await page.locator('input[name="pass"]').fill(process.env.APP_SECRET);
+    await page.locator('input[value="Log in"]').click();
     // Then make sure login worked.
     await expect(page.locator('body.user-logged-in').first()).toHaveCount(1);
   },
+  ILogOut: async ([page, base_url]) => {
+    // Go to the confirm form URL directly, instead of /user/logout: it saves a
+    // redirect and supports the destination parameter.
+    // Possible optimization: get the URL including token from the "logout"
+    // menu item; visiting that URL is faster because it doesn't need the extra
+    // "Log out" click.
+    await page.goto(`${base_url}/user/logout/confirm?destination=/user/login`);
+    await page.locator('input[value="Log out"]').click();
+    // Verify logout worked, on the immediate destination page. (The default
+    // home page does not have an indicator? So use the login page for that.)
+    await expect(page.locator('form.user-login-form')).toBeVisible;
+  },
   theCacheHitExists: async ([page, response]) => {
     expect(await response.headerValue('X-Drupal-Cache') == 'HIT' ||
       await response.headerValue('X-Drupal-Dynamic-Cache') == 'HIT' ||