1 files changed, 46 insertions, 0 deletions
diff --git a/testing/web-platform/tests/cookie-store/change_eventhandler_for_no_name_equals_in_value.https.window.js b/testing/web-platform/tests/cookie-store/change_eventhandler_for_no_name_equals_in_value.https.window.js
new file mode 100644
index 0000000000..13d721786c
--- /dev/null
+++ b/testing/web-platform/tests/cookie-store/change_eventhandler_for_no_name_equals_in_value.https.window.js
@@ -0,0 +1,46 @@
+// META: title=Cookie Store API: Observing 'change' events in document when setting a cookie value containing "="
+// META: script=resources/cookie-test-helpers.js
+
+'use strict';
+
+cookie_test(async t => {
+  let eventPromise = observeNextCookieChangeEvent();
+  await cookieStore.set('', 'first-value');
+  const initialCookies = await cookieStore.getAll('');
+  assert_equals(initialCookies.length, 1);
+  assert_equals(initialCookies[0].name, '');
+  assert_equals(initialCookies[0].value, 'first-value');
+
+  await verifyCookieChangeEvent(
+    eventPromise, {changed: [{name: '', value: 'first-value'}]},
+    'Observed no-name change');
+
+  await promise_rejects_js(
+    t,
+    TypeError,
+    cookieStore.set('', 'suspicious-value=resembles-name-and-value'),
+    'Expected promise rejection when setting a cookie with' +
+      ' no name and "=" in value (via arguments)');
+
+  await promise_rejects_js(
+    t,
+    TypeError,
+    cookieStore.set(
+      {name: '', value: 'suspicious-value=resembles-name-and-value'}),
+    'Expected promise rejection when setting a cookie with' +
+      ' no name and "=" in value (via options)');
+
+  const cookies = await cookieStore.getAll('');
+  assert_equals(cookies.length, 1);
+  assert_equals(cookies[0].name, '');
+  assert_equals(cookies[0].value, 'first-value',
+      'Cookie with no name should still have previous value.');
+
+  eventPromise = observeNextCookieChangeEvent();
+  await cookieStore.delete('');
+  await verifyCookieChangeEvent(
+    eventPromise, {deleted: [{name: ''}]},
+    'Observed no-name deletion');
+
+}, "Verify that attempting to set a cookie with no name and with '=' in" +
+             " the value does not work.");