1 files changed, 54 insertions, 0 deletions
diff --git a/dom/tests/mochitest/localstorage/test_localStorageSessionPrefOverride.html b/dom/tests/mochitest/localstorage/test_localStorageSessionPrefOverride.html
new file mode 100644
index 000000000..9fe6a48ec
--- /dev/null
+++ b/dom/tests/mochitest/localstorage/test_localStorageSessionPrefOverride.html
@@ -0,0 +1,54 @@
+<html>
+  <head>
+    <title>Local Storage Session Pref Override</title>
+    <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+    <script type="text/javascript" src="/tests/SimpleTest/SpawnTask.js"></script>
+    <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+    <script>
+      const ACCEPT_SESSION = 2;
+
+      add_task(function*() {
+        yield new Promise((resolve, reject) => {
+          SpecialPowers.pushPrefEnv({"set": [["network.cookie.lifetimePolicy",
+                                              ACCEPT_SESSION]]},
+                                    resolve);
+        });
+
+        // Before setting permission
+        yield new Promise((resolve) => {
+          var frame = document.createElement('iframe');
+          frame.src = "frameLocalStorageSessionOnly.html";
+
+          var listener = (e) => {
+            is(e.data, true, "Before adding permission should be session only");
+            window.removeEventListener('message', listener);
+            resolve();
+          };
+          window.addEventListener('message', listener);
+          document.body.appendChild(frame);
+        });
+
+        // After setting permission
+        yield new Promise((resolve) => {
+          SpecialPowers.pushPermissions([{"type": "cookie", "allow": 1, "context": document}],
+                                        resolve);
+        });
+
+        yield new Promise((resolve) => {
+          var frame = document.createElement('iframe');
+          frame.src = "frameLocalStorageSessionOnly.html";
+
+          var listener = (e) => {
+            is(e.data, false, "After adding permission should not be session only");
+            window.removeEventListener('message', listener);
+            resolve();
+          };
+          window.addEventListener('message', listener);
+          document.body.appendChild(frame);
+        });
+      });
+    </script>
+  </head>
+  <body>
+  </body>
+</html>