1 files changed, 68 insertions, 0 deletions
diff --git a/dom/tests/browser/page_localstorage_snapshotting.html b/dom/tests/browser/page_localstorage_snapshotting.html
new file mode 100644
index 0000000000..b64f4b8cab
--- /dev/null
+++ b/dom/tests/browser/page_localstorage_snapshotting.html
@@ -0,0 +1,68 @@
+<!doctype html>
+<html>
+<head>
+  <meta charset="utf-8">
+<script>
+/**
+ * Helper page used by browser_localStorage_snapshotting.js.
+ *
+ * We expose methods to be invoked by ContentTask.spawn() calls.
+ *
+ **/
+var pageName = document.location.search.substring(1);
+window.addEventListener(
+  "load",
+  () => { document.getElementById("pageNameH").textContent = pageName; });
+
+function applyMutations(mutations) {
+  mutations.forEach(function([key, value]) {
+    if (key !== null) {
+      if (value === null) {
+        localStorage.removeItem(key);
+      } else {
+        localStorage.setItem(key, value);
+      }
+    } else {
+      localStorage.clear();
+    }
+  });
+}
+
+function getState() {
+  let state = {};
+  let length = localStorage.length;
+  for (let index = 0; index < length; index++) {
+    let key = localStorage.key(index);
+    state[key] = localStorage.getItem(key);
+  }
+  return state;
+}
+
+function getKeys() {
+  return Object.keys(localStorage);
+}
+
+function beginExplicitSnapshot() {
+  localStorage.beginExplicitSnapshot();
+}
+
+function checkpointExplicitSnapshot() {
+  localStorage.checkpointExplicitSnapshot();
+}
+
+function endExplicitSnapshot() {
+  localStorage.endExplicitSnapshot();
+}
+
+function getHasSnapshot() {
+  return localStorage.hasSnapshot;
+}
+
+function getSnapshotUsage() {
+  return localStorage.snapshotUsage;
+}
+
+</script>
+</head>
+<body><h2 id="pageNameH"></h2></body>
+</html>