1 files changed, 31 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webstorage/storage_length.html b/testing/web-platform/tests/webstorage/storage_length.html
new file mode 100644
index 000000000..ecee6ec9b
--- /dev/null
+++ b/testing/web-platform/tests/webstorage/storage_length.html
@@ -0,0 +1,31 @@
+<!DOCTYPE HTML>
+<meta charset=utf-8>
+<title>WebStorage Test: Storage - length</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+["localStorage", "sessionStorage"].forEach(function(name) {
+    test(function() {
+        var storage = window[name];
+        storage.clear();
+        assert_equals(storage.length, 0, "storage.length")
+
+        storage["name"] = "user1";
+        storage["age"] = "20";
+
+        assert_equals(storage.length, 2, "storage.length")
+    }, name + ".length (method access)");
+
+    test(function() {
+        var storage = window[name];
+        storage.clear();
+        assert_equals(storage.length, 0, "storage.length")
+
+        storage.setItem("name", "user1");
+        storage.setItem("age", "20");
+
+        assert_equals(storage.length, 2, "storage.length")
+    }, name + ".length (proprty access)");
+});
+</script>