1 files changed, 32 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webstorage/storage_string_conversion.window.js b/testing/web-platform/tests/webstorage/storage_string_conversion.window.js
new file mode 100644
index 0000000000..51b07a3a38
--- /dev/null
+++ b/testing/web-platform/tests/webstorage/storage_string_conversion.window.js
@@ -0,0 +1,32 @@
+["localStorage", "sessionStorage"].forEach(function(name) {
+    test(function() {
+        assert_true(name in window, name + " exist");
+
+        var storage = window[name];
+        storage.clear();
+
+        assert_equals(storage.length, 0);
+
+        storage.a = null;
+        assert_equals(storage.a, "null");
+        storage.b = 0;
+        assert_equals(storage.b, "0");
+        storage.c = function(){};
+        assert_equals(storage.c, "function(){}");
+
+        storage.setItem('d', null);
+        assert_equals(storage.d, "null");
+        storage.setItem('e', 0);
+        assert_equals(storage.e, "0");
+        storage.setItem('f', function(){});
+        assert_equals(storage.f, "function(){}");
+
+        storage['g'] = null;
+        assert_equals(storage.g, "null");
+        storage['h'] = 0;
+        assert_equals(storage.h, "0");
+        storage['i'] = function(){};
+        assert_equals(storage.f, "function(){}");
+
+    }, name + " only stores strings");
+});