env, dom: add History stub, basic LocalStorage

* History: doesn't really do anything, just adding it to fix some pages
* LocalStorage: kind of works, but does lookups with linear search, and
  the quota limitation is on the number of entries not their size. plus
  it doesn't actually store anything on disk yet (like cookies).

1 files changed, 8 insertions, 0 deletions

diff --git a/test/js/window.html b/test/js/window.html
index 5aef5186..07b76145 100644
--- a/test/js/window.html
+++ b/test/js/window.html
@@ -7,5 +7,13 @@ assert_equals(window.toString(), "[object Window]");
 const desc = Object.getOwnPropertyDescriptor(window, "window");
 assert(desc.enumerable, "window must be enumerable");
 assert(!desc.configurable, "window must not be configurable");
+assert_equals(window.history.state, null);
+window.localStorage.setItem("a", "x");
+window.localStorage["b"] = "y";
+assert_equals(window.localStorage["b"], "y")
+delete window.localStorage.b;
+assert_equals(window.localStorage["b"], undefined);
+window.localStorage["b"] = "y";
+assert(window.sessionStorage instanceof Storage);
 document.getElementById("x").textContent = "Success";
 </script>