drafts.js: Create initialize() function.

frontend_tests/node_tests/drafts.js

@@ -1,4 +1,5 @@
-global.stub_out_jquery();
+set_global('$', global.make_zjquery());
+set_global('window', {});
 
 add_dependencies({
     localstorage: 'js/localstorage',
@@ -128,3 +129,21 @@ var draft_2 = {
     stub_draft({});
     assert.equal(drafts.snapshot_message(), undefined);
 }());
+
+(function test_initialize() {
+    var message_content = $("#new_message_content");
+    message_content.focusout = function (f) {
+        assert.equal(f, drafts.update_draft);
+        f();
+    };
+
+    global.window.addEventListener = function (event_name, f) {
+        assert.equal(event_name, "beforeunload");
+        var called = false;
+        drafts.update_draft = function () { called = true; };
+        f();
+        assert(called);
+    };
+
+    drafts.initialize();
+}());

static/js/drafts.js

@@ -383,14 +383,13 @@ exports.launch = function () {
     });
 };
 
-$(function () {
-
+exports.initialize = function () {
     window.addEventListener("beforeunload", function () {
         exports.update_draft();
     });
 
     $("#new_message_content").focusout(exports.update_draft);
-});
+};
 
 return exports;
 

static/js/ui_init.js

@@ -259,6 +259,7 @@ $(function () {
     reactions.initialize();
     compose_fade.initialize();
     stream_list.initialize();
+    drafts.initialize();
 });