node: Provide a default window object for the node tests.

This is preparation for our migration of our JS pipeline to webpack,
which includes as part of the process a hack of exporting globals via
the window object.

frontend_tests/node_tests/activity.js

@@ -75,7 +75,6 @@ set_global('reload', {
 set_global('resize', {
     resize_page_components: () => {},
 });
-set_global('window', 'window-stub');
 
 const me = {
     email: 'me@zulip.com',

frontend_tests/node_tests/compose.js

@@ -13,7 +13,7 @@ set_global('document', {
     location: {},
 });
 set_global('transmit', {});
-set_global('window', {
+global.patch_builtin('window', {
     bridge: false,
 });
 set_global('channel', {});

frontend_tests/node_tests/dispatch.js

@@ -1,7 +1,6 @@
 var noop = function () {};
 
 set_global('document', 'document-stub');
-set_global('window', {});
 set_global('$', function () {
     return {
         trigger: noop,

frontend_tests/node_tests/drafts.js

@@ -1,6 +1,5 @@
 set_global('$', global.make_zjquery());
 set_global('i18n', global.stub_i18n);
-set_global('window', {});
 
 zrequire('localstorage');
 zrequire('drafts');

frontend_tests/node_tests/hashchange.js

@@ -1,3 +1,9 @@
+global.patch_builtin('window', {
+    location: {
+        protocol: 'http:',
+        host: 'example.com',
+    },
+});
 zrequire('people');
 zrequire('hash_util');
 zrequire('hashchange');
@@ -5,12 +11,6 @@ zrequire('stream_data');
 
 set_global('document', 'document-stub');
 set_global('history', {});
-set_global('window', {
-    location: {
-        protocol: 'http:',
-        host: 'example.com',
-    },
-});
 
 set_global('admin', {});
 set_global('drafts', {});
@@ -346,4 +346,3 @@ run_test('save_narrow', () => {
     ]);
     assert.equal(url_pushed, 'http://example.com/#narrow/is/starred');
 });
-

frontend_tests/node_tests/markdown.js

@@ -12,7 +12,7 @@ zrequire('emoji');
 zrequire('message_store');
 zrequire('markdown');
 
-set_global('window', {
+global.patch_builtin('window', {
     location: {
         origin: 'http://zulip.zulipdev.com',
     },

frontend_tests/node_tests/notifications.js

@@ -8,7 +8,6 @@ set_global('document', {
         return true;
     },
 });
-set_global('window', {});
 set_global('page_params', {
     is_admin: false,
     realm_users: [],

frontend_tests/node_tests/server_events.js

@@ -1,7 +1,7 @@
 var noop = function () {};
 
 set_global('document', {});
-set_global('window', {
+global.patch_builtin('window', {
     addEventListener: noop,
 });
 global.stub_out_jquery();

frontend_tests/node_tests/subs.js

@@ -2,7 +2,7 @@ global.stub_out_jquery();
 
 set_global('ui', {});
 set_global('stream_data', {});
-set_global('window', {
+global.patch_builtin('window', {
     location: {
         hash: "#streams/1/announce",
     },
@@ -212,4 +212,3 @@ run_test('filter_table', () => {
     subs.filter_table({input: "", subscribed_only: false});
     assert($(".stream-row[data-stream-id='1']").hasClass("active"));
 });
-

frontend_tests/node_tests/upload.js

@@ -8,7 +8,7 @@ set_global('navigator', {
 set_global('i18n', global.stub_i18n);
 set_global('page_params', { });
 set_global('csrf_token', { });
-set_global('window', {
+global.patch_builtin('window', {
     bridge: false,
 });
 

frontend_tests/node_tests/util.js

@@ -1,6 +1,5 @@
 set_global('$', global.make_zjquery());
 set_global('document', {});
-set_global('window', {});
 
 zrequire('util');
 

frontend_tests/zjsunit/index.js

@@ -4,9 +4,20 @@ var fs = require('fs');
 global.assert = require('assert');
 require('node_modules/string.prototype.codepointat/codepointat.js');
 
-global.Dict = require('js/dict');
 global._ = require('node_modules/underscore/underscore.js');
 var _ = global._;
+const windowObj = {
+    location: {
+        hash: '#',
+    },
+};
+global.window = _.extend({}, windowObj, {
+    to_$: () => {
+        return windowObj;
+    },
+});
+
+global.Dict = require('js/dict');
 
 // Create a helper function to avoid sneaky delays in tests.
 function immediate(f) {