add scroll tests

e2e/ambassador/src/content/events.js

@@ -0,0 +1,31 @@
+const keypress = (opts) => {
+  let event = new KeyboardEvent('keypress', {
+    key: opts.key,
+    altKey: opts.altKey,
+    shiftKey: opts.shiftKey,
+    ctrlKey: opts.ctrlKey
+  });
+  document.body.dispatchEvent(event);
+};
+
+const keydown = (opts) => {
+  let event = new KeyboardEvent('keydown', {
+    key: opts.key,
+    altKey: opts.altKey,
+    shiftKey: opts.shiftKey,
+    ctrlKey: opts.ctrlKey
+  });
+  document.body.dispatchEvent(event);
+};
+
+const keyup = (opts) => {
+  let event = new KeyboardEvent('keyup', {
+    key: opts.key,
+    altKey: opts.altKey,
+    shiftKey: opts.shiftKey,
+    ctrlKey: opts.ctrlKey
+  });
+  document.body.dispatchEvent(event);
+};
+
+export { keypress, keydown, keyup };

e2e/ambassador/src/content/index.js

@@ -3,6 +3,7 @@ import {
   SCROLL_GET, SCROLL_SET,
 } from '../shared/messages';
 import * as ipc from './ipc';
+import * as events from './events';
 import * as scrolls from './scrolls';
 
 ipc.receivePageMessage((message) => {
@@ -12,16 +13,13 @@ ipc.receivePageMessage((message) => {
 ipc.receiveBackgroundMesssage((message) => {
   switch (message.type) {
   case EVENT_KEYPRESS:
-    document.body.dispatchEvent(
-      new KeyboardEvent('keypress', { 'key': message.key }));
+    events.keypress(message);
     break;
   case EVENT_KEYDOWN:
-    document.body.dispatchEvent(
-      new KeyboardEvent('keydown', { 'key': message.key }));
+    events.keydown(message);
     break;
   case EVENT_KEYUP:
-    document.body.dispatchEvent(
-      new KeyboardEvent('keyup', { 'key': message.key }));
+    events.keyup(message);
     break;
   case SCROLL_GET:
     return Promise.resolve(scrolls.get());