add test scenario for e2e encryption

src/tests/accept-invite.js

@@ -0,0 +1,43 @@
+/*
+Copyright 2018 New Vector Ltd
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+const assert = require('assert');
+const {acceptDialogMaybe} = require('./dialog');
+
+module.exports = async function acceptInvite(session, name) {
+  session.log.step(`accepts "${name}" invite`);
+  //TODO: brittle selector
+  const invitesHandles = await session.waitAndQueryAll('.mx_RoomTile_name.mx_RoomTile_invite', 1000);
+  const invitesWithText = await Promise.all(invitesHandles.map(async (inviteHandle) => {
+  	const text = await session.innerText(inviteHandle);
+  	return {inviteHandle, text};
+  }));
+  const inviteHandle = invitesWithText.find(({inviteHandle, text}) => {
+	return text.trim() === name;
+  }).inviteHandle;
+
+  await inviteHandle.click();
+
+  const acceptInvitationLink = await session.waitAndQuery(".mx_RoomPreviewBar_join_text a:first-child");
+  await acceptInvitationLink.click();
+
+  // accept e2e warning dialog
+  try {
+    acceptDialogMaybe(session, "encryption");
+  } catch(err) {}
+
+  session.log.done();
+}