fix tests

__mocks__/matrix-js-sdk.js

@@ -79,6 +79,17 @@ export const mockSendTextMessage = jest.fn()
     return Promise.resolve()
   })
 
+export const mockSendMessage = jest.fn()
+  .mockImplementationOnce(() => {
+    return Promise.reject({
+      name: "UnknownDeviceError",
+      devices: ['device1', 'device2']
+    })
+  })
+  .mockImplementation(() => {
+    return Promise.resolve()
+  })
+
 export const mockSetDeviceKnown = jest.fn()
 
 export const mockInvite = jest.fn()
@@ -138,6 +149,12 @@ export const mockGetJoinedRoomMembers = jest.fn(() => {
   })
 });
 
+export const mockGetGroupUsers = jest.fn(() => {
+  return Promise.resolve({
+    chunk: { user_id: 'user_id_1', user_id: 'user_id_2' }
+  })
+});
+
 export const mockGetUser = jest.fn().mockReturnValue({ presence: 'online'});
 
 export const mockClient = {
@@ -156,6 +173,7 @@ export const mockClient = {
   isCryptoEnabled: mockIsCryptoEnabled,
   createRoom: mockCreateRoom,
   setPowerLevel: mockSetPowerLevel,
+  sendMessage: mockSendMessage,
   sendTextMessage: mockSendTextMessage,
   deactivateAccount: mockDeactivateAccount,
   login: mockLogin,
@@ -167,6 +185,7 @@ export const mockClient = {
   kick: mockKick,
   getJoinedRoomMembers: mockGetJoinedRoomMembers,
   getUser: mockGetUser,
+  getGroupUsers: mockGetGroupUsers,
 }
 
 export const WebStorageSessionStore = jest.fn()