message: Refactor tests to understand sendMessage instead of send{Text,Html}Message
diff: @@ -94,8 +94,7 @@ export function createTestClient() {
  },
  setAccountData: sinon.stub(),
  sendTyping: sinon.stub().returns(Promise.resolve({})),
  - sendTextMessage: () => Promise.resolve({}),
  - sendHtmlMessage: () => Promise.resolve({}),
  + sendMessage: () => Promise.resolve({}),
  getSyncState: () => "SYNCING",
  generateClientSecret: () => "t35tcl1Ent5ECr3T",
  isGuest: () => false,
  