public async Task SendBatchOfActivities()
{
SimpleAdapter a = new SimpleAdapter();
TurnContext c = new TurnContext(a, new Activity());
Assert.IsFalse(c.Responded);
var message1 = TestMessage.Message("message1");
var message2 = TestMessage.Message("message2");
var response = await c.SendActivities(new IActivity[] { message1, message2 });
Assert.IsTrue(c.Responded);
Assert.IsTrue(response.Length == 2);
Assert.IsTrue(response[0].Id == "message1");
Assert.IsTrue(response[1].Id == "message2");
}