public async Task TaskCompleted_TestAsync()
{
var authentication = await this.TestContext.LoginRandomAsync(Authority.Admin);
var userCollection = userContext.GetService(typeof(IUserCollection)) as IUserCollection;
var user = await userCollection.GetUserAsync(authentication.ID);
var password = user.GetPassword();
var actualTaskID = Guid.Empty;
await userContext.AddTaskCompletedEventHandlerAsync(UserContext_TaskCompleted);
var expectedTaskID = await(user.SetUserNameAsync(authentication, password, RandomUtility.NextName()) as Task <Guid>);
Assert.AreEqual(expectedTaskID, actualTaskID);
await userContext.RemoveTaskCompletedEventHandlerAsync(UserContext_TaskCompleted);
expectedTaskID = await(user.SetUserNameAsync(authentication, password, RandomUtility.NextName()) as Task <Guid>);
Assert.AreNotEqual(expectedTaskID, actualTaskID);
void UserContext_TaskCompleted(object sender, TaskCompletedEventArgs e)
{
actualTaskID = e.TaskIDs.Single();
}
}