public void UpdateAsync_UpdateTimeIsNotZero()
{
Mock <IChannelInfoProvider> providerMock = BuildChannelInfoProvider(DefaultReleaseChannel, NoUpgradeChannelInfo);
AutoUpdate update = BuildAutoUpdate(channelProvider: providerMock.Object);
// ensure that the UpdateTime is 0 before calling UpdateAsync
TimeSpan?updateTime = update.GetUpdateTime();
Assert.IsTrue(updateTime.HasValue);
Assert.AreEqual(TimeSpan.Zero, updateTime.Value);
update.UpdateAsync().Wait();
// ensure that the UpdateTime is not 0 after calling UpdateAsync
updateTime = update.GetUpdateTime();
Assert.IsTrue(updateTime.HasValue);
Assert.AreNotEqual(TimeSpan.Zero, updateTime.Value);
providerMock.VerifyAll();
}