public async Task TestInvalidation()
{
var i = 0;
var asyncCachedValueTest = new AsyncCachedValue <int>(() => Task.FromResult(i++));
Assert.Equal(0, await asyncCachedValueTest.Get());
Assert.Equal(0, await asyncCachedValueTest.Get());
asyncCachedValueTest.Invalidate();
Assert.Equal(1, await asyncCachedValueTest.Get());
Assert.Equal(1, await asyncCachedValueTest.Get());
}
