private async Task EventHubListener_CreatesCheckpointStrategy(int batchCheckpointFrequency, int expected)
{
var iterations = 100;
var strategy = EventHubListener.CreateCheckpointStrategy(batchCheckpointFrequency);
var checkpoints = 0;
Func <Task> checkpoint = () =>
{
checkpoints++;
return(Task.CompletedTask);
};
for (int i = 0; i < iterations; i++)
{
await strategy(checkpoint);
}
Assert.Equal(expected, checkpoints);
}
private void EventHubListener_Throws_IfInvalidCheckpointStrategy(int batchCheckpointFrequency)
{
var exc = Assert.Throws <InvalidOperationException>(() => EventHubListener.CreateCheckpointStrategy(batchCheckpointFrequency));
Assert.Equal("Batch checkpoint frequency must be larger than 0.", exc.Message);
}