/// <summary>
/// Wait for the given number of metric requests to appear.
/// </summary>
/// <param name="count">The expected number of metric requests.</param>
/// <param name="timeout">The timeout</param>
/// <returns>The list of metric requests.</returns>
public IImmutableList <ExportMetricsServiceRequest> WaitForMetrics(
int count,
TimeSpan?timeout = null)
{
timeout ??= DefaultWaitTimeout;
var deadline = DateTime.Now.Add(timeout.Value);
IImmutableList <ExportMetricsServiceRequest> relevantMetricRequests = ImmutableList <ExportMetricsServiceRequest> .Empty;
while (DateTime.Now < deadline)
{
relevantMetricRequests =
MetricsMessages
.Where(m => MetricFilters.All(shouldReturn => shouldReturn(m)))
.ToImmutableList();
if (relevantMetricRequests.Count >= count)
{
break;
}
Thread.Sleep(500);
}
return(relevantMetricRequests);
}
