public void can_clear_payload()
{
var metricsMock = new Mock <IMetrics>();
var clock = new TestClock();
var meter = new DefaultMeterMetric(clock);
meter.Mark(new MetricSetItem("item1", "value1"), 1);
meter.Mark(new MetricSetItem("item2", "value2"), 1);
var meterValueSource = new MeterValueSource(
"test meter",
ConstantValue.Provider(meter.Value),
Unit.None,
TimeUnit.Milliseconds,
MetricTags.Empty);
var payloadBuilder = new LineProtocolPayloadBuilder();
var reporter = CreateReporter(payloadBuilder);
reporter.StartReportRun(metricsMock.Object);
reporter.ReportMetric("test", meterValueSource);
var sr = new StringWriter();
payloadBuilder.Payload().Format(sr);
sr.ToString().Should().NotBeNullOrWhiteSpace();
payloadBuilder.Clear();
payloadBuilder.Payload().Should().BeNull();
}