)
var _ = Describe("MetricBatcher", func() {
var (
fakeMetricSender *fake.FakeMetricSender
metricBatcher *metricbatcher.MetricBatcher
)
BeforeEach(func() {
fakeMetricSender = fake.NewFakeMetricSender()
metricBatcher = metricbatcher.New(fakeMetricSender, 50*time.Millisecond)
})
Describe("BatchIncrementCounter", func() {
It("batches and then sends a single metric", func() {
metricBatcher.BatchIncrementCounter("count")
Expect(fakeMetricSender.GetCounter("count")).To(BeEquivalentTo(0)) // should not increment.
metricBatcher.BatchIncrementCounter("count")
metricBatcher.BatchIncrementCounter("count")
time.Sleep(75 * time.Millisecond)
Expect(fakeMetricSender.GetCounter("count")).To(BeEquivalentTo(3)) // should update counter only when time out
metricBatcher.BatchIncrementCounter("count")
metricBatcher.BatchIncrementCounter("count")
Expect(fakeMetricSender.GetCounter("count")).To(BeEquivalentTo(3)) // should update counter only when time out
time.Sleep(75 * time.Millisecond)
Expect(fakeMetricSender.GetCounter("count")).To(BeEquivalentTo(5)) // should update counter only when time out
})
