close(stopChannel)
Eventually(done).Should(BeClosed())
})
})
Context("as a channel", func() {
JustBeforeEach(func() {
go buffer.Run()
})
It("works like a channel", func() {
sendLogMessages("message 1", inMessageChan)
readMessage := <-buffer.GetOutputChannel()
Expect(readMessage.GetLogMessage().GetMessage()).To(ContainSubstring("message 1"))
sendLogMessages("message 2", inMessageChan)
readMessage2 := <-buffer.GetOutputChannel()
Expect(readMessage2.GetLogMessage().GetMessage()).To(ContainSubstring("message 2"))
})
Context("tracking dropped messages", func() {
var fakeEventEmitter *fake.FakeEventEmitter
BeforeEach(func() {
fakeEventEmitter = fake.NewFakeEventEmitter("doppler")
sender := metric_sender.NewMetricSender(fakeEventEmitter)
})
It("keeps track of dropped messages", func() {
Eventually(fakeEventEmitter.GetMessages).Should(HaveLen(1))
Expect(fakeEventEmitter.GetMessages()[0].Event.(*events.CounterEvent)).To(Equal(&events.CounterEvent{
Name: proto.String("TruncatingBuffer.totalDroppedMessages"),
Delta: proto.Uint64(uint64(total)),
}))
})
}
Context("when the buffer fills once", func() {
JustBeforeEach(func() {
Expect(buffer.GetDroppedMessageCount()).To(BeZero())
firstBuffer := buffer.GetOutputChannel()
sendLogMessages("message 1", inMessageChan)
sendLogMessages("message 2", inMessageChan)
sendLogMessages("message 3", inMessageChan)
sendLogMessages("message 4", inMessageChan)
Eventually(buffer.GetOutputChannel).ShouldNot(Equal(firstBuffer))
})
tracksDroppedMessages("drops all the messages", 3, 3)
Context("when the buffer fills multiple times", func() {
var receiveEvents int
var sendLog int
JustBeforeEach(func() {