Expect(fakeEventEmitter.GetMessages()[0].Event.(*events.CounterEvent)).To(Equal(&events.CounterEvent{
Name: proto.String("TruncatingBuffer.totalDroppedMessages"),
Delta: proto.Uint64(uint64(3)),
}))
})
Context("when the buffer fills once", func() {
tracksDroppedMessagesAnd("drops all the messages", 3, 3)
})
Context("when the buffer fills multiple times ", func() {
var receiveEvents int
var sendLog int
JustBeforeEach(func() {
outputChannel := buffer.GetOutputChannel()
for i := 0; i < receiveEvents; i++ {
Eventually(outputChannel).Should(Receive())
}
for i := 0; i < sendLog; i++ {
sendLogMessages("message X", inMessageChan)
}
})
Context("no event is read and buffer fills a second time", func() {
BeforeEach(func() {
receiveEvents = 0
sendLog = 1
})
})
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() {
outputChannel := buffer.GetOutputChannel()
