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batch_acknowledger_test.go
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package rabbitmq
import (
"testing"
"time"
"github.com/smartystreets/assertions/should"
"github.com/smartystreets/gunit"
)
func TestSimpleAcknowledgerFixture(t *testing.T) {
gunit.Run(new(SimpleAcknowledgerFixture), t)
}
type SimpleAcknowledgerFixture struct {
*gunit.Fixture
channel *FakeAcknowledgmentChannel
acknowledger *BatchAcknowledger
control chan interface{}
input chan interface{}
}
func (this *SimpleAcknowledgerFixture) Setup() {
this.channel = &FakeAcknowledgmentChannel{}
this.control = make(chan interface{}, 16)
this.input = make(chan interface{}, 16)
this.acknowledger = newAcknowledger(this.control, this.input)
go this.acknowledger.Listen()
}
////////////////////////////////////////////////////////////////
func (this *SimpleAcknowledgerFixture) TestItemIsAcknowledged() {
this.input <- newReceipt(this.channel, 5678)
close(this.input)
time.Sleep(time.Millisecond * 10)
this.So(this.channel.callsMulti, should.Equal, 1)
this.So(this.channel.latestMulti, should.Equal, 5678)
}
////////////////////////////////////////////////////////////////
func (this *SimpleAcknowledgerFixture) TestOnlyLastItemIsAcknowledged() {
this.input <- newReceipt(this.channel, 5678)
this.input <- newReceipt(this.channel, 5679)
close(this.input)
time.Sleep(time.Millisecond * 10)
this.So(this.channel.callsMulti, should.Equal, 1)
this.So(this.channel.latestMulti, should.Equal, 5679)
}
////////////////////////////////////////////////////////////////
func (this *SimpleAcknowledgerFixture) TestControlChannelReceivesCompletionNotice() {
this.input <- newReceipt(this.channel, 1)
this.input <- newReceipt(this.channel, 2)
this.input <- newReceipt(this.channel, 3)
close(this.input)
this.So((<-this.control).(acknowledgementCompleted).Acknowledgements, should.Equal, 3)
}
////////////////////////////////////////////////////////////////
func (this *SimpleAcknowledgerFixture) TestFinalReceiptIsAlwaysCalled() {
this.input <- newReceipt(this.channel, 1)
this.input <- newReceipt(this.channel, 2)
this.input <- newReceipt(this.channel, 3)
this.input <- 0 // junk to be ignored
close(this.input)
this.So((<-this.control).(acknowledgementCompleted).Acknowledgements, should.Equal, 3)
this.So(this.channel.callsMulti, should.Equal, 1)
this.So(this.channel.latestMulti, should.Equal, 3)
}
////////////////////////////////////////////////////////////////
func (this *SimpleAcknowledgerFixture) TestLoopExitsAfterAllDeliveriesReceived() {
this.input <- newReceipt(this.channel, 1)
this.input <- newReceipt(this.channel, 2)
this.input <- newReceipt(this.channel, 3)
this.input <- subscriptionClosed{DeliveryCount: 1} // realistically, we'd only ever see a single closed event per ack'r lifetime
this.input <- subscriptionClosed{DeliveryCount: 2}
this.So((<-this.control).(acknowledgementCompleted).Acknowledgements, should.Equal, 3)
this.So(this.channel.callsMulti, should.Equal, 1)
this.So(this.channel.latestMulti, should.Equal, 3)
}
////////////////////////////////////////////////////////////////
func (this *SimpleAcknowledgerFixture) TestLoopExitsAfterOnlyFinalDeliveryReceived() {
this.input <- newReceipt(this.channel, 17)
this.input <- subscriptionClosed{
LatestConsumer: this.channel,
LatestDeliveryTag: 17,
DeliveryCount: 17,
}
this.So((<-this.control).(acknowledgementCompleted).Acknowledgements, should.Equal, 1)
this.So(this.channel.callsMulti, should.Equal, 1)
this.So(this.channel.latestMulti, should.Equal, 17)
}
////////////////////////////////////////////////////////////////
func (this *SimpleAcknowledgerFixture) TestLoopExitsAfterAllDeliveriesReceived2() {
this.input <- subscriptionClosed{DeliveryCount: 1} // realistically, we'd only ever see a single closed event per ack'r lifetime
this.input <- newReceipt(this.channel, 1)
this.input <- subscriptionClosed{DeliveryCount: 2}
this.input <- newReceipt(this.channel, 2)
this.input <- newReceipt(this.channel, 3)
this.So((<-this.control).(acknowledgementCompleted).Acknowledgements, should.Equal, 3)
this.So(this.channel.callsMulti, should.Equal, 1)
this.So(this.channel.latestMulti, should.Equal, 3)
}
////////////////////////////////////////////////////////////////
type FakeAcknowledgmentChannel struct {
calls uint64
callsMulti uint64
callsSingle uint64
latest uint64
latestMulti uint64
latestSingle uint64
tags []uint64
tagsMulti []uint64
tagsSingle []uint64
}
func (this *FakeAcknowledgmentChannel) AcknowledgeSingleMessage(value uint64) error {
this.callsSingle++
this.latestSingle = value
this.tagsSingle = append(this.tagsSingle, value)
return this.acknowledgeMessage(value)
}
func (this *FakeAcknowledgmentChannel) AcknowledgeMultipleMessages(value uint64) error {
this.callsMulti++
this.latestMulti = value
this.tagsMulti = append(this.tagsMulti, value)
return this.acknowledgeMessage(value)
}
func (this *FakeAcknowledgmentChannel) acknowledgeMessage(value uint64) error {
this.calls++
this.latest = value
this.tags = append(this.tags, value)
return nil
}