56 lines
2.0 KiB
Go
56 lines
2.0 KiB
Go
package ackhandler
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import (
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"github.com/lucas-clemente/quic-go/internal/wire"
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. "github.com/onsi/ginkgo"
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. "github.com/onsi/gomega"
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)
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var _ = Describe("StopWaitingManager", func() {
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var manager *stopWaitingManager
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BeforeEach(func() {
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manager = &stopWaitingManager{}
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})
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It("returns nil in the beginning", func() {
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Expect(manager.GetStopWaitingFrame(false)).To(BeNil())
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Expect(manager.GetStopWaitingFrame(true)).To(BeNil())
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})
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It("returns a StopWaitingFrame, when a new ACK arrives", func() {
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manager.ReceivedAck(&wire.AckFrame{LargestAcked: 10})
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Expect(manager.GetStopWaitingFrame(false)).To(Equal(&wire.StopWaitingFrame{LeastUnacked: 11}))
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})
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It("does not decrease the LeastUnacked", func() {
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manager.ReceivedAck(&wire.AckFrame{LargestAcked: 10})
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manager.ReceivedAck(&wire.AckFrame{LargestAcked: 9})
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Expect(manager.GetStopWaitingFrame(false)).To(Equal(&wire.StopWaitingFrame{LeastUnacked: 11}))
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})
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It("does not send the same StopWaitingFrame twice", func() {
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manager.ReceivedAck(&wire.AckFrame{LargestAcked: 10})
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Expect(manager.GetStopWaitingFrame(false)).ToNot(BeNil())
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Expect(manager.GetStopWaitingFrame(false)).To(BeNil())
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})
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It("gets the same StopWaitingFrame twice, if forced", func() {
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manager.ReceivedAck(&wire.AckFrame{LargestAcked: 10})
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Expect(manager.GetStopWaitingFrame(false)).ToNot(BeNil())
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Expect(manager.GetStopWaitingFrame(true)).ToNot(BeNil())
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Expect(manager.GetStopWaitingFrame(true)).ToNot(BeNil())
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})
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It("increases the LeastUnacked when a retransmission is queued", func() {
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manager.ReceivedAck(&wire.AckFrame{LargestAcked: 10})
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manager.QueuedRetransmissionForPacketNumber(20)
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Expect(manager.GetStopWaitingFrame(false)).To(Equal(&wire.StopWaitingFrame{LeastUnacked: 21}))
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})
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It("does not decrease the LeastUnacked when a retransmission is queued", func() {
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manager.ReceivedAck(&wire.AckFrame{LargestAcked: 10})
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manager.QueuedRetransmissionForPacketNumber(9)
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Expect(manager.GetStopWaitingFrame(false)).To(Equal(&wire.StopWaitingFrame{LeastUnacked: 11}))
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})
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})
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