93 lines
3.3 KiB
Go
93 lines
3.3 KiB
Go
package h2mux
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import (
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"bytes"
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"io"
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"testing"
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"github.com/stretchr/testify/assert"
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)
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const testWindowSize uint32 = 65535
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const testMaxWindowSize uint32 = testWindowSize << 2
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// Only sending WINDOW_UPDATE frame, so sendWindow should never change
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func TestFlowControlSingleStream(t *testing.T) {
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stream := &MuxedStream{
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responseHeadersReceived: make(chan struct{}),
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readBuffer: NewSharedBuffer(),
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writeBuffer: &bytes.Buffer{},
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receiveWindow: testWindowSize,
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receiveWindowCurrentMax: testWindowSize,
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receiveWindowMax: testMaxWindowSize,
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sendWindow: testWindowSize,
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readyList: NewReadyList(),
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}
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assert.True(t, stream.consumeReceiveWindow(testWindowSize/2))
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dataSent := testWindowSize / 2
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assert.Equal(t, testWindowSize-dataSent, stream.receiveWindow)
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assert.Equal(t, testWindowSize, stream.receiveWindowCurrentMax)
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assert.Equal(t, uint32(0), stream.windowUpdate)
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tempWindowUpdate := stream.windowUpdate
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streamChunk := stream.getChunk()
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assert.Equal(t, tempWindowUpdate, streamChunk.windowUpdate)
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assert.Equal(t, testWindowSize-dataSent, stream.receiveWindow)
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assert.Equal(t, uint32(0), stream.windowUpdate)
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assert.Equal(t, testWindowSize, stream.sendWindow)
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assert.True(t, stream.consumeReceiveWindow(2))
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dataSent += 2
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assert.Equal(t, testWindowSize-dataSent, stream.receiveWindow)
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assert.Equal(t, testWindowSize<<1, stream.receiveWindowCurrentMax)
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assert.Equal(t, (testWindowSize<<1)-stream.receiveWindow, stream.windowUpdate)
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tempWindowUpdate = stream.windowUpdate
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streamChunk = stream.getChunk()
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assert.Equal(t, tempWindowUpdate, streamChunk.windowUpdate)
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assert.Equal(t, testWindowSize<<1, stream.receiveWindow)
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assert.Equal(t, uint32(0), stream.windowUpdate)
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assert.Equal(t, testWindowSize, stream.sendWindow)
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assert.True(t, stream.consumeReceiveWindow(testWindowSize+10))
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dataSent = testWindowSize + 10
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assert.Equal(t, (testWindowSize<<1)-dataSent, stream.receiveWindow)
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assert.Equal(t, testWindowSize<<2, stream.receiveWindowCurrentMax)
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assert.Equal(t, (testWindowSize<<2)-stream.receiveWindow, stream.windowUpdate)
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tempWindowUpdate = stream.windowUpdate
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streamChunk = stream.getChunk()
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assert.Equal(t, tempWindowUpdate, streamChunk.windowUpdate)
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assert.Equal(t, testWindowSize<<2, stream.receiveWindow)
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assert.Equal(t, uint32(0), stream.windowUpdate)
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assert.Equal(t, testWindowSize, stream.sendWindow)
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assert.False(t, stream.consumeReceiveWindow(testMaxWindowSize+1))
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assert.Equal(t, testWindowSize<<2, stream.receiveWindow)
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assert.Equal(t, testMaxWindowSize, stream.receiveWindowCurrentMax)
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}
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func TestMuxedStreamEOF(t *testing.T) {
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for i := 0; i < 4096; i++ {
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readyList := NewReadyList()
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stream := &MuxedStream{
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streamID: 1,
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readBuffer: NewSharedBuffer(),
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receiveWindow: 65536,
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receiveWindowMax: 65536,
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sendWindow: 65536,
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readyList: readyList,
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}
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go func() { stream.Close() }()
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n, err := stream.Read([]byte{0})
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assert.Equal(t, io.EOF, err)
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assert.Equal(t, 0, n)
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// Write comes after read, because write buffers data before it is flushed. It wouldn't know about EOF
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// until some time later. Calling read first forces it to know about EOF now.
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n, err = stream.Write([]byte{1})
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assert.Equal(t, io.EOF, err)
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assert.Equal(t, 0, n)
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}
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}
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