143 lines
2.9 KiB
Go
143 lines
2.9 KiB
Go
package git
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import (
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"bytes"
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"fmt"
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"io"
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"io/ioutil"
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"testing"
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"github.com/stretchr/testify/assert"
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)
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// writePackets
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func writePacket(w io.Writer, datas ...[]byte) {
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for _, data := range datas {
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io.WriteString(w, fmt.Sprintf("%04x", len(data)+4))
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w.Write(data)
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}
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io.WriteString(w, fmt.Sprintf("%04x", 0))
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}
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func TestPacketReaderReadsSinglePacketsInOneCall(t *testing.T) {
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var buf bytes.Buffer
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writePacket(&buf, []byte("asdf"))
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pr := &packetReader{proto: newProtocolRW(&buf, nil)}
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data, err := ioutil.ReadAll(pr)
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assert.Nil(t, err)
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assert.Equal(t, []byte("asdf"), data)
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}
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func TestPacketReaderReadsManyPacketsInOneCall(t *testing.T) {
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var buf bytes.Buffer
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writePacket(&buf, []byte("first\n"), []byte("second"))
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pr := &packetReader{proto: newProtocolRW(&buf, nil)}
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data, err := ioutil.ReadAll(pr)
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assert.Nil(t, err)
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assert.Equal(t, []byte("first\nsecond"), data)
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}
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func TestPacketReaderReadsSinglePacketsInMultipleCallsWithUnevenBuffering(t *testing.T) {
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var buf bytes.Buffer
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writePacket(&buf, []byte("asdf"))
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pr := &packetReader{proto: newProtocolRW(&buf, nil)}
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var p1 [3]byte
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var p2 [1]byte
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n1, e1 := pr.Read(p1[:])
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assert.Equal(t, 3, n1)
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assert.Equal(t, []byte("asd"), p1[:])
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assert.Nil(t, e1)
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n2, e2 := pr.Read(p2[:])
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assert.Equal(t, 1, n2)
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assert.Equal(t, []byte("f"), p2[:])
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assert.Equal(t, io.EOF, e2)
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}
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func TestPacketReaderReadsManyPacketsInMultipleCallsWithUnevenBuffering(t *testing.T) {
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var buf bytes.Buffer
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writePacket(&buf, []byte("first"), []byte("second"))
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pr := &packetReader{proto: newProtocolRW(&buf, nil)}
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var p1 [4]byte
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var p2 [7]byte
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var p3 []byte
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n1, e1 := pr.Read(p1[:])
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assert.Equal(t, 4, n1)
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assert.Equal(t, []byte("firs"), p1[:])
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assert.Nil(t, e1)
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n2, e2 := pr.Read(p2[:])
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assert.Equal(t, 7, n2)
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assert.Equal(t, []byte("tsecond"), p2[:])
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assert.Equal(t, nil, e2)
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n3, e3 := pr.Read(p3[:])
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assert.Equal(t, 0, n3)
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assert.Empty(t, p3)
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assert.Equal(t, io.EOF, e3)
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}
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func TestPacketReaderReadsSinglePacketsInMultipleCallsWithEvenBuffering(t *testing.T) {
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var buf bytes.Buffer
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writePacket(&buf, []byte("firstother"))
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pr := &packetReader{proto: newProtocolRW(&buf, nil)}
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var p1 [5]byte
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var p2 [5]byte
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n1, e1 := pr.Read(p1[:])
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assert.Equal(t, 5, n1)
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assert.Equal(t, []byte("first"), p1[:])
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assert.Nil(t, e1)
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n2, e2 := pr.Read(p2[:])
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assert.Equal(t, 5, n2)
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assert.Equal(t, []byte("other"), p2[:])
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assert.Equal(t, io.EOF, e2)
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}
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func TestPacketReaderReadsManyPacketsInMultipleCallsWithEvenBuffering(t *testing.T) {
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var buf bytes.Buffer
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writePacket(&buf, []byte("first"), []byte("other"))
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pr := &packetReader{proto: newProtocolRW(&buf, nil)}
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var p1 [5]byte
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var p2 [5]byte
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var p3 []byte
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n1, e1 := pr.Read(p1[:])
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assert.Equal(t, 5, n1)
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assert.Equal(t, []byte("first"), p1[:])
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assert.Nil(t, e1)
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n2, e2 := pr.Read(p2[:])
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assert.Equal(t, 5, n2)
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assert.Equal(t, []byte("other"), p2[:])
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assert.Equal(t, nil, e2)
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n3, e3 := pr.Read(p3)
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assert.Equal(t, 0, n3)
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assert.Equal(t, io.EOF, e3)
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}
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