134 lines
3.0 KiB
Go
134 lines
3.0 KiB
Go
package p2p
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import (
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"bytes"
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"fmt"
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"io/ioutil"
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"runtime"
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"testing"
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"time"
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"github.com/ethereum/go-ethereum/ethutil"
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)
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func TestNewMsg(t *testing.T) {
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msg := NewMsg(3, 1, "000")
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if msg.Code != 3 {
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t.Errorf("incorrect code %d, want %d", msg.Code)
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}
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if msg.Size != 5 {
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t.Errorf("incorrect size %d, want %d", msg.Size, 5)
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}
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pl, _ := ioutil.ReadAll(msg.Payload)
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expect := []byte{0x01, 0x83, 0x30, 0x30, 0x30}
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if !bytes.Equal(pl, expect) {
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t.Errorf("incorrect payload content, got %x, want %x", pl, expect)
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}
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}
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func TestEncodeDecodeMsg(t *testing.T) {
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msg := NewMsg(3, 1, "000")
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buf := new(bytes.Buffer)
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if err := writeMsg(buf, msg); err != nil {
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t.Fatalf("encodeMsg error: %v", err)
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}
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// t.Logf("encoded: %x", buf.Bytes())
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decmsg, err := readMsg(buf)
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if err != nil {
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t.Fatalf("readMsg error: %v", err)
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}
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if decmsg.Code != 3 {
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t.Errorf("incorrect code %d, want %d", decmsg.Code, 3)
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}
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if decmsg.Size != 5 {
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t.Errorf("incorrect size %d, want %d", decmsg.Size, 5)
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}
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var data struct {
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I uint
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S string
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}
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if err := decmsg.Decode(&data); err != nil {
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t.Fatalf("Decode error: %v", err)
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}
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if data.I != 1 {
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t.Errorf("incorrect data.I: got %v, expected %d", data.I, 1)
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}
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if data.S != "000" {
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t.Errorf("incorrect data.S: got %q, expected %q", data.S, "000")
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}
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}
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func TestDecodeRealMsg(t *testing.T) {
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data := ethutil.Hex2Bytes("2240089100000080f87e8002b5457468657265756d282b2b292f5065657220536572766572204f6e652f76302e372e382f52656c656173652f4c696e75782f672b2bc082765fb84086dd80b7aefd6a6d2e3b93f4f300a86bfb6ef7bdc97cb03f793db6bb")
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msg, err := readMsg(bytes.NewReader(data))
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if msg.Code != 0 {
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t.Errorf("incorrect code %d, want %d", msg.Code, 0)
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}
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}
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func ExampleMsgPipe() {
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rw1, rw2 := MsgPipe()
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go func() {
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rw1.EncodeMsg(8, []byte{0, 0})
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rw1.EncodeMsg(5, []byte{1, 1})
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rw1.Close()
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}()
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for {
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msg, err := rw2.ReadMsg()
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if err != nil {
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break
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}
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var data [1][]byte
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msg.Decode(&data)
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fmt.Printf("msg: %d, %x\n", msg.Code, data[0])
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}
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// Output:
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// msg: 8, 0000
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// msg: 5, 0101
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}
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func TestMsgPipeUnblockWrite(t *testing.T) {
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loop:
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for i := 0; i < 100; i++ {
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rw1, rw2 := MsgPipe()
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done := make(chan struct{})
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go func() {
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if err := rw1.EncodeMsg(1); err == nil {
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t.Error("EncodeMsg returned nil error")
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} else if err != ErrPipeClosed {
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t.Error("EncodeMsg returned wrong error: got %v, want %v", err, ErrPipeClosed)
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}
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close(done)
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}()
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// this call should ensure that EncodeMsg is waiting to
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// deliver sometimes. if this isn't done, Close is likely to
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// be executed before EncodeMsg starts and then we won't test
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// all the cases.
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runtime.Gosched()
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rw2.Close()
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select {
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case <-done:
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case <-time.After(200 * time.Millisecond):
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t.Errorf("write didn't unblock")
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break loop
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}
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}
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}
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// This test should panic if concurrent close isn't implemented correctly.
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func TestMsgPipeConcurrentClose(t *testing.T) {
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rw1, _ := MsgPipe()
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for i := 0; i < 10; i++ {
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go rw1.Close()
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}
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}
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