116 lines
3.4 KiB
Go
116 lines
3.4 KiB
Go
package ethash
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import (
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"encoding/json"
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"io/ioutil"
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"math/big"
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"net"
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"net/http"
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"testing"
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"time"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/types"
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)
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// Tests whether remote HTTP servers are correctly notified of new work.
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func TestRemoteNotify(t *testing.T) {
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// Start a simple webserver to capture notifications
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sink := make(chan [3]string)
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server := &http.Server{
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Handler: http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
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blob, err := ioutil.ReadAll(req.Body)
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if err != nil {
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t.Fatalf("failed to read miner notification: %v", err)
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}
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var work [3]string
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if err := json.Unmarshal(blob, &work); err != nil {
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t.Fatalf("failed to unmarshal miner notification: %v", err)
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}
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sink <- work
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}),
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}
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// Open a custom listener to extract its local address
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listener, err := net.Listen("tcp", "localhost:0")
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if err != nil {
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t.Fatalf("failed to open notification server: %v", err)
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}
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defer listener.Close()
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go server.Serve(listener)
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// Create the custom ethash engine
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ethash := NewTester([]string{"http://" + listener.Addr().String()})
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defer ethash.Close()
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// Stream a work task and ensure the notification bubbles out
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header := &types.Header{Number: big.NewInt(1), Difficulty: big.NewInt(100)}
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block := types.NewBlockWithHeader(header)
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ethash.Seal(nil, block, nil)
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select {
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case work := <-sink:
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if want := header.HashNoNonce().Hex(); work[0] != want {
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t.Errorf("work packet hash mismatch: have %s, want %s", work[0], want)
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}
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if want := common.BytesToHash(SeedHash(header.Number.Uint64())).Hex(); work[1] != want {
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t.Errorf("work packet seed mismatch: have %s, want %s", work[1], want)
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}
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target := new(big.Int).Div(new(big.Int).Lsh(big.NewInt(1), 256), header.Difficulty)
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if want := common.BytesToHash(target.Bytes()).Hex(); work[2] != want {
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t.Errorf("work packet target mismatch: have %s, want %s", work[2], want)
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}
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case <-time.After(time.Second):
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t.Fatalf("notification timed out")
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}
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}
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// Tests that pushing work packages fast to the miner doesn't cause any daa race
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// issues in the notifications.
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func TestRemoteMultiNotify(t *testing.T) {
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// Start a simple webserver to capture notifications
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sink := make(chan [3]string, 1024)
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server := &http.Server{
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Handler: http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
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blob, err := ioutil.ReadAll(req.Body)
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if err != nil {
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t.Fatalf("failed to read miner notification: %v", err)
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}
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var work [3]string
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if err := json.Unmarshal(blob, &work); err != nil {
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t.Fatalf("failed to unmarshal miner notification: %v", err)
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}
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sink <- work
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}),
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}
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// Open a custom listener to extract its local address
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listener, err := net.Listen("tcp", "localhost:0")
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if err != nil {
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t.Fatalf("failed to open notification server: %v", err)
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}
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defer listener.Close()
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go server.Serve(listener)
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// Create the custom ethash engine
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ethash := NewTester([]string{"http://" + listener.Addr().String()})
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defer ethash.Close()
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// Stream a lot of work task and ensure all the notifications bubble out
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for i := 0; i < cap(sink); i++ {
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header := &types.Header{Number: big.NewInt(int64(i)), Difficulty: big.NewInt(100)}
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block := types.NewBlockWithHeader(header)
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ethash.Seal(nil, block, nil)
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}
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for i := 0; i < cap(sink); i++ {
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select {
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case <-sink:
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case <-time.After(250 * time.Millisecond):
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t.Fatalf("notification %d timed out", i)
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}
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}
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}
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