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Diffstat (limited to 'p2p/discover/node_test.go')
-rw-r--r--p2p/discover/node_test.go201
1 files changed, 201 insertions, 0 deletions
diff --git a/p2p/discover/node_test.go b/p2p/discover/node_test.go
new file mode 100644
index 000000000..ae82ae4f1
--- /dev/null
+++ b/p2p/discover/node_test.go
@@ -0,0 +1,201 @@
+package discover
+
+import (
+ "math/big"
+ "math/rand"
+ "net"
+ "reflect"
+ "testing"
+ "testing/quick"
+ "time"
+
+ "github.com/ethereum/go-ethereum/crypto"
+)
+
+var (
+ quickrand = rand.New(rand.NewSource(time.Now().Unix()))
+ quickcfg = &quick.Config{MaxCount: 5000, Rand: quickrand}
+)
+
+var parseNodeTests = []struct {
+ rawurl string
+ wantError string
+ wantResult *Node
+}{
+ {
+ rawurl: "http://foobar",
+ wantError: `invalid URL scheme, want "enode"`,
+ },
+ {
+ rawurl: "enode://foobar",
+ wantError: `does not contain node ID`,
+ },
+ {
+ rawurl: "enode://01010101@123.124.125.126:3",
+ wantError: `invalid node ID (wrong length, need 64 hex bytes)`,
+ },
+ {
+ rawurl: "enode://1dd9d65c4552b5eb43d5ad55a2ee3f56c6cbc1c64a5c8d659f51fcd51bace24351232b8d7821617d2b29b54b81cdefb9b3e9c37d7fd5f63270bcc9e1a6f6a439@hostname:3",
+ wantError: `invalid IP address`,
+ },
+ {
+ rawurl: "enode://1dd9d65c4552b5eb43d5ad55a2ee3f56c6cbc1c64a5c8d659f51fcd51bace24351232b8d7821617d2b29b54b81cdefb9b3e9c37d7fd5f63270bcc9e1a6f6a439@127.0.0.1:foo",
+ wantError: `invalid port`,
+ },
+ {
+ rawurl: "enode://1dd9d65c4552b5eb43d5ad55a2ee3f56c6cbc1c64a5c8d659f51fcd51bace24351232b8d7821617d2b29b54b81cdefb9b3e9c37d7fd5f63270bcc9e1a6f6a439@127.0.0.1:3?discport=foo",
+ wantError: `invalid discport in query`,
+ },
+ {
+ rawurl: "enode://1dd9d65c4552b5eb43d5ad55a2ee3f56c6cbc1c64a5c8d659f51fcd51bace24351232b8d7821617d2b29b54b81cdefb9b3e9c37d7fd5f63270bcc9e1a6f6a439@127.0.0.1:52150",
+ wantResult: &Node{
+ ID: MustHexID("0x1dd9d65c4552b5eb43d5ad55a2ee3f56c6cbc1c64a5c8d659f51fcd51bace24351232b8d7821617d2b29b54b81cdefb9b3e9c37d7fd5f63270bcc9e1a6f6a439"),
+ IP: net.ParseIP("127.0.0.1"),
+ DiscPort: 52150,
+ TCPPort: 52150,
+ },
+ },
+ {
+ rawurl: "enode://1dd9d65c4552b5eb43d5ad55a2ee3f56c6cbc1c64a5c8d659f51fcd51bace24351232b8d7821617d2b29b54b81cdefb9b3e9c37d7fd5f63270bcc9e1a6f6a439@[::]:52150",
+ wantResult: &Node{
+ ID: MustHexID("0x1dd9d65c4552b5eb43d5ad55a2ee3f56c6cbc1c64a5c8d659f51fcd51bace24351232b8d7821617d2b29b54b81cdefb9b3e9c37d7fd5f63270bcc9e1a6f6a439"),
+ IP: net.ParseIP("::"),
+ DiscPort: 52150,
+ TCPPort: 52150,
+ },
+ },
+ {
+ rawurl: "enode://1dd9d65c4552b5eb43d5ad55a2ee3f56c6cbc1c64a5c8d659f51fcd51bace24351232b8d7821617d2b29b54b81cdefb9b3e9c37d7fd5f63270bcc9e1a6f6a439@127.0.0.1:52150?discport=223344",
+ wantResult: &Node{
+ ID: MustHexID("0x1dd9d65c4552b5eb43d5ad55a2ee3f56c6cbc1c64a5c8d659f51fcd51bace24351232b8d7821617d2b29b54b81cdefb9b3e9c37d7fd5f63270bcc9e1a6f6a439"),
+ IP: net.ParseIP("127.0.0.1"),
+ DiscPort: 223344,
+ TCPPort: 52150,
+ },
+ },
+}
+
+func TestParseNode(t *testing.T) {
+ for i, test := range parseNodeTests {
+ n, err := ParseNode(test.rawurl)
+ if err == nil && test.wantError != "" {
+ t.Errorf("test %d: got nil error, expected %#q", i, test.wantError)
+ continue
+ }
+ if err != nil && err.Error() != test.wantError {
+ t.Errorf("test %d: got error %#q, expected %#q", i, err.Error(), test.wantError)
+ continue
+ }
+ if !reflect.DeepEqual(n, test.wantResult) {
+ t.Errorf("test %d: result mismatch:\ngot: %#v, want: %#v", i, n, test.wantResult)
+ }
+ }
+}
+
+func TestNodeString(t *testing.T) {
+ for i, test := range parseNodeTests {
+ if test.wantError != "" {
+ continue
+ }
+ str := test.wantResult.String()
+ if str != test.rawurl {
+ t.Errorf("test %d: Node.String() mismatch:\ngot: %s\nwant: %s", i, str, test.rawurl)
+ }
+ }
+}
+
+func TestHexID(t *testing.T) {
+ ref := NodeID{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 128, 106, 217, 182, 31, 165, 174, 1, 67, 7, 235, 220, 150, 66, 83, 173, 205, 159, 44, 10, 57, 42, 161, 26, 188}
+ id1 := MustHexID("0x000000000000000000000000000000000000000000000000000000000000000000000000000000806ad9b61fa5ae014307ebdc964253adcd9f2c0a392aa11abc")
+ id2 := MustHexID("000000000000000000000000000000000000000000000000000000000000000000000000000000806ad9b61fa5ae014307ebdc964253adcd9f2c0a392aa11abc")
+
+ if id1 != ref {
+ t.Errorf("wrong id1\ngot %v\nwant %v", id1[:], ref[:])
+ }
+ if id2 != ref {
+ t.Errorf("wrong id2\ngot %v\nwant %v", id2[:], ref[:])
+ }
+}
+
+func TestNodeID_recover(t *testing.T) {
+ prv := newkey()
+ hash := make([]byte, 32)
+ sig, err := crypto.Sign(hash, prv)
+ if err != nil {
+ t.Fatalf("signing error: %v", err)
+ }
+
+ pub := PubkeyID(&prv.PublicKey)
+ recpub, err := recoverNodeID(hash, sig)
+ if err != nil {
+ t.Fatalf("recovery error: %v", err)
+ }
+ if pub != recpub {
+ t.Errorf("recovered wrong pubkey:\ngot: %v\nwant: %v", recpub, pub)
+ }
+}
+
+func TestNodeID_distcmp(t *testing.T) {
+ distcmpBig := func(target, a, b NodeID) int {
+ tbig := new(big.Int).SetBytes(target[:])
+ abig := new(big.Int).SetBytes(a[:])
+ bbig := new(big.Int).SetBytes(b[:])
+ return new(big.Int).Xor(tbig, abig).Cmp(new(big.Int).Xor(tbig, bbig))
+ }
+ if err := quick.CheckEqual(distcmp, distcmpBig, quickcfg); err != nil {
+ t.Error(err)
+ }
+}
+
+// the random tests is likely to miss the case where they're equal.
+func TestNodeID_distcmpEqual(t *testing.T) {
+ base := NodeID{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}
+ x := NodeID{15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0}
+ if distcmp(base, x, x) != 0 {
+ t.Errorf("distcmp(base, x, x) != 0")
+ }
+}
+
+func TestNodeID_logdist(t *testing.T) {
+ logdistBig := func(a, b NodeID) int {
+ abig, bbig := new(big.Int).SetBytes(a[:]), new(big.Int).SetBytes(b[:])
+ return new(big.Int).Xor(abig, bbig).BitLen()
+ }
+ if err := quick.CheckEqual(logdist, logdistBig, quickcfg); err != nil {
+ t.Error(err)
+ }
+}
+
+// the random tests is likely to miss the case where they're equal.
+func TestNodeID_logdistEqual(t *testing.T) {
+ x := NodeID{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}
+ if logdist(x, x) != 0 {
+ t.Errorf("logdist(x, x) != 0")
+ }
+}
+
+func TestNodeID_randomID(t *testing.T) {
+ // we don't use quick.Check here because its output isn't
+ // very helpful when the test fails.
+ for i := 0; i < quickcfg.MaxCount; i++ {
+ a := gen(NodeID{}, quickrand).(NodeID)
+ dist := quickrand.Intn(len(NodeID{}) * 8)
+ result := randomID(a, dist)
+ actualdist := logdist(result, a)
+
+ if dist != actualdist {
+ t.Log("a: ", a)
+ t.Log("result:", result)
+ t.Fatalf("#%d: distance of result is %d, want %d", i, actualdist, dist)
+ }
+ }
+}
+
+func (NodeID) Generate(rand *rand.Rand, size int) reflect.Value {
+ var id NodeID
+ m := rand.Intn(len(id))
+ for i := len(id) - 1; i > m; i-- {
+ id[i] = byte(rand.Uint32())
+ }
+ return reflect.ValueOf(id)
+}