package zpay32 import ( "bytes" "testing" "github.com/davecgh/go-spew/spew" "github.com/roasbeef/btcd/btcec" "github.com/roasbeef/btcutil" ) var ( testPrivKey = []byte{ 0x81, 0xb6, 0x37, 0xd8, 0xfc, 0xd2, 0xc6, 0xda, 0x63, 0x59, 0xe6, 0x96, 0x31, 0x13, 0xa1, 0x17, 0xd, 0xe7, 0x95, 0xe4, 0xb7, 0x25, 0xb8, 0x4d, 0x1e, 0xb, 0x4c, 0xfd, 0x9e, 0xc5, 0x8c, 0xe9, } _, testPubKey = btcec.PrivKeyFromBytes(btcec.S256(), testPrivKey) testPayHash = [32]byte{ 0xb7, 0x94, 0x38, 0x5f, 0x2d, 0x1e, 0xf7, 0xab, 0x4d, 0x92, 0x73, 0xd1, 0x90, 0x63, 0x81, 0xb4, 0x4f, 0x2f, 0x6f, 0x25, 0x88, 0xa3, 0xef, 0xb9, 0x6a, 0x49, 0x18, 0x83, 0x31, 0x98, 0x47, 0x53, } ) func TestEncodeDecode(t *testing.T) { testPubKey.Curve = nil tests := []struct { version int payReq PaymentRequest encoding string }{ { payReq: PaymentRequest{ Destination: testPubKey, PaymentHash: testPayHash, Amount: btcutil.Amount(50000), }, encoding: "yj8p9uh793syszrd4giu66gtsqprp47cc6cqbdo3" + "qaxi7sr63y6bbphw8bx148zzipg3rh6t1btadpnxf7z1mnfd76" + "hsw1eaoca3ot4uyyyyyyyyydbib998je6o", version: 1, }, } for i, test := range tests { // First ensure encoding the test payment request string in the // specified encoding. encodedReq := Encode(&test.payReq) if encodedReq != test.encoding { t.Fatalf("encoding mismatch for %v: expected %v got %v", spew.Sdump(test.payReq), test.encoding, encodedReq) } // Next ensure the correctness of the transformation in the // other direction. decodedReq, err := Decode(test.encoding) if err != nil { t.Fatalf("unable to decode invoice #%v: %v", i, err) } if !test.payReq.Destination.IsEqual(decodedReq.Destination) { t.Fatalf("test #%v:, destination mismatch for decoded request: "+ "expected %v got %v", i, test.payReq.Destination, decodedReq.Destination) } if !bytes.Equal(test.payReq.PaymentHash[:], decodedReq.PaymentHash[:]) { t.Fatalf("test #%v: payment hash mismatch for decoded request: "+ "expected %x got %x", i, test.payReq.PaymentHash, decodedReq.PaymentHash) } if test.payReq.Amount != decodedReq.Amount { t.Fatalf("test #%v: amount mismatch for decoded request: "+ "expected %x got %x", i, test.payReq.Amount, decodedReq.Amount) } } } func TestChecksumMismatch(t *testing.T) { // We start with a pre-encoded invoice, which has a valid checksum. payReqString := []byte("ycyr8brdjic6oak3bemztc5nupo56y3itq4z5q4qxwb35orf7fmj5phw8bx148zzipg3rh6t1btadpnxf7z1mnfd76hsw1eaoca3ot4uyyyyyyyyydbibt79jo1o") // To modify the resulting checksum, we shift a few of the bytes within the // string itself. payReqString[1] = 98 payReqString[5] = 102 if _, err := Decode(string(payReqString)); err != ErrCheckSumMismatch { t.Fatalf("decode should fail with checksum mismatch, instead: %v", err) } }