require "spec_helper"

# Test vectors from https://en.bitcoin.it/wiki/BIP_0032_TestVectors
describe MoneyTree::Master do
  describe "initialize" do
    describe "without a seed" do
      before do
        @master = MoneyTree::Master.new
      end

      it "generates a random seed 32 bytes long" do
        expect(@master.seed.bytesize).to eql(32)
      end

      it "exports the seed in hex format" do
        expect(@master).to respond_to(:seed_hex)
        expect(@master.seed_hex.size).to eql(64)
      end
    end

    context "testnet" do
      before do
        @master = MoneyTree::Master.new network: :bitcoin_testnet
      end

      it "generates testnet address" do
        expect(%w(m n)).to include(@master.to_address(network: :bitcoin_testnet)[0])
      end

      it "generates testnet compressed wif" do
        expect(@master.private_key.to_wif(network: :bitcoin_testnet)[0]).to eql("c")
      end

      it "generates testnet uncompressed wif" do
        expect(@master.private_key.to_wif(compressed: false, network: :bitcoin_testnet)[0]).to eql("9")
      end

      it "generates testnet serialized private address" do
        expect(@master.to_bip32(:private, network: :bitcoin_testnet).slice(0, 4)).to eql("tprv")
      end

      it "generates testnet serialized public address" do
        expect(@master.to_bip32(network: :bitcoin_testnet).slice(0, 4)).to eql("tpub")
      end

      it "imports from testnet serialized private address" do
        node = MoneyTree::Node.from_bip32 "tprv8ZgxMBicQKsPcuN7bfUZqq78UEYapr3Tzmc9NcDXw8BnBJ47dZYr6SusnfYj7vbAYP9CP8ZiD5aVBTUo1yU5QP56mepKVvuEbu8KZQXMKNE"
        expect(node.to_bip32(:private, network: :bitcoin_testnet)).to eql("tprv8ZgxMBicQKsPcuN7bfUZqq78UEYapr3Tzmc9NcDXw8BnBJ47dZYr6SusnfYj7vbAYP9CP8ZiD5aVBTUo1yU5QP56mepKVvuEbu8KZQXMKNE")
      end

      it "imports from testnet serialized public address" do
        node = MoneyTree::Node.from_bip32 "tpubD6NzVbkrYhZ4YA8aUE9bBZTSyHJibBqwDny5urfwDdJc4W8od3y3Ebzy6CqsYn9CCC5P5VQ7CeZYpnT1kX3RPVPysU2rFRvYSj8BCoYYNqT"
        expect(%w(m n)).to include(node.public_key.to_s(network: :bitcoin_testnet)[0])
        expect(node.to_bip32(network: :bitcoin_testnet)).to eql("tpubD6NzVbkrYhZ4YA8aUE9bBZTSyHJibBqwDny5urfwDdJc4W8od3y3Ebzy6CqsYn9CCC5P5VQ7CeZYpnT1kX3RPVPysU2rFRvYSj8BCoYYNqT")
      end

      it "generates testnet subnodes from serialized private address" do
        node = MoneyTree::Node.from_bip32 "tprv8ZgxMBicQKsPcuN7bfUZqq78UEYapr3Tzmc9NcDXw8BnBJ47dZYr6SusnfYj7vbAYP9CP8ZiD5aVBTUo1yU5QP56mepKVvuEbu8KZQXMKNE"
        subnode = node.node_for_path("1/1/1")
        expect(%w(m n)).to include(subnode.public_key.to_s(network: :bitcoin_testnet)[0])
        expect(subnode.to_bip32(:private, network: :bitcoin_testnet).slice(0, 4)).to eql("tprv")
        expect(subnode.to_bip32(network: :bitcoin_testnet).slice(0, 4)).to eql("tpub")
      end

      it "generates testnet subnodes from serialized public address" do
        node = MoneyTree::Node.from_bip32 "tpubD6NzVbkrYhZ4YA8aUE9bBZTSyHJibBqwDny5urfwDdJc4W8od3y3Ebzy6CqsYn9CCC5P5VQ7CeZYpnT1kX3RPVPysU2rFRvYSj8BCoYYNqT"
        subnode = node.node_for_path("1/1/1")
        expect(%w(m n)).to include(subnode.public_key.to_s(network: :bitcoin_testnet)[0])
        expect(subnode.to_bip32(network: :bitcoin_testnet).slice(0, 4)).to eql("tpub")
      end
    end

    describe "Test vector 1" do
      describe "from a seed" do
        before do
          @master = MoneyTree::Master.new seed_hex: "000102030405060708090a0b0c0d0e0f"
        end

        describe "m" do
          it "has an index of 0" do
            expect(@master.index).to eql(0)
          end

          it "is private" do
            expect(@master.is_private?).to eql(true)
          end

          it "has a depth of 0" do
            expect(@master.depth).to eql(0)
          end

          it "generates master node (Master)" do
            expect(@master.to_identifier).to eql("3442193e1bb70916e914552172cd4e2dbc9df811")
            expect(@master.to_fingerprint).to eql("3442193e")
            expect(@master.to_address).to eql("15mKKb2eos1hWa6tisdPwwDC1a5J1y9nma")
            expect(@master.to_p2wpkh_p2sh).to eql("3PpgpssV7mcAGpZRWiCWhodUTnjpoSZg7a")
            expect(@master.to_bech32_address).to eql("bc1qx3ppj0smkuy3d6g525sh9n2w9k7fm7q3x30rtg")
          end

          it "generates a secret key" do
            expect(@master.private_key.to_hex).to eql("e8f32e723decf4051aefac8e2c93c9c5b214313817cdb01a1494b917c8436b35")
            expect(@master.private_key.to_wif).to eql("L52XzL2cMkHxqxBXRyEpnPQZGUs3uKiL3R11XbAdHigRzDozKZeW")
          end

          it "generates a public key" do
            expect(@master.public_key.to_hex).to eql("0339a36013301597daef41fbe593a02cc513d0b55527ec2df1050e2e8ff49c85c2")
          end

          it "generates a chain code" do
            expect(@master.chain_code_hex).to eql("873dff81c02f525623fd1fe5167eac3a55a049de3d314bb42ee227ffed37d508")
          end

          it "generates a serialized private key" do
            expect(@master.to_serialized_hex(:private)).to eql("0488ade4000000000000000000873dff81c02f525623fd1fe5167eac3a55a049de3d314bb42ee227ffed37d50800e8f32e723decf4051aefac8e2c93c9c5b214313817cdb01a1494b917c8436b35")
            expect(@master.to_bip32(:private)).to eql("xprv9s21ZrQH143K3QTDL4LXw2F7HEK3wJUD2nW2nRk4stbPy6cq3jPPqjiChkVvvNKmPGJxWUtg6LnF5kejMRNNU3TGtRBeJgk33yuGBxrMPHi")
          end

          it "generates a serialized public_key" do
            expect(@master.to_serialized_hex).to eql("0488b21e000000000000000000873dff81c02f525623fd1fe5167eac3a55a049de3d314bb42ee227ffed37d5080339a36013301597daef41fbe593a02cc513d0b55527ec2df1050e2e8ff49c85c2")
            expect(@master.to_bip32).to eql("xpub661MyMwAqRbcFtXgS5sYJABqqG9YLmC4Q1Rdap9gSE8NqtwybGhePY2gZ29ESFjqJoCu1Rupje8YtGqsefD265TMg7usUDFdp6W1EGMcet8")
          end
        end

        describe "m/2147483648" do
          before do
            @node = @master.node_for_path "m/2147483648"
          end

          it "has an index of 2147483648" do
            expect(@node.index).to eql(2147483648)
          end

          it "is private" do
            expect(@node.is_private?).to eql(true)
          end

          it "has a depth of 1" do
            expect(@node.depth).to eql(1)
          end

          it "generates subnode" do
            expect(@node.to_identifier).to eql("5c1bd648ed23aa5fd50ba52b2457c11e9e80a6a7")
            expect(@node.to_fingerprint).to eql("5c1bd648")
            expect(@node.to_address).to eql("19Q2WoS5hSS6T8GjhK8KZLMgmWaq4neXrh")
            expect(@node.to_p2wpkh_p2sh).to eql("3AbBmNbPDSzeZKHywDrH3h5v2rL8xGfT7e")
            expect(@node.to_bech32_address).to eql("bc1qtsdavj8dyw49l4gt554jg47pr60gpf48ww2ens")
          end

          it "generates a private key" do
            expect(@node.private_key.to_hex).to eql("edb2e14f9ee77d26dd93b4ecede8d16ed408ce149b6cd80b0715a2d911a0afea")
            expect(@node.private_key.to_wif).to eql("L5BmPijJjrKbiUfG4zbiFKNqkvuJ8usooJmzuD7Z8dkRoTThYnAT")
          end

          it "generates a public key" do
            expect(@node.public_key.to_hex).to eql("035a784662a4a20a65bf6aab9ae98a6c068a81c52e4b032c0fb5400c706cfccc56")
          end

          it "generates a chain code" do
            expect(@node.chain_code_hex).to eql("47fdacbd0f1097043b78c63c20c34ef4ed9a111d980047ad16282c7ae6236141")
          end

          it "generates a serialized private key" do
            expect(@node.to_serialized_hex(:private)).to eql("0488ade4013442193e8000000047fdacbd0f1097043b78c63c20c34ef4ed9a111d980047ad16282c7ae623614100edb2e14f9ee77d26dd93b4ecede8d16ed408ce149b6cd80b0715a2d911a0afea")
            expect(@node.to_bip32(:private)).to eql("xprv9uHRZZhk6KAJC1avXpDAp4MDc3sQKNxDiPvvkX8Br5ngLNv1TxvUxt4cV1rGL5hj6KCesnDYUhd7oWgT11eZG7XnxHrnYeSvkzY7d2bhkJ7")
          end

          it "generates a serialized public_key" do
            expect(@node.to_serialized_hex).to eql("0488b21e013442193e8000000047fdacbd0f1097043b78c63c20c34ef4ed9a111d980047ad16282c7ae6236141035a784662a4a20a65bf6aab9ae98a6c068a81c52e4b032c0fb5400c706cfccc56")
            expect(@node.to_bip32).to eql("xpub68Gmy5EdvgibQVfPdqkBBCHxA5htiqg55crXYuXoQRKfDBFA1WEjWgP6LHhwBZeNK1VTsfTFUHCdrfp1bgwQ9xv5ski8PX9rL2dZXvgGDnw")
          end
        end

        describe "m/-0" do
          before do
            @node = @master.node_for_path "m/-0"
          end

          it "has an index of 2147483648" do
            expect(@node.index).to eql(2147483648)
          end

          it "is private" do
            expect(@node.is_private?).to eql(true)
          end

          it "has a depth of 1" do
            expect(@node.depth).to eql(1)
          end

          it "generates subnode" do
            expect(@node.to_identifier).to eql("5c1bd648ed23aa5fd50ba52b2457c11e9e80a6a7")
            expect(@node.to_fingerprint).to eql("5c1bd648")
            expect(@node.to_address).to eql("19Q2WoS5hSS6T8GjhK8KZLMgmWaq4neXrh")
            expect(@node.to_p2wpkh_p2sh).to eql("3AbBmNbPDSzeZKHywDrH3h5v2rL8xGfT7e")
            expect(@node.to_bech32_address).to eql("bc1qtsdavj8dyw49l4gt554jg47pr60gpf48ww2ens")
          end

          it "generates a private key" do
            expect(@node.private_key.to_hex).to eql("edb2e14f9ee77d26dd93b4ecede8d16ed408ce149b6cd80b0715a2d911a0afea")
            expect(@node.private_key.to_wif).to eql("L5BmPijJjrKbiUfG4zbiFKNqkvuJ8usooJmzuD7Z8dkRoTThYnAT")
          end

          it "generates a public key" do
            expect(@node.public_key.to_hex).to eql("035a784662a4a20a65bf6aab9ae98a6c068a81c52e4b032c0fb5400c706cfccc56")
          end

          it "generates a chain code" do
            expect(@node.chain_code_hex).to eql("47fdacbd0f1097043b78c63c20c34ef4ed9a111d980047ad16282c7ae6236141")
          end

          it "generates a serialized private key" do
            expect(@node.to_serialized_hex(:private)).to eql("0488ade4013442193e8000000047fdacbd0f1097043b78c63c20c34ef4ed9a111d980047ad16282c7ae623614100edb2e14f9ee77d26dd93b4ecede8d16ed408ce149b6cd80b0715a2d911a0afea")
            expect(@node.to_bip32(:private)).to eql("xprv9uHRZZhk6KAJC1avXpDAp4MDc3sQKNxDiPvvkX8Br5ngLNv1TxvUxt4cV1rGL5hj6KCesnDYUhd7oWgT11eZG7XnxHrnYeSvkzY7d2bhkJ7")
          end

          it "generates a serialized public_key" do
            expect(@node.to_serialized_hex).to eql("0488b21e013442193e8000000047fdacbd0f1097043b78c63c20c34ef4ed9a111d980047ad16282c7ae6236141035a784662a4a20a65bf6aab9ae98a6c068a81c52e4b032c0fb5400c706cfccc56")
            expect(@node.to_bip32).to eql("xpub68Gmy5EdvgibQVfPdqkBBCHxA5htiqg55crXYuXoQRKfDBFA1WEjWgP6LHhwBZeNK1VTsfTFUHCdrfp1bgwQ9xv5ski8PX9rL2dZXvgGDnw")
          end
        end

        describe "m/0p" do
          before do
            @node = @master.node_for_path "m/0p"
          end

          it "has an index of 2147483648" do
            expect(@node.index).to eql(2147483648)
          end

          it "is private" do
            expect(@node.is_private?).to eql(true)
          end

          it "has a depth of 1" do
            expect(@node.depth).to eql(1)
          end

          it "generates subnode" do
            expect(@node.to_identifier).to eql("5c1bd648ed23aa5fd50ba52b2457c11e9e80a6a7")
            expect(@node.to_fingerprint).to eql("5c1bd648")
            expect(@node.to_address).to eql("19Q2WoS5hSS6T8GjhK8KZLMgmWaq4neXrh")
            expect(@node.to_p2wpkh_p2sh).to eql("3AbBmNbPDSzeZKHywDrH3h5v2rL8xGfT7e")
            expect(@node.to_bech32_address).to eql("bc1qtsdavj8dyw49l4gt554jg47pr60gpf48ww2ens")
          end

          it "generates a private key" do
            expect(@node.private_key.to_hex).to eql("edb2e14f9ee77d26dd93b4ecede8d16ed408ce149b6cd80b0715a2d911a0afea")
            expect(@node.private_key.to_wif).to eql("L5BmPijJjrKbiUfG4zbiFKNqkvuJ8usooJmzuD7Z8dkRoTThYnAT")
          end

          it "generates a public key" do
            expect(@node.public_key.to_hex).to eql("035a784662a4a20a65bf6aab9ae98a6c068a81c52e4b032c0fb5400c706cfccc56")
          end

          it "generates a chain code" do
            expect(@node.chain_code_hex).to eql("47fdacbd0f1097043b78c63c20c34ef4ed9a111d980047ad16282c7ae6236141")
          end

          it "generates a serialized private key" do
            expect(@node.to_serialized_hex(:private)).to eql("0488ade4013442193e8000000047fdacbd0f1097043b78c63c20c34ef4ed9a111d980047ad16282c7ae623614100edb2e14f9ee77d26dd93b4ecede8d16ed408ce149b6cd80b0715a2d911a0afea")
            expect(@node.to_bip32(:private)).to eql("xprv9uHRZZhk6KAJC1avXpDAp4MDc3sQKNxDiPvvkX8Br5ngLNv1TxvUxt4cV1rGL5hj6KCesnDYUhd7oWgT11eZG7XnxHrnYeSvkzY7d2bhkJ7")
          end

          it "generates a serialized public_key" do
            expect(@node.to_serialized_hex).to eql("0488b21e013442193e8000000047fdacbd0f1097043b78c63c20c34ef4ed9a111d980047ad16282c7ae6236141035a784662a4a20a65bf6aab9ae98a6c068a81c52e4b032c0fb5400c706cfccc56")
            expect(@node.to_bip32).to eql("xpub68Gmy5EdvgibQVfPdqkBBCHxA5htiqg55crXYuXoQRKfDBFA1WEjWgP6LHhwBZeNK1VTsfTFUHCdrfp1bgwQ9xv5ski8PX9rL2dZXvgGDnw")
          end
        end

        describe "m/0p.pub" do
          before do
            @node = @master.node_for_path "m/0p.pub"
          end

          it "has an index of 2147483648" do
            expect(@node.index).to eql(2147483648)
          end

          it "is private" do
            expect(@node.is_private?).to eql(true)
          end

          it "has a depth of 1" do
            expect(@node.depth).to eql(1)
          end

          it "generates subnode" do
            expect(@node.to_identifier).to eql("5c1bd648ed23aa5fd50ba52b2457c11e9e80a6a7")
            expect(@node.to_fingerprint).to eql("5c1bd648")
            expect(@node.to_address).to eql("19Q2WoS5hSS6T8GjhK8KZLMgmWaq4neXrh")
            expect(@node.to_p2wpkh_p2sh).to eql("3AbBmNbPDSzeZKHywDrH3h5v2rL8xGfT7e")
            expect(@node.to_bech32_address).to eql("bc1qtsdavj8dyw49l4gt554jg47pr60gpf48ww2ens")
          end

          it "does not generate a private key" do
            expect(@node.private_key).to be_nil
          end

          it "generates a public key" do
            expect(@node.public_key.to_hex).to eql("035a784662a4a20a65bf6aab9ae98a6c068a81c52e4b032c0fb5400c706cfccc56")
          end

          it "generates a chain code" do
            expect(@node.chain_code_hex).to eql("47fdacbd0f1097043b78c63c20c34ef4ed9a111d980047ad16282c7ae6236141")
          end

          it "does not generate a serialized private key" do
            expect { @node.to_serialized_hex(:private) }.to raise_error(MoneyTree::Node::PrivatePublicMismatch)
          end

          it "generates a serialized public_key" do
            expect(@node.to_serialized_hex).to eql("0488b21e013442193e8000000047fdacbd0f1097043b78c63c20c34ef4ed9a111d980047ad16282c7ae6236141035a784662a4a20a65bf6aab9ae98a6c068a81c52e4b032c0fb5400c706cfccc56")
            expect(@node.to_bip32).to eql("xpub68Gmy5EdvgibQVfPdqkBBCHxA5htiqg55crXYuXoQRKfDBFA1WEjWgP6LHhwBZeNK1VTsfTFUHCdrfp1bgwQ9xv5ski8PX9rL2dZXvgGDnw")
          end
        end

        describe "m/0'/1" do
          before do
            @node = @master.node_for_path "m/0'/1"
          end

          it "has an index of 1" do
            expect(@node.index).to eql(1)
          end

          it "is public" do
            expect(@node.is_private?).to eql(false)
          end

          it "has a depth of 2" do
            expect(@node.depth).to eql(2)
          end

          it "generates subnode" do
            expect(@node.to_identifier).to eql("bef5a2f9a56a94aab12459f72ad9cf8cf19c7bbe")
            expect(@node.to_fingerprint).to eql("bef5a2f9")
            expect(@node.to_address).to eql("1JQheacLPdM5ySCkrZkV66G2ApAXe1mqLj")
            expect(@node.to_p2wpkh_p2sh).to eql("3DymAvEWH38HuzHZ3VwLus673bNZnYwNXu")
            expect(@node.to_bech32_address).to eql("bc1qhm6697d9d2224vfyt8mj4kw03ncec7a7fdafvt")
          end

          it "generates a private key" do
            expect(@node.private_key.to_hex).to eql("3c6cb8d0f6a264c91ea8b5030fadaa8e538b020f0a387421a12de9319dc93368")
            expect(@node.private_key.to_wif).to eql("KyFAjQ5rgrKvhXvNMtFB5PCSKUYD1yyPEe3xr3T34TZSUHycXtMM")
          end

          it "generates a public key" do
            expect(@node.public_key.to_hex).to eql("03501e454bf00751f24b1b489aa925215d66af2234e3891c3b21a52bedb3cd711c")
          end

          it "generates a chain code" do
            expect(@node.chain_code_hex).to eql("2a7857631386ba23dacac34180dd1983734e444fdbf774041578e9b6adb37c19")
          end

          it "generates a serialized private key" do
            expect(@node.to_serialized_hex(:private)).to eql("0488ade4025c1bd648000000012a7857631386ba23dacac34180dd1983734e444fdbf774041578e9b6adb37c19003c6cb8d0f6a264c91ea8b5030fadaa8e538b020f0a387421a12de9319dc93368")
            expect(@node.to_bip32(:private)).to eql("xprv9wTYmMFdV23N2TdNG573QoEsfRrWKQgWeibmLntzniatZvR9BmLnvSxqu53Kw1UmYPxLgboyZQaXwTCg8MSY3H2EU4pWcQDnRnrVA1xe8fs")
          end

          it "generates a serialized public_key" do
            expect(@node.to_serialized_hex).to eql("0488b21e025c1bd648000000012a7857631386ba23dacac34180dd1983734e444fdbf774041578e9b6adb37c1903501e454bf00751f24b1b489aa925215d66af2234e3891c3b21a52bedb3cd711c")
            expect(@node.to_bip32).to eql("xpub6ASuArnXKPbfEwhqN6e3mwBcDTgzisQN1wXN9BJcM47sSikHjJf3UFHKkNAWbWMiGj7Wf5uMash7SyYq527Hqck2AxYysAA7xmALppuCkwQ")
          end
        end

        describe "M/0'/1" do
          before do
            @node = @master.node_for_path "M/0'/1"
          end

          it "has an index of 1" do
            expect(@node.index).to eql(1)
          end

          it "is public" do
            expect(@node.is_private?).to eql(false)
          end

          it "has a depth of 2" do
            expect(@node.depth).to eql(2)
          end

          it "generates subnode" do
            expect(@node.to_identifier).to eql("bef5a2f9a56a94aab12459f72ad9cf8cf19c7bbe")
            expect(@node.to_fingerprint).to eql("bef5a2f9")
            expect(@node.to_address).to eql("1JQheacLPdM5ySCkrZkV66G2ApAXe1mqLj")
            expect(@node.to_p2wpkh_p2sh).to eql("3DymAvEWH38HuzHZ3VwLus673bNZnYwNXu")
            expect(@node.to_bech32_address).to eql("bc1qhm6697d9d2224vfyt8mj4kw03ncec7a7fdafvt")
          end

          it "does not generate a private key" do
            expect(@node.private_key).to be_nil
          end

          it "generates a public key" do
            expect(@node.public_key.to_hex).to eql("03501e454bf00751f24b1b489aa925215d66af2234e3891c3b21a52bedb3cd711c")
          end

          it "generates a chain code" do
            expect(@node.chain_code_hex).to eql("2a7857631386ba23dacac34180dd1983734e444fdbf774041578e9b6adb37c19")
          end

          it "generates a serialized private key" do
            expect { @node.to_serialized_hex(:private) }.to raise_error(MoneyTree::Node::PrivatePublicMismatch)
          end

          it "generates a serialized public_key" do
            expect(@node.to_serialized_hex).to eql("0488b21e025c1bd648000000012a7857631386ba23dacac34180dd1983734e444fdbf774041578e9b6adb37c1903501e454bf00751f24b1b489aa925215d66af2234e3891c3b21a52bedb3cd711c")
            expect(@node.to_bip32).to eql("xpub6ASuArnXKPbfEwhqN6e3mwBcDTgzisQN1wXN9BJcM47sSikHjJf3UFHKkNAWbWMiGj7Wf5uMash7SyYq527Hqck2AxYysAA7xmALppuCkwQ")
          end
        end

        describe "m/0'/1/2p/2" do
          before do
            @node = @master.node_for_path "m/0'/1/2p/2"
          end

          it "has an index of 2" do
            expect(@node.index).to eql(2)
          end

          it "is public" do
            expect(@node.is_private?).to eql(false)
          end

          it "has a depth of 4" do
            expect(@node.depth).to eql(4)
          end

          it "generates subnode" do
            expect(@node.to_identifier).to eql("d880d7d893848509a62d8fb74e32148dac68412f")
            expect(@node.to_fingerprint).to eql("d880d7d8")
            expect(@node.to_address).to eql("1LjmJcdPnDHhNTUgrWyhLGnRDKxQjoxAgt")
            expect(@node.to_p2wpkh_p2sh).to eql("3PxPuCJMQGgkPYArciuUFakdiKC58j3Df6")
            expect(@node.to_bech32_address).to eql("bc1qmzqd0kynsjzsnf3d37m5uvs53kkxssf0dr5zvn")
          end

          it "generates a private key" do
            expect(@node.private_key.to_hex).to eql("0f479245fb19a38a1954c5c7c0ebab2f9bdfd96a17563ef28a6a4b1a2a764ef4")
            expect(@node.private_key.to_wif).to eql("KwjQsVuMjbCP2Zmr3VaFaStav7NvevwjvvkqrWd5Qmh1XVnCteBR")
          end

          it "generates a public key" do
            expect(@node.public_key.to_hex).to eql("02e8445082a72f29b75ca48748a914df60622a609cacfce8ed0e35804560741d29")
          end

          it "generates a chain code" do
            expect(@node.chain_code_hex).to eql("cfb71883f01676f587d023cc53a35bc7f88f724b1f8c2892ac1275ac822a3edd")
          end

          it "generates a serialized private key" do
            expect(@node.to_serialized_hex(:private)).to eql("0488ade404ee7ab90c00000002cfb71883f01676f587d023cc53a35bc7f88f724b1f8c2892ac1275ac822a3edd000f479245fb19a38a1954c5c7c0ebab2f9bdfd96a17563ef28a6a4b1a2a764ef4")
            expect(@node.to_bip32(:private)).to eql("xprvA2JDeKCSNNZky6uBCviVfJSKyQ1mDYahRjijr5idH2WwLsEd4Hsb2Tyh8RfQMuPh7f7RtyzTtdrbdqqsunu5Mm3wDvUAKRHSC34sJ7in334")
          end

          it "generates a serialized public_key" do
            expect(@node.to_serialized_hex).to eql("0488b21e04ee7ab90c00000002cfb71883f01676f587d023cc53a35bc7f88f724b1f8c2892ac1275ac822a3edd02e8445082a72f29b75ca48748a914df60622a609cacfce8ed0e35804560741d29")
            expect(@node.to_bip32).to eql("xpub6FHa3pjLCk84BayeJxFW2SP4XRrFd1JYnxeLeU8EqN3vDfZmbqBqaGJAyiLjTAwm6ZLRQUMv1ZACTj37sR62cfN7fe5JnJ7dh8zL4fiyLHV")
          end
        end

        describe "m/0'/1/2'/2/1000000000" do
          before do
            @node = @master.node_for_path "m/0'/1/2'/2/1000000000"
          end

          it "has an index of 1000000000" do
            expect(@node.index).to eql(1000000000)
          end

          it "is public" do
            expect(@node.is_private?).to eql(false)
          end

          it "has a depth of 2" do
            expect(@node.depth).to eql(5)
          end

          it "generates subnode" do
            expect(@node.to_identifier).to eql("d69aa102255fed74378278c7812701ea641fdf32")
            expect(@node.to_fingerprint).to eql("d69aa102")
            expect(@node.to_address).to eql("1LZiqrop2HGR4qrH1ULZPyBpU6AUP49Uam")
            expect(@node.to_p2wpkh_p2sh).to eql("3BuqWierKkrD7XEeJL4hucMGqVCe5G4WK7")
            expect(@node.to_bech32_address).to eql("bc1q66d2zq39tlkhgduz0rrczfcpafjplhejmtgugz")
          end

          it "generates a private key" do
            expect(@node.private_key.to_hex).to eql("471b76e389e528d6de6d816857e012c5455051cad6660850e58372a6c3e6e7c8")
            expect(@node.private_key.to_wif).to eql("Kybw8izYevo5xMh1TK7aUr7jHFCxXS1zv8p3oqFz3o2zFbhRXHYs")
          end

          it "generates a public key" do
            expect(@node.public_key.to_hex).to eql("022a471424da5e657499d1ff51cb43c47481a03b1e77f951fe64cec9f5a48f7011")
          end

          it "generates a chain code" do
            expect(@node.chain_code_hex).to eql("c783e67b921d2beb8f6b389cc646d7263b4145701dadd2161548a8b078e65e9e")
          end

          it "generates a serialized private key" do
            expect(@node.to_serialized_hex(:private)).to eql("0488ade405d880d7d83b9aca00c783e67b921d2beb8f6b389cc646d7263b4145701dadd2161548a8b078e65e9e00471b76e389e528d6de6d816857e012c5455051cad6660850e58372a6c3e6e7c8")
            expect(@node.to_bip32(:private)).to eql("xprvA41z7zogVVwxVSgdKUHDy1SKmdb533PjDz7J6N6mV6uS3ze1ai8FHa8kmHScGpWmj4WggLyQjgPie1rFSruoUihUZREPSL39UNdE3BBDu76")
          end

          it "generates a serialized public_key" do
            expect(@node.to_serialized_hex).to eql("0488b21e05d880d7d83b9aca00c783e67b921d2beb8f6b389cc646d7263b4145701dadd2161548a8b078e65e9e022a471424da5e657499d1ff51cb43c47481a03b1e77f951fe64cec9f5a48f7011")
            expect(@node.to_bip32).to eql("xpub6H1LXWLaKsWFhvm6RVpEL9P4KfRZSW7abD2ttkWP3SSQvnyA8FSVqNTEcYFgJS2UaFcxupHiYkro49S8yGasTvXEYBVPamhGW6cFJodrTHy")
          end
        end
      end
    end

    describe "Test vector 2" do
      describe "from a seed" do
        before do
          @master = MoneyTree::Master.new seed_hex: "fffcf9f6f3f0edeae7e4e1dedbd8d5d2cfccc9c6c3c0bdbab7b4b1aeaba8a5a29f9c999693908d8a8784817e7b7875726f6c696663605d5a5754514e4b484542"
        end

        describe "m" do
          it "has an index of 0" do
            expect(@master.index).to eql(0)
          end

          it "has a depth of 0" do
            expect(@master.depth).to eql(0)
          end

          it "is private" do
            expect(@master.is_private?).to eql(true)
          end

          it "generates master node (Master)" do
            expect(@master.to_identifier).to eql("bd16bee53961a47d6ad888e29545434a89bdfe95")
            expect(@master.to_fingerprint).to eql("bd16bee5")
            expect(@master.to_address).to eql("1JEoxevbLLG8cVqeoGKQiAwoWbNYSUyYjg")
            expect(@master.to_p2wpkh_p2sh).to eql("3QaGQQTfBvSxXnsggeGxF3zfTAo3uyeREG")
            expect(@master.to_bech32_address).to eql("bc1qh5ttaefevxj866kc3r3f232rf2ymml54ypyvy3")
          end

          it "generates compressed and uncompressed addresses" do
            expect(@master.to_address).to eql("1JEoxevbLLG8cVqeoGKQiAwoWbNYSUyYjg")
            expect(@master.to_p2wpkh_p2sh).to eql("3QaGQQTfBvSxXnsggeGxF3zfTAo3uyeREG")
            expect(@master.to_bech32_address).to eql("bc1qh5ttaefevxj866kc3r3f232rf2ymml54ypyvy3")
            expect(@master.to_address(true)).to eql("1JEoxevbLLG8cVqeoGKQiAwoWbNYSUyYjg")
            expect(@master.to_address(false)).to eql("1AEg9dFEw29kMgaN4BNHALu7AzX5XUfzSU")
          end

          it "generates a secret key" do
            expect(@master.private_key.to_hex).to eql("4b03d6fc340455b363f51020ad3ecca4f0850280cf436c70c727923f6db46c3e")
            expect(@master.private_key.to_wif).to eql("KyjXhyHF9wTphBkfpxjL8hkDXDUSbE3tKANT94kXSyh6vn6nKaoy")
          end

          it "generates a public key" do
            expect(@master.public_key.to_hex).to eql("03cbcaa9c98c877a26977d00825c956a238e8dddfbd322cce4f74b0b5bd6ace4a7")
          end

          it "generates a chain code" do
            expect(@master.chain_code_hex).to eql("60499f801b896d83179a4374aeb7822aaeaceaa0db1f85ee3e904c4defbd9689")
          end

          it "generates a serialized private key" do
            expect(@master.to_serialized_hex(:private)).to eql("0488ade400000000000000000060499f801b896d83179a4374aeb7822aaeaceaa0db1f85ee3e904c4defbd9689004b03d6fc340455b363f51020ad3ecca4f0850280cf436c70c727923f6db46c3e")
            expect(@master.to_bip32(:private)).to eql("xprv9s21ZrQH143K31xYSDQpPDxsXRTUcvj2iNHm5NUtrGiGG5e2DtALGdso3pGz6ssrdK4PFmM8NSpSBHNqPqm55Qn3LqFtT2emdEXVYsCzC2U")
          end

          it "generates a serialized public_key" do
            expect(@master.to_serialized_hex).to eql("0488b21e00000000000000000060499f801b896d83179a4374aeb7822aaeaceaa0db1f85ee3e904c4defbd968903cbcaa9c98c877a26977d00825c956a238e8dddfbd322cce4f74b0b5bd6ace4a7")
            expect(@master.to_bip32).to eql("xpub661MyMwAqRbcFW31YEwpkMuc5THy2PSt5bDMsktWQcFF8syAmRUapSCGu8ED9W6oDMSgv6Zz8idoc4a6mr8BDzTJY47LJhkJ8UB7WEGuduB")
          end
        end

        describe "m/0 (testing imported private key)" do
          before do
            @master = MoneyTree::Master.new private_key: @master.private_key, chain_code: @master.chain_code
            @node = @master.node_for_path "m/0"
          end

          it "has an index of 0" do
            expect(@node.index).to eql(0)
          end

          it "has a depth of 1" do
            expect(@node.depth).to eql(1)
          end

          it "is public" do
            expect(@node.is_private?).to eql(false)
          end

          it "generates subnode" do
            expect(@node.to_identifier).to eql("5a61ff8eb7aaca3010db97ebda76121610b78096")
            expect(@node.to_fingerprint).to eql("5a61ff8e")
            expect(@node.to_address).to eql("19EuDJdgfRkwCmRzbzVBHZWQG9QNWhftbZ")
            expect(@node.to_p2wpkh_p2sh).to eql("39cFMGtVaEw6AfksMcaLpu8frZxmqngh8c")
            expect(@node.to_bech32_address).to eql("bc1qtfsllr4h4t9rqyxmjl4a5asjzcgt0qykp3q3we")
          end

          it "generates a private key" do
            expect(@node.private_key.to_hex).to eql("abe74a98f6c7eabee0428f53798f0ab8aa1bd37873999041703c742f15ac7e1e")
            expect(@node.private_key.to_wif).to eql("L2ysLrR6KMSAtx7uPqmYpoTeiRzydXBattRXjXz5GDFPrdfPzKbj")
          end

          it "generates a public key" do
            expect(@node.public_key.to_hex).to eql("02fc9e5af0ac8d9b3cecfe2a888e2117ba3d089d8585886c9c826b6b22a98d12ea")
          end

          it "generates a chain code" do
            expect(@node.chain_code_hex).to eql("f0909affaa7ee7abe5dd4e100598d4dc53cd709d5a5c2cac40e7412f232f7c9c")
          end

          it "generates a serialized private key" do
            expect(@node.to_serialized_hex(:private)).to eql("0488ade401bd16bee500000000f0909affaa7ee7abe5dd4e100598d4dc53cd709d5a5c2cac40e7412f232f7c9c00abe74a98f6c7eabee0428f53798f0ab8aa1bd37873999041703c742f15ac7e1e")
            expect(@node.to_bip32(:private)).to eql("xprv9vHkqa6EV4sPZHYqZznhT2NPtPCjKuDKGY38FBWLvgaDx45zo9WQRUT3dKYnjwih2yJD9mkrocEZXo1ex8G81dwSM1fwqWpWkeS3v86pgKt")
          end

          it "generates a serialized public_key" do
            expect(@node.to_serialized_hex).to eql("0488b21e01bd16bee500000000f0909affaa7ee7abe5dd4e100598d4dc53cd709d5a5c2cac40e7412f232f7c9c02fc9e5af0ac8d9b3cecfe2a888e2117ba3d089d8585886c9c826b6b22a98d12ea")
            expect(@node.to_bip32).to eql("xpub69H7F5d8KSRgmmdJg2KhpAK8SR3DjMwAdkxj3ZuxV27CprR9LgpeyGmXUbC6wb7ERfvrnKZjXoUmmDznezpbZb7ap6r1D3tgFxHmwMkQTPH")
          end
        end

        describe "M/0 (testing import of public key)" do
          before do
            @master = MoneyTree::Master.new public_key: "03cbcaa9c98c877a26977d00825c956a238e8dddfbd322cce4f74b0b5bd6ace4a7", chain_code: @master.chain_code
            @node = @master.node_for_path "M/0"
          end

          it "has an index of 0" do
            expect(@node.index).to eql(0)
          end

          it "has a depth of 1" do
            expect(@node.depth).to eql(1)
          end

          it "is public" do
            expect(@node.is_private?).to eql(false)
          end

          it "generates subnode" do
            expect(@node.to_identifier).to eql("5a61ff8eb7aaca3010db97ebda76121610b78096")
            expect(@node.to_fingerprint).to eql("5a61ff8e")
            expect(@node.to_address).to eql("19EuDJdgfRkwCmRzbzVBHZWQG9QNWhftbZ")
            expect(@node.to_p2wpkh_p2sh).to eql("39cFMGtVaEw6AfksMcaLpu8frZxmqngh8c")
            expect(@node.to_bech32_address).to eql("bc1qtfsllr4h4t9rqyxmjl4a5asjzcgt0qykp3q3we")
          end

          it "does not generate a private key" do
            expect(@node.private_key).to be_nil
          end

          it "generates a public key" do
            expect(@node.public_key.to_hex).to eql("02fc9e5af0ac8d9b3cecfe2a888e2117ba3d089d8585886c9c826b6b22a98d12ea")
          end

          it "generates a chain code" do
            expect(@node.chain_code_hex).to eql("f0909affaa7ee7abe5dd4e100598d4dc53cd709d5a5c2cac40e7412f232f7c9c")
          end

          it "does not generate a serialized private key" do
            expect { @node.to_serialized_hex(:private) }.to raise_error(MoneyTree::Node::PrivatePublicMismatch)
            expect { @node.to_bip32(:private) }.to raise_error(MoneyTree::Node::PrivatePublicMismatch)
          end

          it "generates a serialized public_key" do
            expect(@node.to_serialized_hex).to eql("0488b21e01bd16bee500000000f0909affaa7ee7abe5dd4e100598d4dc53cd709d5a5c2cac40e7412f232f7c9c02fc9e5af0ac8d9b3cecfe2a888e2117ba3d089d8585886c9c826b6b22a98d12ea")
            expect(@node.to_bip32).to eql("xpub69H7F5d8KSRgmmdJg2KhpAK8SR3DjMwAdkxj3ZuxV27CprR9LgpeyGmXUbC6wb7ERfvrnKZjXoUmmDznezpbZb7ap6r1D3tgFxHmwMkQTPH")
          end
        end

        describe "m/0/2147483647'" do
          before do
            @node = @master.node_for_path "m/0/2147483647'"
          end

          it "has an index of 2147483647" do
            expect(@node.index).to eql(4294967295)
          end

          it "has a depth of 2" do
            expect(@node.depth).to eql(2)
          end

          it "is private" do
            expect(@node.is_private?).to eql(true)
          end

          it "generates subnode" do
            expect(@node.to_identifier).to eql("d8ab493736da02f11ed682f88339e720fb0379d1")
            expect(@node.to_fingerprint).to eql("d8ab4937")
            expect(@node.to_address).to eql("1Lke9bXGhn5VPrBuXgN12uGUphrttUErmk")
            expect(@node.to_p2wpkh_p2sh).to eql("39oYp2KWMueN9LSVyDGUGAeDeAgdj43suV")
            expect(@node.to_bech32_address).to eql("bc1qmz45jdekmgp0z8kkstugxw08yrasx7w3dse4fe")
          end

          it "generates a private key" do
            expect(@node.private_key.to_hex).to eql("877c779ad9687164e9c2f4f0f4ff0340814392330693ce95a58fe18fd52e6e93")
            expect(@node.private_key.to_wif).to eql("L1m5VpbXmMp57P3knskwhoMTLdhAAaXiHvnGLMribbfwzVRpz2Sr")
          end

          it "generates a public key" do
            expect(@node.public_key.to_hex).to eql("03c01e7425647bdefa82b12d9bad5e3e6865bee0502694b94ca58b666abc0a5c3b")
          end

          it "generates a chain code" do
            expect(@node.chain_code_hex).to eql("be17a268474a6bb9c61e1d720cf6215e2a88c5406c4aee7b38547f585c9a37d9")
          end

          it "generates a serialized private key" do
            expect(@node.to_serialized_hex(:private)).to eql("0488ade4025a61ff8effffffffbe17a268474a6bb9c61e1d720cf6215e2a88c5406c4aee7b38547f585c9a37d900877c779ad9687164e9c2f4f0f4ff0340814392330693ce95a58fe18fd52e6e93")
            expect(@node.to_bip32(:private)).to eql("xprv9wSp6B7kry3Vj9m1zSnLvN3xH8RdsPP1Mh7fAaR7aRLcQMKTR2vidYEeEg2mUCTAwCd6vnxVrcjfy2kRgVsFawNzmjuHc2YmYRmagcEPdU9")
          end

          it "generates a serialized public_key" do
            expect(@node.to_serialized_hex).to eql("0488b21e025a61ff8effffffffbe17a268474a6bb9c61e1d720cf6215e2a88c5406c4aee7b38547f585c9a37d903c01e7425647bdefa82b12d9bad5e3e6865bee0502694b94ca58b666abc0a5c3b")
            expect(@node.to_bip32).to eql("xpub6ASAVgeehLbnwdqV6UKMHVzgqAG8Gr6riv3Fxxpj8ksbH9ebxaEyBLZ85ySDhKiLDBrQSARLq1uNRts8RuJiHjaDMBU4Zn9h8LZNnBC5y4a")
          end
        end

        describe "m/0/2147483647'/1" do
          before do
            @node = @master.node_for_path "m/0/2147483647'/1"
          end

          it "has an index of 1" do
            expect(@node.index).to eql(1)
          end

          it "has a depth of 3" do
            expect(@node.depth).to eql(3)
          end

          it "is private" do
            expect(@node.is_private?).to eql(false)
          end

          it "generates subnode" do
            expect(@node.to_identifier).to eql("78412e3a2296a40de124307b6485bd19833e2e34")
            expect(@node.to_fingerprint).to eql("78412e3a")
            expect(@node.to_address).to eql("1BxrAr2pHpeBheusmd6fHDP2tSLAUa3qsW")
            expect(@node.to_p2wpkh_p2sh).to eql("3McFiyStLZ4GzqN9Hx7rG7iyVjaX5Hf7VH")
            expect(@node.to_bech32_address).to eql("bc1q0pqjuw3zj6jqmcfyxpakfpdarxpnut35gr8lsl")
          end

          it "generates a private key" do
            expect(@node.private_key.to_hex).to eql("704addf544a06e5ee4bea37098463c23613da32020d604506da8c0518e1da4b7")
            expect(@node.private_key.to_wif).to eql("KzyzXnznxSv249b4KuNkBwowaN3akiNeEHy5FWoPCJpStZbEKXN2")
          end

          it "generates a public key" do
            expect(@node.public_key.to_hex).to eql("03a7d1d856deb74c508e05031f9895dab54626251b3806e16b4bd12e781a7df5b9")
          end

          it "generates a chain code" do
            expect(@node.chain_code_hex).to eql("f366f48f1ea9f2d1d3fe958c95ca84ea18e4c4ddb9366c336c927eb246fb38cb")
          end

          it "generates a serialized private key" do
            expect(@node.to_serialized_hex(:private)).to eql("0488ade403d8ab493700000001f366f48f1ea9f2d1d3fe958c95ca84ea18e4c4ddb9366c336c927eb246fb38cb00704addf544a06e5ee4bea37098463c23613da32020d604506da8c0518e1da4b7")
            expect(@node.to_bip32(:private)).to eql("xprv9zFnWC6h2cLgpmSA46vutJzBcfJ8yaJGg8cX1e5StJh45BBciYTRXSd25UEPVuesF9yog62tGAQtHjXajPPdbRCHuWS6T8XA2ECKADdw4Ef")
          end

          it "generates a serialized public_key" do
            expect(@node.to_serialized_hex).to eql("0488b21e03d8ab493700000001f366f48f1ea9f2d1d3fe958c95ca84ea18e4c4ddb9366c336c927eb246fb38cb03a7d1d856deb74c508e05031f9895dab54626251b3806e16b4bd12e781a7df5b9")
            expect(@node.to_bip32).to eql("xpub6DF8uhdarytz3FWdA8TvFSvvAh8dP3283MY7p2V4SeE2wyWmG5mg5EwVvmdMVCQcoNJxGoWaU9DCWh89LojfZ537wTfunKau47EL2dhHKon")
          end
        end

        describe "m/0/2147483647p/1/2147483646p" do
          before do
            @node = @master.node_for_path "m/0/2147483647p/1/2147483646p"
          end

          it "has an index of 4294967294" do
            expect(@node.index).to eql(4294967294)
          end

          it "has a depth of 4" do
            expect(@node.depth).to eql(4)
          end

          it "is private" do
            expect(@node.is_private?).to eql(true)
          end

          it "generates subnode" do
            expect(@node.to_identifier).to eql("31a507b815593dfc51ffc7245ae7e5aee304246e")
            expect(@node.to_fingerprint).to eql("31a507b8")
            expect(@node.to_address).to eql("15XVotxCAV7sRx1PSCkQNsGw3W9jT9A94R")
            expect(@node.to_p2wpkh_p2sh).to eql("35aip4nbX3wM2V3NMxHgPz1wEUQ2T7BJPY")
            expect(@node.to_bech32_address).to eql("bc1qxxjs0wq4ty7lc50lcuj94el94m3sgfrwfvky9p")
          end

          it "generates a private key" do
            expect(@node.private_key.to_hex).to eql("f1c7c871a54a804afe328b4c83a1c33b8e5ff48f5087273f04efa83b247d6a2d")
            expect(@node.private_key.to_wif).to eql("L5KhaMvPYRW1ZoFmRjUtxxPypQ94m6BcDrPhqArhggdaTbbAFJEF")
          end

          it "generates a public key" do
            expect(@node.public_key.to_hex).to eql("02d2b36900396c9282fa14628566582f206a5dd0bcc8d5e892611806cafb0301f0")
          end

          it "generates a chain code" do
            expect(@node.chain_code_hex).to eql("637807030d55d01f9a0cb3a7839515d796bd07706386a6eddf06cc29a65a0e29")
          end

          it "generates a serialized private key" do
            expect(@node.to_serialized_hex(:private)).to eql("0488ade40478412e3afffffffe637807030d55d01f9a0cb3a7839515d796bd07706386a6eddf06cc29a65a0e2900f1c7c871a54a804afe328b4c83a1c33b8e5ff48f5087273f04efa83b247d6a2d")
            expect(@node.to_bip32(:private)).to eql("xprvA1RpRA33e1JQ7ifknakTFpgNXPmW2YvmhqLQYMmrj4xJXXWYpDPS3xz7iAxn8L39njGVyuoseXzU6rcxFLJ8HFsTjSyQbLYnMpCqE2VbFWc")
          end

          it "generates a serialized public_key" do
            expect(@node.to_serialized_hex).to eql("0488b21e0478412e3afffffffe637807030d55d01f9a0cb3a7839515d796bd07706386a6eddf06cc29a65a0e2902d2b36900396c9282fa14628566582f206a5dd0bcc8d5e892611806cafb0301f0")
            expect(@node.to_bip32).to eql("xpub6ERApfZwUNrhLCkDtcHTcxd75RbzS1ed54G1LkBUHQVHQKqhMkhgbmJbZRkrgZw4koxb5JaHWkY4ALHY2grBGRjaDMzQLcgJvLJuZZvRcEL")
          end
        end

        describe "m/0/2147483647p/1/2147483646p/2" do
          before do
            @node = @master.node_for_path "m/0/2147483647p/1/2147483646p/2"
          end

          it "has an index of 2" do
            expect(@node.index).to eql(2)
          end

          it "has a depth of 4" do
            expect(@node.depth).to eql(5)
          end

          it "is public" do
            expect(@node.is_private?).to eql(false)
          end

          it "generates subnode" do
            expect(@node.to_identifier).to eql("26132fdbe7bf89cbc64cf8dafa3f9f88b8666220")
            expect(@node.to_fingerprint).to eql("26132fdb")
            expect(@node.to_address).to eql("14UKfRV9ZPUp6ZC9PLhqbRtxdihW9em3xt")
            expect(@node.to_p2wpkh_p2sh).to eql("3NUwiFMvp3CN1MYXkUjkoboYk7mHuQTTUn")
            expect(@node.to_bech32_address).to eql("bc1qycfjlkl8h7yuh3jvlrd050ul3zuxvc3qphdmd3")
          end

          it "generates a private key" do
            expect(@node.private_key.to_hex).to eql("bb7d39bdb83ecf58f2fd82b6d918341cbef428661ef01ab97c28a4842125ac23")
            expect(@node.private_key.to_wif).to eql("L3WAYNAZPxx1fr7KCz7GN9nD5qMBnNiqEJNJMU1z9MMaannAt4aK")
          end

          it "generates a public key" do
            expect(@node.public_key.to_hex).to eql("024d902e1a2fc7a8755ab5b694c575fce742c48d9ff192e63df5193e4c7afe1f9c")
          end

          it "generates a chain code" do
            expect(@node.chain_code_hex).to eql("9452b549be8cea3ecb7a84bec10dcfd94afe4d129ebfd3b3cb58eedf394ed271")
          end

          it "generates a serialized private key" do
            expect(@node.to_serialized_hex(:private)).to eql("0488ade40531a507b8000000029452b549be8cea3ecb7a84bec10dcfd94afe4d129ebfd3b3cb58eedf394ed27100bb7d39bdb83ecf58f2fd82b6d918341cbef428661ef01ab97c28a4842125ac23")
            expect(@node.to_bip32(:private)).to eql("xprvA2nrNbFZABcdryreWet9Ea4LvTJcGsqrMzxHx98MMrotbir7yrKCEXw7nadnHM8Dq38EGfSh6dqA9QWTyefMLEcBYJUuekgW4BYPJcr9E7j")
          end

          it "generates a serialized public_key" do
            expect(@node.to_serialized_hex).to eql("0488b21e0531a507b8000000029452b549be8cea3ecb7a84bec10dcfd94afe4d129ebfd3b3cb58eedf394ed271024d902e1a2fc7a8755ab5b694c575fce742c48d9ff192e63df5193e4c7afe1f9c")
            expect(@node.to_bip32).to eql("xpub6FnCn6nSzZAw5Tw7cgR9bi15UV96gLZhjDstkXXxvCLsUXBGXPdSnLFbdpq8p9HmGsApME5hQTZ3emM2rnY5agb9rXpVGyy3bdW6EEgAtqt")
          end
        end
      end
    end

    describe "Test vector 3" do
      describe "from a seed" do
        before do
          @master = MoneyTree::Master.new seed_hex: "4b381541583be4423346c643850da4b320e46a87ae3d2a4e6da11eba819cd4acba45d239319ac14f863b8d5ab5a0d0c64d2e8a1e7d1457df2e5a3c51c73235be"
        end

        describe "m" do
          it "has an index of 0" do
            expect(@master.index).to eql(0)
          end

          it "is private" do
            expect(@master.is_private?).to eql(true)
          end

          it "has a depth of 0" do
            expect(@master.depth).to eql(0)
          end

          it "generates master node (Master)" do
            expect(@master.to_identifier).to eql("41d63b50d8dd5e730cdf4c79a56fc929a757c548")
            expect(@master.to_fingerprint).to eql("41d63b50")
            expect(@master.to_address).to eql("1717ZYpXhZW5CqAbWSjDJbCey3FyKUmCSf")
            expect(@master.to_p2wpkh_p2sh).to eql("3B4MJ7rJ9c5UfgKMfwqeB4Uh7kGNwqQhK6")
            expect(@master.to_bech32_address).to eql("bc1qg8trk5xcm408xrxlf3u62m7f9xn4032gl36vmu")
          end

          it "generates a secret key" do
            expect(@master.private_key.to_hex).to eql("00ddb80b067e0d4993197fe10f2657a844a384589847602d56f0c629c81aae32")
            expect(@master.private_key.to_wif).to eql("KwFPqAq9SKx1sPg15Qk56mqkHwrfGPuywtLUxoWPkiTSBoxCs8am")
          end

          it "generates a public key" do
            expect(@master.public_key.to_hex).to eql("03683af1ba5743bdfc798cf814efeeab2735ec52d95eced528e692b8e34c4e5669")
          end

          it "generates a chain code" do
            expect(@master.chain_code_hex).to eql("01d28a3e53cffa419ec122c968b3259e16b65076495494d97cae10bbfec3c36f")
          end

          it "generates a serialized private key" do
            expect(@master.to_serialized_hex(:private)).to eql("0488ade400000000000000000001d28a3e53cffa419ec122c968b3259e16b65076495494d97cae10bbfec3c36f0000ddb80b067e0d4993197fe10f2657a844a384589847602d56f0c629c81aae32")
            expect(@master.to_bip32(:private)).to eql("xprv9s21ZrQH143K25QhxbucbDDuQ4naNntJRi4KUfWT7xo4EKsHt2QJDu7KXp1A3u7Bi1j8ph3EGsZ9Xvz9dGuVrtHHs7pXeTzjuxBrCmmhgC6")
          end

          it "generates a serialized public_key" do
            expect(@master.to_serialized_hex).to eql("0488b21e00000000000000000001d28a3e53cffa419ec122c968b3259e16b65076495494d97cae10bbfec3c36f03683af1ba5743bdfc798cf814efeeab2735ec52d95eced528e692b8e34c4e5669")
            expect(@master.to_bip32).to eql("xpub661MyMwAqRbcEZVB4dScxMAdx6d4nFc9nvyvH3v4gJL378CSRZiYmhRoP7mBy6gSPSCYk6SzXPTf3ND1cZAceL7SfJ1Z3GC8vBgp2epUt13")
          end
        end

        describe "m/0p" do
          before do
            @node = @master.node_for_path "m/0p"
          end

          it "has an index of 2147483648" do
            expect(@node.index).to eql(2147483648)
          end

          it "is private" do
            expect(@node.is_private?).to eql(true)
          end

          it "has a depth of 1" do
            expect(@node.depth).to eql(1)
          end

          it "generates subnode" do
            expect(@node.to_identifier).to eql("c61368bb50e066acd95bd04a0b23d3837fb75698")
            expect(@node.to_fingerprint).to eql("c61368bb")
            expect(@node.to_address).to eql("1K4L3YxEwg8HkSEapM4iSiGuR6HeQ53KPX")
            expect(@node.to_p2wpkh_p2sh).to eql("34WHhyr9rrVxVVuYpDqwUmd4yXdWFoKxLf")
            expect(@node.to_bech32_address).to eql("bc1qccfk3w6supn2ek2m6p9qkg7nsdlmw45cj06e96")
          end

          it "generates a private key" do
            expect(@node.private_key.to_hex).to eql("491f7a2eebc7b57028e0d3faa0acda02e75c33b03c48fb288c41e2ea44e1daef")
            expect(@node.private_key.to_wif).to eql("KyfrPaeirL5yYAoZvfzyoKXSdszeLqg5vb6dNy9ymvjzZrMZY8GW")
          end

          it "generates a public key" do
            expect(@node.public_key.to_hex).to eql("026557fdda1d5d43d79611f784780471f086d58e8126b8c40acb82272a7712e7f2")
          end

          it "generates a chain code" do
            expect(@node.chain_code_hex).to eql("e5fea12a97b927fc9dc3d2cb0d1ea1cf50aa5a1fdc1f933e8906bb38df3377bd")
          end

          it "generates a serialized private key" do
            expect(@node.to_serialized_hex(:private)).to eql("0488ade40141d63b5080000000e5fea12a97b927fc9dc3d2cb0d1ea1cf50aa5a1fdc1f933e8906bb38df3377bd00491f7a2eebc7b57028e0d3faa0acda02e75c33b03c48fb288c41e2ea44e1daef")
            expect(@node.to_bip32(:private)).to eql("xprv9uPDJpEQgRQfDcW7BkF7eTya6RPxXeJCqCJGHuCJ4GiRVLzkTXBAJMu2qaMWPrS7AANYqdq6vcBcBUdJCVVFceUvJFjaPdGZ2y9WACViL4L")
          end

          it "generates a serialized public_key" do
            expect(@node.to_serialized_hex).to eql("0488b21e0141d63b5080000000e5fea12a97b927fc9dc3d2cb0d1ea1cf50aa5a1fdc1f933e8906bb38df3377bd026557fdda1d5d43d79611f784780471f086d58e8126b8c40acb82272a7712e7f2")
            expect(@node.to_bip32).to eql("xpub68NZiKmJWnxxS6aaHmn81bvJeTESw724CRDs6HbuccFQN9Ku14VQrADWgqbhhTHBaohPX4CjNLf9fq9MYo6oDaPPLPxSb7gwQN3ih19Zm4Y")
          end
        end
      end
    end

    describe "Test vector 4" do
      describe "from a seed" do
        before do
          @master = MoneyTree::Master.new seed_hex: "3ddd5602285899a946114506157c7997e5444528f3003f6134712147db19b678"
        end

        describe "m" do
          it "has an index of 0" do
            expect(@master.index).to eql(0)
          end

          it "is private" do
            expect(@master.is_private?).to eql(true)
          end

          it "has a depth of 0" do
            expect(@master.depth).to eql(0)
          end

          it "generates master node (Master)" do
            expect(@master.to_identifier).to eql("ad85d95573bc609b98f2af5e06e150351f818ba9")
            expect(@master.to_fingerprint).to eql("ad85d955")
            expect(@master.to_address).to eql("1GpWFBBE37FQumRkrVUL6HB1bqSWCuYsKt")
            expect(@master.to_p2wpkh_p2sh).to eql("33Koj9buBXM1UsNZjNdHSNeBCjxRLqVyRE")
            expect(@master.to_bech32_address).to eql("bc1q4kzaj4tnh3sfhx8j4a0qdc2sx50crzaf2ka04w")
          end

          it "generates a secret key" do
            expect(@master.private_key.to_hex).to eql("12c0d59c7aa3a10973dbd3f478b65f2516627e3fe61e00c345be9a477ad2e215")
            expect(@master.private_key.to_wif).to eql("KwrAWXgyy1L75ZBRp1PzHj2aWBoYcddgrEMfF6iBJFuw8adwRNLu")
          end

          it "generates a public key" do
            expect(@master.public_key.to_hex).to eql("026f6fedc9240f61daa9c7144b682a430a3a1366576f840bf2d070101fcbc9a02d")
          end

          it "generates a chain code" do
            expect(@master.chain_code_hex).to eql("d0c8a1f6edf2500798c3e0b54f1b56e45f6d03e6076abd36e5e2f54101e44ce6")
          end

          it "generates a serialized private key" do
            expect(@master.to_serialized_hex(:private)).to eql("0488ade4000000000000000000d0c8a1f6edf2500798c3e0b54f1b56e45f6d03e6076abd36e5e2f54101e44ce60012c0d59c7aa3a10973dbd3f478b65f2516627e3fe61e00c345be9a477ad2e215")
            expect(@master.to_bip32(:private)).to eql("xprv9s21ZrQH143K48vGoLGRPxgo2JNkJ3J3fqkirQC2zVdk5Dgd5w14S7fRDyHH4dWNHUgkvsvNDCkvAwcSHNAQwhwgNMgZhLtQC63zxwhQmRv")
          end

          it "generates a serialized public_key" do
            expect(@master.to_serialized_hex).to eql("0488b21e000000000000000000d0c8a1f6edf2500798c3e0b54f1b56e45f6d03e6076abd36e5e2f54101e44ce6026f6fedc9240f61daa9c7144b682a430a3a1366576f840bf2d070101fcbc9a02d")
            expect(@master.to_bip32).to eql("xpub661MyMwAqRbcGczjuMoRm6dXaLDEhW1u34gKenbeYqAix21mdUKJyuyu5F1rzYGVxyL6tmgBUAEPrEz92mBXjByMRiJdba9wpnN37RLLAXa")
          end
        end

        describe "m/0p" do
          before do
            @node = @master.node_for_path "m/0p"
          end

          it "has an index of 2147483648" do
            expect(@node.index).to eql(2147483648)
          end

          it "is private" do
            expect(@node.is_private?).to eql(true)
          end

          it "has a depth of 1" do
            expect(@node.depth).to eql(1)
          end

          it "generates subnode" do
            expect(@node.to_identifier).to eql("cfa61281b1762be25710658757221a6437cbcdd6")
            expect(@node.to_fingerprint).to eql("cfa61281")
            expect(@node.to_address).to eql("1KvwpccVR6CsN3ve2LZpxkSZ5od5262b75")
            expect(@node.to_p2wpkh_p2sh).to eql("369UTJMek2ve1ANb18R91S9638scFYWJm3")
            expect(@node.to_bech32_address).to eql("bc1qe7np9qd3wc47y4csvkr4wgs6vsmuhnwkve50q9")
          end

          it "generates a private key" do
            expect(@node.private_key.to_hex).to eql("00d948e9261e41362a688b916f297121ba6bfb2274a3575ac0e456551dfd7f7e")
            expect(@node.private_key.to_wif).to eql("KwFMsuZ3pmk7ebtbTiPirTpdcPkS6wvnSazU3bvixwiCw1bNQLhG")
          end

          it "generates a public key" do
            expect(@node.public_key.to_hex).to eql("039382d2b6003446792d2917f7ac4b3edf079a1a94dd4eb010dc25109dda680a9d")
          end

          it "generates a chain code" do
            expect(@node.chain_code_hex).to eql("cdc0f06456a14876c898790e0b3b1a41c531170aec69da44ff7b7265bfe7743b")
          end

          it "generates a serialized private key" do
            expect(@node.to_serialized_hex(:private)).to eql("0488ade401ad85d95580000000cdc0f06456a14876c898790e0b3b1a41c531170aec69da44ff7b7265bfe7743b0000d948e9261e41362a688b916f297121ba6bfb2274a3575ac0e456551dfd7f7e")
            expect(@node.to_bip32(:private)).to eql("xprv9vB7xEWwNp9kh1wQRfCCQMnZUEG21LpbR9NPCNN1dwhiZkjjeGRnaALmPXCX7SgjFTiCTT6bXes17boXtjq3xLpcDjzEuGLQBM5ohqkao9G")
          end

          it "generates a serialized public_key" do
            expect(@node.to_serialized_hex).to eql("0488b21e01ad85d95580000000cdc0f06456a14876c898790e0b3b1a41c531170aec69da44ff7b7265bfe7743b039382d2b6003446792d2917f7ac4b3edf079a1a94dd4eb010dc25109dda680a9d")
            expect(@node.to_bip32).to eql("xpub69AUMk3qDBi3uW1sXgjCmVjJ2G6WQoYSnNHyzkmdCHEhSZ4tBok37xfFEqHd2AddP56Tqp4o56AePAgCjYdvpW2PU2jbUPFKsav5ut6Ch1m")
          end
        end

        describe "m/0'/1p" do
          before do
            @node = @master.node_for_path "m/0'/1p"
          end

          it "has an index of 1" do
            expect(@node.index).to eql(2147483649)
          end

          it "is public" do
            expect(@node.is_private?).to eql(true)
          end

          it "has a depth of 2" do
            expect(@node.depth).to eql(2)
          end

          it "generates subnode" do
            expect(@node.to_identifier).to eql("48b2a62638e9cb9b68f87671bc80041dbd3acf70")
            expect(@node.to_fingerprint).to eql("48b2a626")
            expect(@node.to_address).to eql("17dPfZg9P2zjrdkhsSAYt5YU7TwFpU6Acd")
            expect(@node.to_p2wpkh_p2sh).to eql("3JvZhix4hLkSJXiWbpx7ZGXJb3AXJg5xZ3")
            expect(@node.to_bech32_address).to eql("bc1qfze2vf3ca89ek68cwecmeqqyrk7n4nmsml42sp")
          end

          it "generates a private key" do
            expect(@node.private_key.to_hex).to eql("3a2086edd7d9df86c3487a5905a1712a9aa664bce8cc268141e07549eaa8661d")
            expect(@node.private_key.to_wif).to eql("KyAhgkU6sXTCm3eiHu81ev4jhcnEs6Toppbr8hqcm82jUFxbLX3u")
          end

          it "generates a public key" do
            expect(@node.public_key.to_hex).to eql("032edaf9e591ee27f3c69c36221e3c54c38088ef34e93fbb9bb2d4d9b92364cbbd")
          end

          it "generates a chain code" do
            expect(@node.chain_code_hex).to eql("a48ee6674c5264a237703fd383bccd9fad4d9378ac98ab05e6e7029b06360c0d")
          end

          it "generates a serialized private key" do
            expect(@node.to_serialized_hex(:private)).to eql("0488ade402cfa6128180000001a48ee6674c5264a237703fd383bccd9fad4d9378ac98ab05e6e7029b06360c0d003a2086edd7d9df86c3487a5905a1712a9aa664bce8cc268141e07549eaa8661d")
            expect(@node.to_bip32(:private)).to eql("xprv9xJocDuwtYCMNAo3Zw76WENQeAS6WGXQ55RCy7tDJ8oALr4FWkuVoHJeHVAcAqiZLE7Je3vZJHxspZdFHfnBEjHqU5hG1Jaj32dVoS6XLT1")
          end

          it "generates a serialized public_key" do
            expect(@node.to_serialized_hex).to eql("0488b21e02cfa6128180000001a48ee6674c5264a237703fd383bccd9fad4d9378ac98ab05e6e7029b06360c0d032edaf9e591ee27f3c69c36221e3c54c38088ef34e93fbb9bb2d4d9b92364cbbd")
            expect(@node.to_bip32).to eql("xpub6BJA1jSqiukeaesWfxe6sNK9CCGaujFFSJLomWHprUL9DePQ4JDkM5d88n49sMGJxrhpjazuXYWdMf17C9T5XnxkopaeS7jGk1GyyVziaMt")
          end
        end

        describe "M/0'/1p" do
          before do
            @node = @master.node_for_path "M/0'/1p"
          end

          it "has an index of 1" do
            expect(@node.index).to eql(2147483649)
          end

          it "is public" do
            expect(@node.is_private?).to eql(true)
          end

          it "has a depth of 2" do
            expect(@node.depth).to eql(2)
          end

          it "generates subnode" do
            expect(@node.to_identifier).to eql("48b2a62638e9cb9b68f87671bc80041dbd3acf70")
            expect(@node.to_fingerprint).to eql("48b2a626")
            expect(@node.to_address).to eql("17dPfZg9P2zjrdkhsSAYt5YU7TwFpU6Acd")
            expect(@node.to_p2wpkh_p2sh).to eql("3JvZhix4hLkSJXiWbpx7ZGXJb3AXJg5xZ3")
            expect(@node.to_bech32_address).to eql("bc1qfze2vf3ca89ek68cwecmeqqyrk7n4nmsml42sp")
          end

          it "does not generate a private key" do
            expect(@node.private_key).to be_nil
          end

          it "generates a public key" do
            expect(@node.public_key.to_hex).to eql("032edaf9e591ee27f3c69c36221e3c54c38088ef34e93fbb9bb2d4d9b92364cbbd")
          end

          it "generates a chain code" do
            expect(@node.chain_code_hex).to eql("a48ee6674c5264a237703fd383bccd9fad4d9378ac98ab05e6e7029b06360c0d")
          end

          it "generates a serialized private key" do
            expect { @node.to_serialized_hex(:private) }.to raise_error(MoneyTree::Node::PrivatePublicMismatch)
          end

          it "generates a serialized public_key" do
            expect(@node.to_serialized_hex).to eql("0488b21e02cfa6128180000001a48ee6674c5264a237703fd383bccd9fad4d9378ac98ab05e6e7029b06360c0d032edaf9e591ee27f3c69c36221e3c54c38088ef34e93fbb9bb2d4d9b92364cbbd")
            expect(@node.to_bip32).to eql("xpub6BJA1jSqiukeaesWfxe6sNK9CCGaujFFSJLomWHprUL9DePQ4JDkM5d88n49sMGJxrhpjazuXYWdMf17C9T5XnxkopaeS7jGk1GyyVziaMt")
          end
        end
      end
    end

    describe "Test vector 5" do
      describe "from an invalid bip32 key" do
        # it "recognizes pubkey version / prvkey mismatch" do
        #   MoneyTree::Node.from_bip32 "xpub661MyMwAqRbcEYS8w7XLSVeEsBXy79zSzH1J8vCdxAZningWLdN3zgtU6LBpB85b3D2yc8sfvZU521AAwdZafEz7mnzBBsz4wKY5fTtTQBm"
        # end

        # it "recognizes prvkey version / pubkey mismatch" do
        #   MoneyTree::Node.from_bip32 "xprv9s21ZrQH143K24Mfq5zL5MhWK9hUhhGbd45hLXo2Pq2oqzMMo63oStZzFGTQQD3dC4H2D5GBj7vWvSQaaBv5cxi9gafk7NF3pnBju6dwKvH"
        # end

        it "recognizes invalid pubkey prefix 04" do
          expect {
            MoneyTree::Node.from_bip32 "xpub661MyMwAqRbcEYS8w7XLSVeEsBXy79zSzH1J8vCdxAZningWLdN3zgtU6Txnt3siSujt9RCVYsx4qHZGc62TG4McvMGcAUjeuwZdduYEvFn"
          }.to raise_error MoneyTree::Node::ImportError
        end

        it "recognizes invalid prvkey prefix 04" do
          expect {
            MoneyTree::Node.from_bip32 "xprv9s21ZrQH143K24Mfq5zL5MhWK9hUhhGbd45hLXo2Pq2oqzMMo63oStZzFGpWnsj83BHtEy5Zt8CcDr1UiRXuWCmTQLxEK9vbz5gPstX92JQ"
          }.to raise_error MoneyTree::Node::ImportError
        end

        it "recognizes invalid pubkey prefix 01" do
          expect {
            MoneyTree::Node.from_bip32 "xpub661MyMwAqRbcEYS8w7XLSVeEsBXy79zSzH1J8vCdxAZningWLdN3zgtU6N8ZMMXctdiCjxTNq964yKkwrkBJJwpzZS4HS2fxvyYUA4q2Xe4"
          }.to raise_error MoneyTree::Node::ImportError
        end

        it "recognizes invalid prvkey prefix 01" do
          expect {
            MoneyTree::Node.from_bip32 "xprv9s21ZrQH143K24Mfq5zL5MhWK9hUhhGbd45hLXo2Pq2oqzMMo63oStZzFAzHGBP2UuGCqWLTAPLcMtD9y5gkZ6Eq3Rjuahrv17fEQ3Qen6J"
          }.to raise_error MoneyTree::Node::ImportError
        end

        # it "recognizes zero depth with non-zero parent fingerprint" do
        #   MoneyTree::Node.from_bip32 "xprv9s2SPatNQ9Vc6GTbVMFPFo7jsaZySyzk7L8n2uqKXJen3KUmvQNTuLh3fhZMBoG3G4ZW1N2kZuHEPY53qmbZzCHshoQnNf4GvELZfqTUrcv"
        # end

        # it "recognizes zero depth with non-zero parent fingerprint" do
        #   MoneyTree::Node.from_bip32 "xpub661no6RGEX3uJkY4bNnPcw4URcQTrSibUZ4NqJEw5eBkv7ovTwgiT91XX27VbEXGENhYRCf7hyEbWrR3FewATdCEebj6znwMfQkhRYHRLpJ"
        # end

        # it "recognizes zero depth with non-zero index" do
        #   MoneyTree::Node.from_bip32 "xprv9s21ZrQH4r4TsiLvyLXqM9P7k1K3EYhA1kkD6xuquB5i39AU8KF42acDyL3qsDbU9NmZn6MsGSUYZEsuoePmjzsB3eFKSUEh3Gu1N3cqVUN"
        # end

        # it "recognizes zero depth with non-zero index" do
        #   MoneyTree::Node.from_bip32 "xpub661MyMwAuDcm6CRQ5N4qiHKrJ39Xe1R1NyfouMKTTWcguwVcfrZJaNvhpebzGerh7gucBvzEQWRugZDuDXjNDRmXzSZe4c7mnTK97pTvGS8"
        # end

        # it "recognizes unknown extended key version" do
        #   MoneyTree::Node.from_bip32 "DMwo58pR1QLEFihHiXPVykYB6fJmsTeHvyTp7hRThAtCX8CvYzgPcn8XnmdfHGMQzT7ayAmfo4z3gY5KfbrZWZ6St24UVf2Qgo6oujFktLHdHY4"
        # end

        # it "recognizes unknown extended key version" do
        #   MoneyTree::Node.from_bip32 "DMwo58pR1QLEFihHiXPVykYB6fJmsTeHvyTp7hRThAtCX8CvYzgPcn8XnmdfHPmHJiEDXkTiJTVV9rHEBUem2mwVbbNfvT2MTcAqj3nesx8uBf9"
        # end

        # it "recognizes private key 0 not in 1..n-1" do
        #   MoneyTree::Node.from_bip32 "xprv9s21ZrQH143K24Mfq5zL5MhWK9hUhhGbd45hLXo2Pq2oqzMMo63oStZzF93Y5wvzdUayhgkkFoicQZcP3y52uPPxFnfoLZB21Teqt1VvEHx"
        # end

        # it "recognizes private key n not in 1..n-1" do
        #   MoneyTree::Node.from_bip32 "xprv9s21ZrQH143K24Mfq5zL5MhWK9hUhhGbd45hLXo2Pq2oqzMMo63oStZzFAzHGBP2UuGCqWLTAPLcMtD5SDKr24z3aiUvKr9bJpdrcLg1y3G"
        # end

        it "recognizes invalid pubkey 020000000000000000000000000000000000000000000000000000000000000007" do
          expect {
            MoneyTree::Node.from_bip32 "xpub661MyMwAqRbcEYS8w7XLSVeEsBXy79zSzH1J8vCdxAZningWLdN3zgtU6Q5JXayek4PRsn35jii4veMimro1xefsM58PgBMrvdYre8QyULY"
          }.to raise_error OpenSSL::PKey::EC::Point::Error
        end

        it "recognizes invalid checksum" do
          expect {
            MoneyTree::Node.from_bip32 "xprv9s21ZrQH143K3QTDL4LXw2F7HEK3wJUD2nW2nRk4stbPy6cq3jPPqjiChkVvvNKmPGJxWUtg6LnF5kejMRNNU3TGtRBeJgk33yuGBxrMPHL"
          }.to raise_error EncodingError
        end
      end
    end

    describe "negative index" do
      before do
        @master = MoneyTree::Master.new seed_hex: "000102030405060708090a0b0c0d0e0f"
        @node = @master.node_for_path "m/0'/-1"
      end

      it "has an index of 1" do
        expect(@node.index).to eql(-1)
      end

      it "is public" do
        expect(@node.is_private?).to eql(true)
      end

      it "has a depth of 2" do
        expect(@node.depth).to eql(2)
      end

      it "generates a serialized private key" do
        expect(@node.to_serialized_hex(:private)).to eql("0488ade4025c1bd648ffffffff0f9ca680ee23c81a305d96b86f811947e65590200b6f74d66ecf83936313a9c900235893db08ad0efc6ae4a1eac5b31a90a7d0906403d139d4d7f3c6796fb42c4e")
        expect(@node.to_bip32(:private)).to eql("xprv9wTYmMFvAM7JHf3RuUidc24a4y2t4gN7aNP5ABreWAqt6BUBcf6xE8RNQxj2vUssYWM8iAZiZi5H1fmKkkpXjtwDCDv1pg8fSfQMk9rhHYt")
      end

      it "generates a serialized public_key" do
        expect(@node.to_serialized_hex).to eql("0488b21e025c1bd648ffffffff0f9ca680ee23c81a305d96b86f811947e65590200b6f74d66ecf83936313a9c902adb7979a5e99bf8acdfec3680bf482feac9898b28808c22d47db62e98de5d3fa")
        expect(@node.to_bip32).to eql("xpub6ASuArnozifbW97u1WFdyA1JczsNU95xwbJfxaGG4WNrxyoLACRCmvjrGEojsRsoZULf5FyZXv6AWAtce2UErsshvkpjNaT1fP6sMgTZdc1")
      end
    end

    describe "importing node" do
      describe ".from_bip32(address)" do
        it "imports a valid private node address" do
          @node = MoneyTree::Node.from_bip32 "xprv9uHRZZhk6KAJC1avXpDAp4MDc3sQKNxDiPvvkX8Br5ngLNv1TxvUxt4cV1rGL5hj6KCesnDYUhd7oWgT11eZG7XnxHrnYeSvkzY7d2bhkJ7"
          expect(@node.private_key.to_hex).to eql("edb2e14f9ee77d26dd93b4ecede8d16ed408ce149b6cd80b0715a2d911a0afea")
          expect(@node.index).to eql(2147483648)
          expect(@node.is_private?).to eql(true)
          expect(@node.depth).to eql(1)
          expect(@node.public_key.to_hex).to eql("035a784662a4a20a65bf6aab9ae98a6c068a81c52e4b032c0fb5400c706cfccc56")
          expect(@node.chain_code_hex).to eql("47fdacbd0f1097043b78c63c20c34ef4ed9a111d980047ad16282c7ae6236141")
          expect(@node.parent_fingerprint).to eql("3442193e")
        end

        it "imports a valid public node address" do
          @node = MoneyTree::Node.from_bip32 "xpub68Gmy5EdvgibQVfPdqkBBCHxA5htiqg55crXYuXoQRKfDBFA1WEjWgP6LHhwBZeNK1VTsfTFUHCdrfp1bgwQ9xv5ski8PX9rL2dZXvgGDnw"
          expect(@node.private_key).to be_nil
          expect(@node.index).to eql(2147483648)
          expect(@node.is_private?).to eql(true)
          expect(@node.depth).to eql(1)
          expect(@node.public_key.to_hex).to eql("035a784662a4a20a65bf6aab9ae98a6c068a81c52e4b032c0fb5400c706cfccc56")
          expect(@node.chain_code_hex).to eql("47fdacbd0f1097043b78c63c20c34ef4ed9a111d980047ad16282c7ae6236141")
          expect(@node.parent_fingerprint).to eql("3442193e")
        end
      end
    end

    describe "deriving a child node" do
      describe "#node_for_path" do
        it "correctly derives from a node with a chain code represented in 31 bytes" do
          @node = MoneyTree::Node.from_bip32 "tpubD6NzVbkrYhZ4WM42MZZmUZ7LjxyjBf5bGjEeLf9nJnMZqocGJWu94drvpqWsE9jE7k3h22v6gjpPGnqgBrqwGsRYwDXVRfQ2M9dfHbXP5zA"
          @subnode = @node.node_for_path("m/1")
          expect(@subnode.to_bip32(network: :bitcoin_testnet)).to eql("tpubDA7bCxb3Nrcz2ChXyPqXxbG4q5oiAZUHR7wD3LAiXukuxmT65weWw84XYmjhkJTkJEM6LhNWioWTpKEkQp7j2fgVccj3PPc271xHDeMsaTY")
        end
      end
    end

    describe "deriving a parent node" do
      before do
        @master = MoneyTree::Master.new seed_hex: "000102030405060708090a0b0c0d0e0f"
        @node = @master.node_for_path("m/101p")
        @subnode = @node.node_for_path("1")
      end
      context "m/101'/1 -> m/101'" do
        it "correctly derives from a subnode with priv key to a node knowing it's public key" do
          node_priv_hex = @node.private_key.to_hex
          @node.strip_private_info!
          expect(@subnode.derive_parent_node(@node).private_key.to_hex).to eq(node_priv_hex)
        end
      end
      context "m/101' -> master" do
        it "unable to derive from a hardened node with priv key to a master node knowing it's public key" do
          master_priv_hex = @master.private_key.to_hex
          @master.strip_private_info!
          expect(@node.derive_parent_node(@master).private_key.to_hex).to_not eq(master_priv_hex)
        end
      end
      context "m/101 -> master" do
        it "correctly derives from a non-hardened node with priv key to a master node knowing it's public key" do
          @node = @master.node_for_path("m/101")
          master_priv_hex = @master.private_key.to_hex
          expect(@node.derive_parent_node(@master).private_key.to_hex).to eq(master_priv_hex)
        end
      end
    end
  end
end