<NME> script_standard_tests.cpp
<BEF> ADDFILE
<MSG> [script] Unit tests for script/standard functions

<DFF> @@ -0,0 +1,385 @@
+// Copyright (c) 2017 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include "key.h"
+#include "script/script.h"
+#include "script/script_error.h"
+#include "script/standard.h"
+#include "test/test_bitcoin.h"
+
+#include <boost/test/unit_test.hpp>
+
+
+BOOST_FIXTURE_TEST_SUITE(script_standard_tests, BasicTestingSetup)
+
+BOOST_AUTO_TEST_CASE(script_standard_Solver_success)
+{
+    CKey keys[3];
+    CPubKey pubkeys[3];
+    for (int i = 0; i < 3; i++) {
+        keys[i].MakeNewKey(true);
+        pubkeys[i] = keys[i].GetPubKey();
+    }
+
+    CScript s;
+    txnouttype whichType;
+    std::vector<std::vector<unsigned char> > solutions;
+
+    // TX_PUBKEY
+    s.clear();
+    s << ToByteVector(pubkeys[0]) << OP_CHECKSIG;
+    BOOST_CHECK(Solver(s, whichType, solutions));
+    BOOST_CHECK_EQUAL(whichType, TX_PUBKEY);
+    BOOST_CHECK_EQUAL(solutions.size(), 1);
+    BOOST_CHECK(solutions[0] == ToByteVector(pubkeys[0]));
+
+    // TX_PUBKEYHASH
+    s.clear();
+    s << OP_DUP << OP_HASH160 << ToByteVector(pubkeys[0].GetID()) << OP_EQUALVERIFY << OP_CHECKSIG;
+    BOOST_CHECK(Solver(s, whichType, solutions));
+    BOOST_CHECK_EQUAL(whichType, TX_PUBKEYHASH);
+    BOOST_CHECK_EQUAL(solutions.size(), 1);
+    BOOST_CHECK(solutions[0] == ToByteVector(pubkeys[0].GetID()));
+
+    // TX_SCRIPTHASH
+    CScript redeemScript(s); // initialize with leftover P2PKH script
+    s.clear();
+    s << OP_HASH160 << ToByteVector(CScriptID(redeemScript)) << OP_EQUAL;
+    BOOST_CHECK(Solver(s, whichType, solutions));
+    BOOST_CHECK_EQUAL(whichType, TX_SCRIPTHASH);
+    BOOST_CHECK_EQUAL(solutions.size(), 1);
+    BOOST_CHECK(solutions[0] == ToByteVector(CScriptID(redeemScript)));
+
+    // TX_MULTISIG
+    s.clear();
+    s << OP_1 <<
+        ToByteVector(pubkeys[0]) <<
+        ToByteVector(pubkeys[1]) <<
+        OP_2 << OP_CHECKMULTISIG;
+    BOOST_CHECK(Solver(s, whichType, solutions));
+    BOOST_CHECK_EQUAL(whichType, TX_MULTISIG);
+    BOOST_CHECK_EQUAL(solutions.size(), 4);
+    BOOST_CHECK(solutions[0] == std::vector<unsigned char>({1}));
+    BOOST_CHECK(solutions[1] == ToByteVector(pubkeys[0]));
+    BOOST_CHECK(solutions[2] == ToByteVector(pubkeys[1]));
+    BOOST_CHECK(solutions[3] == std::vector<unsigned char>({2}));
+
+    s.clear();
+    s << OP_2 <<
+        ToByteVector(pubkeys[0]) <<
+        ToByteVector(pubkeys[1]) <<
+        ToByteVector(pubkeys[2]) <<
+        OP_3 << OP_CHECKMULTISIG;
+    BOOST_CHECK(Solver(s, whichType, solutions));
+    BOOST_CHECK_EQUAL(whichType, TX_MULTISIG);
+    BOOST_CHECK_EQUAL(solutions.size(), 5);
+    BOOST_CHECK(solutions[0] == std::vector<unsigned char>({2}));
+    BOOST_CHECK(solutions[1] == ToByteVector(pubkeys[0]));
+    BOOST_CHECK(solutions[2] == ToByteVector(pubkeys[1]));
+    BOOST_CHECK(solutions[3] == ToByteVector(pubkeys[2]));
+    BOOST_CHECK(solutions[4] == std::vector<unsigned char>({3}));
+
+    // TX_NULL_DATA
+    solutions.clear();
+    s.clear();
+    s << OP_RETURN <<
+        std::vector<unsigned char>({0}) <<
+        std::vector<unsigned char>({75}) <<
+        std::vector<unsigned char>({255});
+    BOOST_CHECK(Solver(s, whichType, solutions));
+    BOOST_CHECK_EQUAL(whichType, TX_NULL_DATA);
+    BOOST_CHECK_EQUAL(solutions.size(), 0);
+
+    // TX_WITNESS_V0_KEYHASH
+    solutions.clear();
+    s.clear();
+    s << OP_0 << ToByteVector(pubkeys[0].GetID());
+    BOOST_CHECK(Solver(s, whichType, solutions));
+    BOOST_CHECK_EQUAL(whichType, TX_WITNESS_V0_KEYHASH);
+    BOOST_CHECK_EQUAL(solutions.size(), 1);
+    BOOST_CHECK(solutions[0] == ToByteVector(pubkeys[0].GetID()));
+
+    // TX_WITNESS_V0_SCRIPTHASH
+    uint256 scriptHash;
+    CSHA256().Write(&redeemScript[0], redeemScript.size()).Finalize(scriptHash.begin());
+
+    solutions.clear();
+    s.clear();
+    s << OP_0 << ToByteVector(scriptHash);
+    BOOST_CHECK(Solver(s, whichType, solutions));
+    BOOST_CHECK_EQUAL(whichType, TX_WITNESS_V0_SCRIPTHASH);
+    BOOST_CHECK_EQUAL(solutions.size(), 1);
+    BOOST_CHECK(solutions[0] == ToByteVector(scriptHash));
+
+    // TX_NONSTANDARD
+    solutions.clear();
+    s.clear();
+    s << OP_9 << OP_ADD << OP_11 << OP_EQUAL;
+    BOOST_CHECK(!Solver(s, whichType, solutions));
+    BOOST_CHECK_EQUAL(whichType, TX_NONSTANDARD);
+}
+
+BOOST_AUTO_TEST_CASE(script_standard_Solver_failure)
+{
+    CKey key;
+    CPubKey pubkey;
+    key.MakeNewKey(true);
+    pubkey = key.GetPubKey();
+
+    CScript s;
+    txnouttype whichType;
+    std::vector<std::vector<unsigned char> > solutions;
+
+    // TX_PUBKEY with incorrectly sized pubkey
+    s.clear();
+    s << std::vector<unsigned char>(30, 0x01) << OP_CHECKSIG;
+    BOOST_CHECK(!Solver(s, whichType, solutions));
+
+    // TX_PUBKEYHASH with incorrectly sized key hash
+    s.clear();
+    s << OP_DUP << OP_HASH160 << ToByteVector(pubkey) << OP_EQUALVERIFY << OP_CHECKSIG;
+    BOOST_CHECK(!Solver(s, whichType, solutions));
+
+    // TX_SCRIPTHASH with incorrectly sized script hash
+    s.clear();
+    s << OP_HASH160 << std::vector<unsigned char>(21, 0x01) << OP_EQUAL;
+    BOOST_CHECK(!Solver(s, whichType, solutions));
+
+    // TX_MULTISIG 0/2
+    s.clear();
+    s << OP_0 << ToByteVector(pubkey) << OP_1 << OP_CHECKMULTISIG;
+    BOOST_CHECK(!Solver(s, whichType, solutions));
+
+    // TX_MULTISIG 2/1
+    s.clear();
+    s << OP_2 << ToByteVector(pubkey) << OP_1 << OP_CHECKMULTISIG;
+    BOOST_CHECK(!Solver(s, whichType, solutions));
+
+    // TX_MULTISIG n = 2 with 1 pubkey
+    s.clear();
+    s << OP_1 << ToByteVector(pubkey) << OP_2 << OP_CHECKMULTISIG;
+    BOOST_CHECK(!Solver(s, whichType, solutions));
+
+    // TX_MULTISIG n = 1 with 0 pubkeys
+    s.clear();
+    s << OP_1 << OP_1 << OP_CHECKMULTISIG;
+    BOOST_CHECK(!Solver(s, whichType, solutions));
+
+    // TX_NULL_DATA with other opcodes
+    s.clear();
+    s << OP_RETURN << std::vector<unsigned char>({75}) << OP_ADD;
+    BOOST_CHECK(!Solver(s, whichType, solutions));
+
+    // TX_WITNESS with unknown version
+    s.clear();
+    s << OP_1 << ToByteVector(pubkey);
+    BOOST_CHECK(!Solver(s, whichType, solutions));
+
+    // TX_WITNESS with incorrect program size
+    s.clear();
+    s << OP_0 << std::vector<unsigned char>(19, 0x01);
+    BOOST_CHECK(!Solver(s, whichType, solutions));
+}
+
+BOOST_AUTO_TEST_CASE(script_standard_ExtractDestination)
+{
+    CKey key;
+    CPubKey pubkey;
+    key.MakeNewKey(true);
+    pubkey = key.GetPubKey();
+
+    CScript s;
+    CTxDestination address;
+
+    // TX_PUBKEY
+    s.clear();
+    s << ToByteVector(pubkey) << OP_CHECKSIG;
+    BOOST_CHECK(ExtractDestination(s, address));
+    BOOST_CHECK(boost::get<CKeyID>(&address) &&
+                *boost::get<CKeyID>(&address) == pubkey.GetID());
+
+    // TX_PUBKEYHASH
+    s.clear();
+    s << OP_DUP << OP_HASH160 << ToByteVector(pubkey.GetID()) << OP_EQUALVERIFY << OP_CHECKSIG;
+    BOOST_CHECK(ExtractDestination(s, address));
+    BOOST_CHECK(boost::get<CKeyID>(&address) &&
+                *boost::get<CKeyID>(&address) == pubkey.GetID());
+
+    // TX_SCRIPTHASH
+    CScript redeemScript(s); // initialize with leftover P2PKH script
+    s.clear();
+    s << OP_HASH160 << ToByteVector(CScriptID(redeemScript)) << OP_EQUAL;
+    BOOST_CHECK(ExtractDestination(s, address));
+    BOOST_CHECK(boost::get<CScriptID>(&address) &&
+                *boost::get<CScriptID>(&address) == CScriptID(redeemScript));
+
+    // TX_MULTISIG
+    s.clear();
+    s << OP_1 << ToByteVector(pubkey) << OP_1 << OP_CHECKMULTISIG;
+    BOOST_CHECK(!ExtractDestination(s, address));
+
+    // TX_NULL_DATA
+    s.clear();
+    s << OP_RETURN << std::vector<unsigned char>({75});
+    BOOST_CHECK(!ExtractDestination(s, address));
+
+    // TX_WITNESS_V0_KEYHASH
+    s.clear();
+    s << OP_0 << ToByteVector(pubkey);
+    BOOST_CHECK(!ExtractDestination(s, address));
+
+    // TX_WITNESS_V0_SCRIPTHASH
+    s.clear();
+    s << OP_0 << ToByteVector(CScriptID(redeemScript));
+    BOOST_CHECK(!ExtractDestination(s, address));
+}
+
+BOOST_AUTO_TEST_CASE(script_standard_ExtractDestinations)
+{
+    CKey keys[3];
+    CPubKey pubkeys[3];
+    for (int i = 0; i < 3; i++) {
+        keys[i].MakeNewKey(true);
+        pubkeys[i] = keys[i].GetPubKey();
+    }
+
+    CScript s;
+    txnouttype whichType;
+    std::vector<CTxDestination> addresses;
+    int nRequired;
+
+    // TX_PUBKEY
+    s.clear();
+    s << ToByteVector(pubkeys[0]) << OP_CHECKSIG;
+    BOOST_CHECK(ExtractDestinations(s, whichType, addresses, nRequired));
+    BOOST_CHECK_EQUAL(whichType, TX_PUBKEY);
+    BOOST_CHECK_EQUAL(addresses.size(), 1);
+    BOOST_CHECK_EQUAL(nRequired, 1);
+    BOOST_CHECK(boost::get<CKeyID>(&addresses[0]) &&
+                *boost::get<CKeyID>(&addresses[0]) == pubkeys[0].GetID());
+
+    // TX_PUBKEYHASH
+    s.clear();
+    s << OP_DUP << OP_HASH160 << ToByteVector(pubkeys[0].GetID()) << OP_EQUALVERIFY << OP_CHECKSIG;
+    BOOST_CHECK(ExtractDestinations(s, whichType, addresses, nRequired));
+    BOOST_CHECK_EQUAL(whichType, TX_PUBKEYHASH);
+    BOOST_CHECK_EQUAL(addresses.size(), 1);
+    BOOST_CHECK_EQUAL(nRequired, 1);
+    BOOST_CHECK(boost::get<CKeyID>(&addresses[0]) &&
+                *boost::get<CKeyID>(&addresses[0]) == pubkeys[0].GetID());
+
+    // TX_SCRIPTHASH
+    CScript redeemScript(s); // initialize with leftover P2PKH script
+    s.clear();
+    s << OP_HASH160 << ToByteVector(CScriptID(redeemScript)) << OP_EQUAL;
+    BOOST_CHECK(ExtractDestinations(s, whichType, addresses, nRequired));
+    BOOST_CHECK_EQUAL(whichType, TX_SCRIPTHASH);
+    BOOST_CHECK_EQUAL(addresses.size(), 1);
+    BOOST_CHECK_EQUAL(nRequired, 1);
+    BOOST_CHECK(boost::get<CScriptID>(&addresses[0]) &&
+                *boost::get<CScriptID>(&addresses[0]) == CScriptID(redeemScript));
+
+    // TX_MULTISIG
+    s.clear();
+    s << OP_2 <<
+        ToByteVector(pubkeys[0]) <<
+        ToByteVector(pubkeys[1]) <<
+        OP_2 << OP_CHECKMULTISIG;
+    BOOST_CHECK(ExtractDestinations(s, whichType, addresses, nRequired));
+    BOOST_CHECK_EQUAL(whichType, TX_MULTISIG);
+    BOOST_CHECK_EQUAL(addresses.size(), 2);
+    BOOST_CHECK_EQUAL(nRequired, 2);
+    BOOST_CHECK(boost::get<CKeyID>(&addresses[0]) &&
+                *boost::get<CKeyID>(&addresses[0]) == pubkeys[0].GetID());
+    BOOST_CHECK(boost::get<CKeyID>(&addresses[1]) &&
+                *boost::get<CKeyID>(&addresses[1]) == pubkeys[1].GetID());
+
+    // TX_NULL_DATA
+    s.clear();
+    s << OP_RETURN << std::vector<unsigned char>({75});
+    BOOST_CHECK(!ExtractDestinations(s, whichType, addresses, nRequired));
+
+    // TX_WITNESS_V0_KEYHASH
+    s.clear();
+    s << OP_0 << ToByteVector(pubkeys[0].GetID());
+    BOOST_CHECK(!ExtractDestinations(s, whichType, addresses, nRequired));
+
+    // TX_WITNESS_V0_SCRIPTHASH
+    s.clear();
+    s << OP_0 << ToByteVector(CScriptID(redeemScript));
+    BOOST_CHECK(!ExtractDestinations(s, whichType, addresses, nRequired));
+}
+
+BOOST_AUTO_TEST_CASE(script_standard_GetScriptFor_)
+{
+    CKey keys[3];
+    CPubKey pubkeys[3];
+    for (int i = 0; i < 3; i++) {
+        keys[i].MakeNewKey(true);
+        pubkeys[i] = keys[i].GetPubKey();
+    }
+
+    CScript expected, result;
+
+    // CKeyID
+    expected.clear();
+    expected << OP_DUP << OP_HASH160 << ToByteVector(pubkeys[0].GetID()) << OP_EQUALVERIFY << OP_CHECKSIG;
+    result = GetScriptForDestination(pubkeys[0].GetID());
+    BOOST_CHECK(result == expected);
+
+    // CScriptID
+    CScript redeemScript(result);
+    expected.clear();
+    expected << OP_HASH160 << ToByteVector(CScriptID(redeemScript)) << OP_EQUAL;
+    result = GetScriptForDestination(CScriptID(redeemScript));
+    BOOST_CHECK(result == expected);
+
+    // CNoDestination
+    expected.clear();
+    result = GetScriptForDestination(CNoDestination());
+    BOOST_CHECK(result == expected);
+
+    // GetScriptForRawPubKey
+    expected.clear();
+    expected << ToByteVector(pubkeys[0]) << OP_CHECKSIG;
+    result = GetScriptForRawPubKey(pubkeys[0]);
+    BOOST_CHECK(result == expected);
+
+    // GetScriptForMultisig
+    expected.clear();
+    expected << OP_2 <<
+        ToByteVector(pubkeys[0]) <<
+        ToByteVector(pubkeys[1]) <<
+        ToByteVector(pubkeys[2]) <<
+        OP_3 << OP_CHECKMULTISIG;
+    result = GetScriptForMultisig(2, std::vector<CPubKey>(pubkeys, pubkeys + 3));
+    BOOST_CHECK(result == expected);
+
+    // GetScriptForWitness
+    CScript witnessScript;
+
+    witnessScript << ToByteVector(pubkeys[0]) << OP_CHECKSIG;
+    expected.clear();
+    expected << OP_0 << ToByteVector(pubkeys[0].GetID());
+    result = GetScriptForWitness(witnessScript);
+    BOOST_CHECK(result == expected);
+
+    witnessScript.clear();
+    witnessScript << OP_DUP << OP_HASH160 << ToByteVector(pubkeys[0].GetID()) << OP_EQUALVERIFY << OP_CHECKSIG;
+    result = GetScriptForWitness(witnessScript);
+    BOOST_CHECK(result == expected);
+
+    witnessScript.clear();
+    witnessScript << OP_1 << ToByteVector(pubkeys[0]) << OP_1 << OP_CHECKMULTISIG;
+
+    uint256 scriptHash;
+    CSHA256().Write(&witnessScript[0], witnessScript.size()).Finalize(scriptHash.begin());
+
+    expected.clear();
+    expected << OP_0 << ToByteVector(scriptHash);
+    result = GetScriptForWitness(witnessScript);
+    BOOST_CHECK(result == expected);
+}
+
+BOOST_AUTO_TEST_SUITE_END()

{'addition_count': 385, 'commit_subject': '[script] Unit tests for script/standard functions', 'deletion_count': 0, 'file_extension': '.cpp', 'lang': 'cpp', 'license': 'mit', 'repo_name': 'qtumproject/qtum'}