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Diffstat (limited to 'src/test/scriptnum_tests.cpp')
| -rw-r--r-- | src/test/scriptnum_tests.cpp | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/src/test/scriptnum_tests.cpp b/src/test/scriptnum_tests.cpp new file mode 100644 index 0000000000..cd194cc4d9 --- /dev/null +++ b/src/test/scriptnum_tests.cpp @@ -0,0 +1,196 @@ +// Copyright (c) 2012-2014 The Bitcoin Core developers +// Distributed under the MIT/X11 software license, see the accompanying +// file COPYING or http://www.opensource.org/licenses/mit-license.php. + +#include "bignum.h" +#include "script.h" +#include <boost/test/unit_test.hpp> +#include <limits.h> +#include <stdint.h> +BOOST_AUTO_TEST_SUITE(scriptnum_tests) + +static const int64_t values[] = \ +{ 0, 1, CHAR_MIN, CHAR_MAX, UCHAR_MAX, SHRT_MIN, USHRT_MAX, INT_MIN, INT_MAX, UINT_MAX, LONG_MIN, LONG_MAX }; +static const int64_t offsets[] = { 1, 0x79, 0x80, 0x81, 0xFF, 0x7FFF, 0x8000, 0xFFFF, 0x10000}; + +static bool verify(const CBigNum& bignum, const CScriptNum& scriptnum) +{ + return bignum.getvch() == scriptnum.getvch() && bignum.getint() == scriptnum.getint(); +} + +static void CheckCreateVch(const int64_t& num) +{ + CBigNum bignum(num); + CScriptNum scriptnum(num); + BOOST_CHECK(verify(bignum, scriptnum)); + + CBigNum bignum2(bignum.getvch()); + CScriptNum scriptnum2(scriptnum.getvch()); + BOOST_CHECK(verify(bignum2, scriptnum2)); + + CBigNum bignum3(scriptnum2.getvch()); + CScriptNum scriptnum3(bignum2.getvch()); + BOOST_CHECK(verify(bignum3, scriptnum3)); +} + +static void CheckCreateInt(const int64_t& num) +{ + CBigNum bignum(num); + CScriptNum scriptnum(num); + BOOST_CHECK(verify(bignum, scriptnum)); + BOOST_CHECK(verify(bignum.getint(), CScriptNum(scriptnum.getint()))); + BOOST_CHECK(verify(scriptnum.getint(), CScriptNum(bignum.getint()))); + BOOST_CHECK(verify(CBigNum(scriptnum.getint()).getint(), CScriptNum(CScriptNum(bignum.getint()).getint()))); +} + + +static void CheckAdd(const int64_t& num1, const int64_t& num2) +{ + const CBigNum bignum1(num1); + const CBigNum bignum2(num2); + const CScriptNum scriptnum1(num1); + const CScriptNum scriptnum2(num2); + CBigNum bignum3(num1); + CBigNum bignum4(num1); + CScriptNum scriptnum3(num1); + CScriptNum scriptnum4(num1); + + // int64_t overflow is undefined. + bool invalid = (((num2 > 0) && (num1 > (std::numeric_limits<int64_t>::max() - num2))) || + ((num2 < 0) && (num1 < (std::numeric_limits<int64_t>::min() - num2)))); + if (!invalid) + { + BOOST_CHECK(verify(bignum1 + bignum2, scriptnum1 + scriptnum2)); + BOOST_CHECK(verify(bignum1 + bignum2, scriptnum1 + num2)); + BOOST_CHECK(verify(bignum1 + bignum2, scriptnum2 + num1)); + } +} + +static void CheckNegate(const int64_t& num) +{ + const CBigNum bignum(num); + const CScriptNum scriptnum(num); + + // -INT64_MIN is undefined + if (num != std::numeric_limits<int64_t>::min()) + BOOST_CHECK(verify(-bignum, -scriptnum)); +} + +static void CheckSubtract(const int64_t& num1, const int64_t& num2) +{ + const CBigNum bignum1(num1); + const CBigNum bignum2(num2); + const CScriptNum scriptnum1(num1); + const CScriptNum scriptnum2(num2); + bool invalid = false; + + // int64_t overflow is undefined. + invalid = ((num2 > 0 && num1 < std::numeric_limits<int64_t>::min() + num2) || + (num2 < 0 && num1 > std::numeric_limits<int64_t>::max() + num2)); + if (!invalid) + { + BOOST_CHECK(verify(bignum1 - bignum2, scriptnum1 - scriptnum2)); + BOOST_CHECK(verify(bignum1 - bignum2, scriptnum1 - num2)); + } + + invalid = ((num1 > 0 && num2 < std::numeric_limits<int64_t>::min() + num1) || + (num1 < 0 && num2 > std::numeric_limits<int64_t>::max() + num1)); + if (!invalid) + { + BOOST_CHECK(verify(bignum2 - bignum1, scriptnum2 - scriptnum1)); + BOOST_CHECK(verify(bignum2 - bignum1, scriptnum2 - num1)); + } +} + +static void CheckCompare(const int64_t& num1, const int64_t& num2) +{ + const CBigNum bignum1(num1); + const CBigNum bignum2(num2); + const CScriptNum scriptnum1(num1); + const CScriptNum scriptnum2(num2); + + BOOST_CHECK((bignum1 == bignum1) == (scriptnum1 == scriptnum1)); + BOOST_CHECK((bignum1 != bignum1) == (scriptnum1 != scriptnum1)); + BOOST_CHECK((bignum1 < bignum1) == (scriptnum1 < scriptnum1)); + BOOST_CHECK((bignum1 > bignum1) == (scriptnum1 > scriptnum1)); + BOOST_CHECK((bignum1 >= bignum1) == (scriptnum1 >= scriptnum1)); + BOOST_CHECK((bignum1 <= bignum1) == (scriptnum1 <= scriptnum1)); + + BOOST_CHECK((bignum1 == bignum1) == (scriptnum1 == num1)); + BOOST_CHECK((bignum1 != bignum1) == (scriptnum1 != num1)); + BOOST_CHECK((bignum1 < bignum1) == (scriptnum1 < num1)); + BOOST_CHECK((bignum1 > bignum1) == (scriptnum1 > num1)); + BOOST_CHECK((bignum1 >= bignum1) == (scriptnum1 >= num1)); + BOOST_CHECK((bignum1 <= bignum1) == (scriptnum1 <= num1)); + + BOOST_CHECK((bignum1 == bignum2) == (scriptnum1 == scriptnum2)); + BOOST_CHECK((bignum1 != bignum2) == (scriptnum1 != scriptnum2)); + BOOST_CHECK((bignum1 < bignum2) == (scriptnum1 < scriptnum2)); + BOOST_CHECK((bignum1 > bignum2) == (scriptnum1 > scriptnum2)); + BOOST_CHECK((bignum1 >= bignum2) == (scriptnum1 >= scriptnum2)); + BOOST_CHECK((bignum1 <= bignum2) == (scriptnum1 <= scriptnum2)); + + BOOST_CHECK((bignum1 == bignum2) == (scriptnum1 == num2)); + BOOST_CHECK((bignum1 != bignum2) == (scriptnum1 != num2)); + BOOST_CHECK((bignum1 < bignum2) == (scriptnum1 < num2)); + BOOST_CHECK((bignum1 > bignum2) == (scriptnum1 > num2)); + BOOST_CHECK((bignum1 >= bignum2) == (scriptnum1 >= num2)); + BOOST_CHECK((bignum1 <= bignum2) == (scriptnum1 <= num2)); +} + +static void RunCreate(const int64_t& num) +{ + CheckCreateInt(num); + CScriptNum scriptnum(num); + if (scriptnum.getvch().size() <= CScriptNum::nMaxNumSize) + CheckCreateVch(num); + else + { + BOOST_CHECK_THROW (CheckCreateVch(num), scriptnum_error); + } +} + +static void RunOperators(const int64_t& num1, const int64_t& num2) +{ + CheckAdd(num1, num2); + CheckSubtract(num1, num2); + CheckNegate(num1); + CheckCompare(num1, num2); +} + +BOOST_AUTO_TEST_CASE(creation) +{ + for(size_t i = 0; i < sizeof(values) / sizeof(values[0]); ++i) + { + for(size_t j = 0; j < sizeof(offsets) / sizeof(offsets[0]); ++j) + { + RunCreate(values[i]); + RunCreate(values[i] + offsets[j]); + RunCreate(values[i] - offsets[j]); + } + } +} + +BOOST_AUTO_TEST_CASE(operators) +{ + for(size_t i = 0; i < sizeof(values) / sizeof(values[0]); ++i) + { + for(size_t j = 0; j < sizeof(offsets) / sizeof(offsets[0]); ++j) + { + RunOperators(values[i], values[i]); + RunOperators(values[i], -values[i]); + RunOperators(values[i], values[j]); + RunOperators(values[i], -values[j]); + RunOperators(values[i] + values[j], values[j]); + RunOperators(values[i] + values[j], -values[j]); + RunOperators(values[i] - values[j], values[j]); + RunOperators(values[i] - values[j], -values[j]); + RunOperators(values[i] + values[j], values[i] + values[j]); + RunOperators(values[i] + values[j], values[i] - values[j]); + RunOperators(values[i] - values[j], values[i] + values[j]); + RunOperators(values[i] - values[j], values[i] - values[j]); + } + } +} + +BOOST_AUTO_TEST_SUITE_END() |