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f081e80c286803376997d6dada95354f9040b112
rippled/src/ripple/protocol/tests/STAmount.test.cpp
Nik Bougalis f081e80c28 Remove legacy arbitrary precision integer support: 
The CBigNum class is a wrapper around OpenSSL's BIGNUM implementation
to make use simpler.

Replacing the implementation with boost::multiprecision helps reduce
the size of the codebase and improves performance (benchmarks show
the new boost-based implementation is ~7x faster).
2016-05-10 17:38:36 -04:00

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//------------------------------------------------------------------------------
/*
This file is part of rippled: https://github.com/ripple/rippled
Copyright (c) 2012, 2013 Ripple Labs Inc.
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
//==============================================================================
#include <BeastConfig.h>
#include <ripple/basics/Log.h>
#include <ripple/basics/random.h>
#include <ripple/protocol/STAmount.h>
#include <ripple/beast/unit_test.h>
namespace ripple {
class STAmount_test : public beast::unit_test::suite
{
public:
static STAmount serializeAndDeserialize (STAmount const& s)
{
Serializer ser;
s.add (ser);
SerialIter sit (ser.slice());
return STAmount(sit, sfGeneric);
}
//--------------------------------------------------------------------------
STAmount roundSelf (STAmount const& amount)
{
if (amount.native ())
return amount;
std::uint64_t mantissa = amount.mantissa ();
std::uint64_t valueDigits = mantissa % 1000000000;
if (valueDigits == 1)
{
mantissa--;
if (mantissa < STAmount::cMinValue)
return { amount.issue (), mantissa, amount.exponent (),
amount.negative () };
return { amount.issue (), mantissa, amount.exponent (),
amount.native(), amount.negative (), STAmount::unchecked {} };
}
if (valueDigits == 999999999)
{
mantissa++;
if (mantissa > STAmount::cMaxValue)
return { amount.issue (), mantissa, amount.exponent (),
amount.negative () };
return { amount.issue (), mantissa, amount.exponent (),
amount.native(), amount.negative (), STAmount::unchecked {} };
}
return amount;
}
void roundTest (int n, int d, int m)
{
// check STAmount rounding
STAmount num (noIssue(), n);
STAmount den (noIssue(), d);
STAmount mul (noIssue(), m);
STAmount quot = divide (n, d, noIssue());
STAmount res = roundSelf (multiply (quot, mul, noIssue()));
expect (! res.native (), "Product should not be native");
STAmount cmp (noIssue(), (n * m) / d);
expect (! cmp.native (), "Comparison amount should not be native");
expect (cmp.issue().currency == res.issue().currency,
"Product and result should be comparable");
if (res != cmp)
{
log <<
"(" << num.getText () << "/" << den.getText () <<
") X " << mul.getText () << " = " << res.getText () <<
" not " << cmp.getText ();
fail ("Rounding");
return;
}
}
void mulTest (int a, int b)
{
STAmount aa (noIssue(), a);
STAmount bb (noIssue(), b);
STAmount prod1 (multiply (aa, bb, noIssue()));
expect (! prod1.native ());
STAmount prod2 (noIssue(), static_cast<std::uint64_t> (a) * static_cast<std::uint64_t> (b));
if (prod1 != prod2)
{
log <<
"nn(" << aa.getFullText () << " * " << bb.getFullText () <<
") = " << prod1.getFullText () << " not " << prod2.getFullText ();
fail ("Multiplication result is not exact");
}
}
//--------------------------------------------------------------------------
void testSetValue (
std::string const& value, Issue const& issue, bool success = true)
{
try
{
STAmount const amount = amountFromString (issue, value);
expect (amount.getText () == value, "format " + value);
}
catch (std::exception const&)
{
expect (!success, "parse " + value + " should fail");
}
}
void testSetValue ()
{
{
testcase ("set value (native)");
Issue const xrp (xrpIssue ());
// fractional XRP (i.e. drops)
testSetValue ("1", xrp);
testSetValue ("22", xrp);
testSetValue ("333", xrp);
testSetValue ("4444", xrp);
testSetValue ("55555", xrp);
testSetValue ("666666", xrp);
// 1 XRP up to 100 billion, in powers of 10 (in drops)
testSetValue ("1000000", xrp);
testSetValue ("10000000", xrp);
testSetValue ("100000000", xrp);
testSetValue ("1000000000", xrp);
testSetValue ("10000000000", xrp);
testSetValue ("100000000000", xrp);
testSetValue ("1000000000000", xrp);
testSetValue ("10000000000000", xrp);
testSetValue ("100000000000000", xrp);
testSetValue ("1000000000000000", xrp);
testSetValue ("10000000000000000", xrp);
testSetValue ("100000000000000000", xrp);
// Invalid native values:
testSetValue ("1.1", xrp, false);
testSetValue ("100000000000000001", xrp, false);
testSetValue ("1000000000000000000", xrp, false);
}
{
testcase ("set value (iou)");
Issue const usd (Currency (0x5553440000000000), AccountID (0x4985601));
testSetValue ("1", usd);
testSetValue ("10", usd);
testSetValue ("100", usd);
testSetValue ("1000", usd);
testSetValue ("10000", usd);
testSetValue ("100000", usd);
testSetValue ("1000000", usd);
testSetValue ("10000000", usd);
testSetValue ("100000000", usd);
testSetValue ("1000000000", usd);
testSetValue ("10000000000", usd);
testSetValue ("1234567.1", usd);
testSetValue ("1234567.12", usd);
testSetValue ("1234567.123", usd);
testSetValue ("1234567.1234", usd);
testSetValue ("1234567.12345", usd);
testSetValue ("1234567.123456", usd);
testSetValue ("1234567.1234567", usd);
testSetValue ("1234567.12345678", usd);
testSetValue ("1234567.123456789", usd);
}
}
//--------------------------------------------------------------------------
void testNativeCurrency ()
{
testcase ("native currency");
STAmount zeroSt, one (1), hundred (100);
// VFALCO NOTE Why repeat "STAmount fail" so many times??
unexpected (serializeAndDeserialize (zeroSt) != zeroSt, "STAmount fail");
unexpected (serializeAndDeserialize (one) != one, "STAmount fail");
unexpected (serializeAndDeserialize (hundred) != hundred, "STAmount fail");
unexpected (!zeroSt.native (), "STAmount fail");
unexpected (!hundred.native (), "STAmount fail");
unexpected (zeroSt != zero, "STAmount fail");
unexpected (one == zero, "STAmount fail");
unexpected (hundred == zero, "STAmount fail");
unexpected ((zeroSt < zeroSt), "STAmount fail");
unexpected (! (zeroSt < one), "STAmount fail");
unexpected (! (zeroSt < hundred), "STAmount fail");
unexpected ((one < zeroSt), "STAmount fail");
unexpected ((one < one), "STAmount fail");
unexpected (! (one < hundred), "STAmount fail");
unexpected ((hundred < zeroSt), "STAmount fail");
unexpected ((hundred < one), "STAmount fail");
unexpected ((hundred < hundred), "STAmount fail");
unexpected ((zeroSt > zeroSt), "STAmount fail");
unexpected ((zeroSt > one), "STAmount fail");
unexpected ((zeroSt > hundred), "STAmount fail");
unexpected (! (one > zeroSt), "STAmount fail");
unexpected ((one > one), "STAmount fail");
unexpected ((one > hundred), "STAmount fail");
unexpected (! (hundred > zeroSt), "STAmount fail");
unexpected (! (hundred > one), "STAmount fail");
unexpected ((hundred > hundred), "STAmount fail");
unexpected (! (zeroSt <= zeroSt), "STAmount fail");
unexpected (! (zeroSt <= one), "STAmount fail");
unexpected (! (zeroSt <= hundred), "STAmount fail");
unexpected ((one <= zeroSt), "STAmount fail");
unexpected (! (one <= one), "STAmount fail");
unexpected (! (one <= hundred), "STAmount fail");
unexpected ((hundred <= zeroSt), "STAmount fail");
unexpected ((hundred <= one), "STAmount fail");
unexpected (! (hundred <= hundred), "STAmount fail");
unexpected (! (zeroSt >= zeroSt), "STAmount fail");
unexpected ((zeroSt >= one), "STAmount fail");
unexpected ((zeroSt >= hundred), "STAmount fail");
unexpected (! (one >= zeroSt), "STAmount fail");
unexpected (! (one >= one), "STAmount fail");
unexpected ((one >= hundred), "STAmount fail");
unexpected (! (hundred >= zeroSt), "STAmount fail");
unexpected (! (hundred >= one), "STAmount fail");
unexpected (! (hundred >= hundred), "STAmount fail");
unexpected (! (zeroSt == zeroSt), "STAmount fail");
unexpected ((zeroSt == one), "STAmount fail");
unexpected ((zeroSt == hundred), "STAmount fail");
unexpected ((one == zeroSt), "STAmount fail");
unexpected (! (one == one), "STAmount fail");
unexpected ((one == hundred), "STAmount fail");
unexpected ((hundred == zeroSt), "STAmount fail");
unexpected ((hundred == one), "STAmount fail");
unexpected (! (hundred == hundred), "STAmount fail");
unexpected ((zeroSt != zeroSt), "STAmount fail");
unexpected (! (zeroSt != one), "STAmount fail");
unexpected (! (zeroSt != hundred), "STAmount fail");
unexpected (! (one != zeroSt), "STAmount fail");
unexpected ((one != one), "STAmount fail");
unexpected (! (one != hundred), "STAmount fail");
unexpected (! (hundred != zeroSt), "STAmount fail");
unexpected (! (hundred != one), "STAmount fail");
unexpected ((hundred != hundred), "STAmount fail");
unexpected (STAmount ().getText () != "0", "STAmount fail");
unexpected (STAmount (31).getText () != "31", "STAmount fail");
unexpected (STAmount (310).getText () != "310", "STAmount fail");
unexpected (to_string (Currency ()) != "XRP", "cHC(XRP)");
Currency c;
unexpected (!to_currency (c, "USD"), "create USD currency");
unexpected (to_string (c) != "USD", "check USD currency");
const std::string cur = "015841551A748AD2C1F76FF6ECB0CCCD00000000";
unexpected (!to_currency (c, cur), "create custom currency");
unexpected (to_string (c) != cur, "check custom currency");
unexpected (c != Currency (
from_hex_text<Currency>(cur)), "check custom currency");
}
//--------------------------------------------------------------------------
void testCustomCurrency ()
{
testcase ("custom currency");
STAmount zeroSt (noIssue()), one (noIssue(), 1), hundred (noIssue(), 100);
unexpected (serializeAndDeserialize (zeroSt) != zeroSt, "STAmount fail");
unexpected (serializeAndDeserialize (one) != one, "STAmount fail");
unexpected (serializeAndDeserialize (hundred) != hundred, "STAmount fail");
unexpected (zeroSt.native (), "STAmount fail");
unexpected (hundred.native (), "STAmount fail");
unexpected (zeroSt != zero, "STAmount fail");
unexpected (one == zero, "STAmount fail");
unexpected (hundred == zero, "STAmount fail");
unexpected ((zeroSt < zeroSt), "STAmount fail");
unexpected (! (zeroSt < one), "STAmount fail");
unexpected (! (zeroSt < hundred), "STAmount fail");
unexpected ((one < zeroSt), "STAmount fail");
unexpected ((one < one), "STAmount fail");
unexpected (! (one < hundred), "STAmount fail");
unexpected ((hundred < zeroSt), "STAmount fail");
unexpected ((hundred < one), "STAmount fail");
unexpected ((hundred < hundred), "STAmount fail");
unexpected ((zeroSt > zeroSt), "STAmount fail");
unexpected ((zeroSt > one), "STAmount fail");
unexpected ((zeroSt > hundred), "STAmount fail");
unexpected (! (one > zeroSt), "STAmount fail");
unexpected ((one > one), "STAmount fail");
unexpected ((one > hundred), "STAmount fail");
unexpected (! (hundred > zeroSt), "STAmount fail");
unexpected (! (hundred > one), "STAmount fail");
unexpected ((hundred > hundred), "STAmount fail");
unexpected (! (zeroSt <= zeroSt), "STAmount fail");
unexpected (! (zeroSt <= one), "STAmount fail");
unexpected (! (zeroSt <= hundred), "STAmount fail");
unexpected ((one <= zeroSt), "STAmount fail");
unexpected (! (one <= one), "STAmount fail");
unexpected (! (one <= hundred), "STAmount fail");
unexpected ((hundred <= zeroSt), "STAmount fail");
unexpected ((hundred <= one), "STAmount fail");
unexpected (! (hundred <= hundred), "STAmount fail");
unexpected (! (zeroSt >= zeroSt), "STAmount fail");
unexpected ((zeroSt >= one), "STAmount fail");
unexpected ((zeroSt >= hundred), "STAmount fail");
unexpected (! (one >= zeroSt), "STAmount fail");
unexpected (! (one >= one), "STAmount fail");
unexpected ((one >= hundred), "STAmount fail");
unexpected (! (hundred >= zeroSt), "STAmount fail");
unexpected (! (hundred >= one), "STAmount fail");
unexpected (! (hundred >= hundred), "STAmount fail");
unexpected (! (zeroSt == zeroSt), "STAmount fail");
unexpected ((zeroSt == one), "STAmount fail");
unexpected ((zeroSt == hundred), "STAmount fail");
unexpected ((one == zeroSt), "STAmount fail");
unexpected (! (one == one), "STAmount fail");
unexpected ((one == hundred), "STAmount fail");
unexpected ((hundred == zeroSt), "STAmount fail");
unexpected ((hundred == one), "STAmount fail");
unexpected (! (hundred == hundred), "STAmount fail");
unexpected ((zeroSt != zeroSt), "STAmount fail");
unexpected (! (zeroSt != one), "STAmount fail");
unexpected (! (zeroSt != hundred), "STAmount fail");
unexpected (! (one != zeroSt), "STAmount fail");
unexpected ((one != one), "STAmount fail");
unexpected (! (one != hundred), "STAmount fail");
unexpected (! (hundred != zeroSt), "STAmount fail");
unexpected (! (hundred != one), "STAmount fail");
unexpected ((hundred != hundred), "STAmount fail");
unexpected (STAmount (noIssue()).getText () != "0", "STAmount fail");
unexpected (STAmount (noIssue(), 31).getText () != "31", "STAmount fail");
unexpected (STAmount (noIssue(), 31, 1).getText () != "310", "STAmount fail");
unexpected (STAmount (noIssue(), 31, -1).getText () != "3.1", "STAmount fail");
unexpected (STAmount (noIssue(), 31, -2).getText () != "0.31", "STAmount fail");
unexpected (multiply (STAmount (noIssue(), 20), STAmount (3), noIssue()).getText () != "60",
"STAmount multiply fail 1");
unexpected (multiply (STAmount (noIssue(), 20), STAmount (3), xrpIssue ()).getText () != "60",
"STAmount multiply fail 2");
unexpected (multiply (STAmount (20), STAmount (3), noIssue()).getText () != "60",
"STAmount multiply fail 3");
unexpected (multiply (STAmount (20), STAmount (3), xrpIssue ()).getText () != "60",
"STAmount multiply fail 4");
if (divide (STAmount (noIssue(), 60), STAmount (3), noIssue()).getText () != "20")
{
log << "60/3 = " <<
divide (STAmount (noIssue(), 60),
STAmount (3), noIssue()).getText ();
fail ("STAmount divide fail");
}
else
{
pass ();
}
unexpected (divide (STAmount (noIssue(), 60), STAmount (3), xrpIssue ()).getText () != "20",
"STAmount divide fail");
unexpected (divide (STAmount (noIssue(), 60), STAmount (noIssue(), 3), noIssue()).getText () != "20",
"STAmount divide fail");
unexpected (divide (STAmount (noIssue(), 60), STAmount (noIssue(), 3), xrpIssue ()).getText () != "20",
"STAmount divide fail");
STAmount a1 (noIssue(), 60), a2 (noIssue(), 10, -1);
unexpected (divide (a2, a1, noIssue()) != amountFromQuality (getRate (a1, a2)),
"STAmount setRate(getRate) fail");
unexpected (divide (a1, a2, noIssue()) != amountFromQuality (getRate (a2, a1)),
"STAmount setRate(getRate) fail");
}
//--------------------------------------------------------------------------
void testArithmetic ()
{
testcase ("arithmetic");
// Test currency multiplication and division operations such as
// convertToDisplayAmount, convertToInternalAmount, getRate, getClaimed, and getNeeded
unexpected (getRate (STAmount (1), STAmount (10)) != (((100ull - 14) << (64 - 8)) | 1000000000000000ull),
"STAmount getRate fail 1");
unexpected (getRate (STAmount (10), STAmount (1)) != (((100ull - 16) << (64 - 8)) | 1000000000000000ull),
"STAmount getRate fail 2");
unexpected (getRate (STAmount (noIssue(), 1), STAmount (noIssue(), 10)) != (((100ull - 14) << (64 - 8)) | 1000000000000000ull),
"STAmount getRate fail 3");
unexpected (getRate (STAmount (noIssue(), 10), STAmount (noIssue(), 1)) != (((100ull - 16) << (64 - 8)) | 1000000000000000ull),
"STAmount getRate fail 4");
unexpected (getRate (STAmount (noIssue(), 1), STAmount (10)) != (((100ull - 14) << (64 - 8)) | 1000000000000000ull),
"STAmount getRate fail 5");
unexpected (getRate (STAmount (noIssue(), 10), STAmount (1)) != (((100ull - 16) << (64 - 8)) | 1000000000000000ull),
"STAmount getRate fail 6");
unexpected (getRate (STAmount (1), STAmount (noIssue(), 10)) != (((100ull - 14) << (64 - 8)) | 1000000000000000ull),
"STAmount getRate fail 7");
unexpected (getRate (STAmount (10), STAmount (noIssue(), 1)) != (((100ull - 16) << (64 - 8)) | 1000000000000000ull),
"STAmount getRate fail 8");
roundTest (1, 3, 3);
roundTest (2, 3, 9);
roundTest (1, 7, 21);
roundTest (1, 2, 4);
roundTest (3, 9, 18);
roundTest (7, 11, 44);
for (int i = 0; i <= 100000; ++i)
{
mulTest (
rand_int(10000000),
rand_int(10000000));
}
}
//--------------------------------------------------------------------------
void testUnderflow ()
{
testcase ("underflow");
STAmount bigNative (STAmount::cMaxNative / 2);
STAmount bigValue (noIssue(),
(STAmount::cMinValue + STAmount::cMaxValue) / 2,
STAmount::cMaxOffset - 1);
STAmount smallValue (noIssue(),
(STAmount::cMinValue + STAmount::cMaxValue) / 2,
STAmount::cMinOffset + 1);
STAmount zeroSt (noIssue(), 0);
STAmount smallXsmall = multiply (smallValue, smallValue, noIssue());
expect (smallXsmall == zero, "smallXsmall != 0");
STAmount bigDsmall = divide (smallValue, bigValue, noIssue());
expect (bigDsmall == zero, "small/big != 0: " + bigDsmall.getText ());
expect (bigDsmall == zero,
"small/bigNative != 0: " + bigDsmall.getText ());
bigDsmall = divide (smallValue, bigValue, xrpIssue ());
expect (bigDsmall == zero,
"(small/big)->N != 0: " + bigDsmall.getText ());
bigDsmall = divide (smallValue, bigNative, xrpIssue ());
expect (bigDsmall == zero,
"(small/bigNative)->N != 0: " + bigDsmall.getText ());
// very bad offer
std::uint64_t r = getRate (smallValue, bigValue);
expect (r == 0, "getRate(smallOut/bigIn) != 0");
// very good offer
r = getRate (bigValue, smallValue);
expect (r == 0, "getRate(smallIn/bigOUt) != 0");
}
//--------------------------------------------------------------------------
void testRounding ()
{
// VFALCO TODO There are no actual tests here, just printed output?
// Change this to actually do something.
#if 0
beginTestCase ("rounding ");
std::uint64_t value = 25000000000000000ull;
int offset = -14;
canonicalizeRound (false, value, offset, true);
STAmount one (noIssue(), 1);
STAmount two (noIssue(), 2);
STAmount three (noIssue(), 3);
STAmount oneThird1 = divRound (one, three, noIssue(), false);
STAmount oneThird2 = divide (one, three, noIssue());
STAmount oneThird3 = divRound (one, three, noIssue(), true);
log << oneThird1;
log << oneThird2;
log << oneThird3;
STAmount twoThird1 = divRound (two, three, noIssue(), false);
STAmount twoThird2 = divide (two, three, noIssue());
STAmount twoThird3 = divRound (two, three, noIssue(), true);
log << twoThird1;
log << twoThird2;
log << twoThird3;
STAmount oneA = mulRound (oneThird1, three, noIssue(), false);
STAmount oneB = multiply (oneThird2, three, noIssue());
STAmount oneC = mulRound (oneThird3, three, noIssue(), true);
log << oneA;
log << oneB;
log << oneC;
STAmount fourThirdsB = twoThird2 + twoThird2;
log << fourThirdsA;
log << fourThirdsB;
log << fourThirdsC;
STAmount dripTest1 = mulRound (twoThird2, two, xrpIssue (), false);
STAmount dripTest2 = multiply (twoThird2, two, xrpIssue ());
STAmount dripTest3 = mulRound (twoThird2, two, xrpIssue (), true);
log << dripTest1;
log << dripTest2;
log << dripTest3;
#endif
}
void
testConvertXRP ()
{
testcase ("STAmount to XRPAmount conversions");
Issue const usd { Currency (0x5553440000000000), AccountID (0x4985601) };
Issue const xrp { xrpIssue () };
for (std::uint64_t drops = 100000000000000000; drops != 1; drops = drops / 10)
{
auto const t = amountFromString (xrp, std::to_string (drops));
auto const s = t.xrp ();
expect (s.drops() == drops);
expect (t == STAmount (XRPAmount (drops)));
expect (s == XRPAmount (drops));
}
try
{
auto const t = amountFromString (usd, "136500");
fail (to_string (t.xrp ()));
}
catch (std::logic_error const&)
{
pass ();
}
catch (std::exception const&)
{
fail ("wrong exception");
}
}
void
testConvertIOU ()
{
testcase ("STAmount to IOUAmount conversions");
Issue const usd { Currency (0x5553440000000000), AccountID (0x4985601) };
Issue const xrp { xrpIssue () };
for (std::uint64_t dollars = 10000000000; dollars != 1; dollars = dollars / 10)
{
auto const t = amountFromString (usd, std::to_string (dollars));
auto const s = t.iou ();
expect (t == STAmount (s, usd));
expect (s.mantissa () == t.mantissa ());
expect (s.exponent () == t.exponent ());
}
try
{
auto const t = amountFromString (xrp, "136500");
fail (to_string (t.iou ()));
}
catch (std::logic_error const&)
{
pass ();
}
catch (std::exception const&)
{
fail ("wrong exception");
}
}
//--------------------------------------------------------------------------
void run ()
{
testSetValue ();
testNativeCurrency ();
testCustomCurrency ();
testArithmetic ();
testUnderflow ();
testRounding ();
testConvertXRP ();
testConvertIOU ();
}
};
BEAST_DEFINE_TESTSUITE(STAmount,ripple_data,ripple);
} // ripple
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