mirror of
https://github.com/XRPLF/rippled.git
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ea1fffeebf
Adds two CMake functions:
* add_module(library subdirectory): Declares an OBJECT "library" (a CMake abstraction for a collection of object files) with sources from the given subdirectory of the given library, representing a module. Isolates the module's headers by creating a subdirectory in the build directory, e.g. .build/tmp123, that contains just a symlink, e.g. .build/tmp123/basics, to the module's header directory, e.g. include/xrpl/basics, in the source directory, and putting .build/tmp123 (but not include/xrpl) on the include path of the module sources. This prevents the module sources from including headers not explicitly linked to the module in CMake with target_link_libraries.
* target_link_modules(library scope modules...): Links the library target to each of the module targets, and removes their sources from its source list (so they are not compiled and linked twice).
Uses these functions to separate and explicitly link modules in libxrpl:
Level 01: beast
Level 02: basics
Level 03: json, crypto
Level 04: protocol
Level 05: resource, server
275 lines
8.5 KiB
C++
275 lines
8.5 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of rippled: https://github.com/ripple/rippled
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Copyright (c) 2012, 2013 Ripple Labs Inc.
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#include <xrpl/beast/unit_test.h>
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#include <xrpl/protocol/IOUAmount.h>
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namespace ripple {
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class IOUAmount_test : public beast::unit_test::suite
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{
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public:
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void
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testZero()
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{
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testcase("zero");
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IOUAmount const z(0, 0);
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BEAST_EXPECT(z.mantissa() == 0);
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BEAST_EXPECT(z.exponent() == -100);
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BEAST_EXPECT(!z);
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BEAST_EXPECT(z.signum() == 0);
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BEAST_EXPECT(z == beast::zero);
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BEAST_EXPECT((z + z) == z);
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BEAST_EXPECT((z - z) == z);
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BEAST_EXPECT(z == -z);
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IOUAmount const zz(beast::zero);
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BEAST_EXPECT(z == zz);
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}
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void
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testSigNum()
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{
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testcase("signum");
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IOUAmount const neg(-1, 0);
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BEAST_EXPECT(neg.signum() < 0);
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IOUAmount const zer(0, 0);
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BEAST_EXPECT(zer.signum() == 0);
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IOUAmount const pos(1, 0);
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BEAST_EXPECT(pos.signum() > 0);
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}
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void
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testBeastZero()
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{
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testcase("beast::Zero Comparisons");
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using beast::zero;
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{
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IOUAmount z(zero);
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BEAST_EXPECT(z == zero);
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BEAST_EXPECT(z >= zero);
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BEAST_EXPECT(z <= zero);
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unexpected(z != zero);
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unexpected(z > zero);
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unexpected(z < zero);
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}
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{
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IOUAmount const neg(-2, 0);
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BEAST_EXPECT(neg < zero);
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BEAST_EXPECT(neg <= zero);
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BEAST_EXPECT(neg != zero);
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unexpected(neg == zero);
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}
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{
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IOUAmount const pos(2, 0);
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BEAST_EXPECT(pos > zero);
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BEAST_EXPECT(pos >= zero);
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BEAST_EXPECT(pos != zero);
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unexpected(pos == zero);
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}
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}
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void
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testComparisons()
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{
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testcase("IOU Comparisons");
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IOUAmount const n(-2, 0);
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IOUAmount const z(0, 0);
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IOUAmount const p(2, 0);
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BEAST_EXPECT(z == z);
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BEAST_EXPECT(z >= z);
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BEAST_EXPECT(z <= z);
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BEAST_EXPECT(z == -z);
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unexpected(z > z);
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unexpected(z < z);
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unexpected(z != z);
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unexpected(z != -z);
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BEAST_EXPECT(n < z);
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BEAST_EXPECT(n <= z);
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BEAST_EXPECT(n != z);
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unexpected(n > z);
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unexpected(n >= z);
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unexpected(n == z);
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BEAST_EXPECT(p > z);
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BEAST_EXPECT(p >= z);
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BEAST_EXPECT(p != z);
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unexpected(p < z);
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unexpected(p <= z);
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unexpected(p == z);
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BEAST_EXPECT(n < p);
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BEAST_EXPECT(n <= p);
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BEAST_EXPECT(n != p);
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unexpected(n > p);
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unexpected(n >= p);
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unexpected(n == p);
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BEAST_EXPECT(p > n);
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BEAST_EXPECT(p >= n);
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BEAST_EXPECT(p != n);
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unexpected(p < n);
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unexpected(p <= n);
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unexpected(p == n);
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BEAST_EXPECT(p > -p);
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BEAST_EXPECT(p >= -p);
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BEAST_EXPECT(p != -p);
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BEAST_EXPECT(n < -n);
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BEAST_EXPECT(n <= -n);
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BEAST_EXPECT(n != -n);
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}
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void
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testToString()
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{
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testcase("IOU strings");
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BEAST_EXPECT(to_string(IOUAmount(-2, 0)) == "-2");
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BEAST_EXPECT(to_string(IOUAmount(0, 0)) == "0");
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BEAST_EXPECT(to_string(IOUAmount(2, 0)) == "2");
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BEAST_EXPECT(to_string(IOUAmount(25, -3)) == "0.025");
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BEAST_EXPECT(to_string(IOUAmount(-25, -3)) == "-0.025");
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BEAST_EXPECT(to_string(IOUAmount(25, 1)) == "250");
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BEAST_EXPECT(to_string(IOUAmount(-25, 1)) == "-250");
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BEAST_EXPECT(to_string(IOUAmount(2, 20)) == "2000000000000000e5");
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BEAST_EXPECT(to_string(IOUAmount(-2, -20)) == "-2000000000000000e-35");
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}
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void
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testMulRatio()
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{
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testcase("mulRatio");
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/* The range for the mantissa when normalized */
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constexpr std::int64_t minMantissa = 1000000000000000ull;
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constexpr std::int64_t maxMantissa = 9999999999999999ull;
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// log(2,maxMantissa) ~ 53.15
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/* The range for the exponent when normalized */
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constexpr int minExponent = -96;
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constexpr int maxExponent = 80;
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constexpr auto maxUInt = std::numeric_limits<std::uint32_t>::max();
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{
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// multiply by a number that would overflow the mantissa, then
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// divide by the same number, and check we didn't lose any value
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IOUAmount bigMan(maxMantissa, 0);
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BEAST_EXPECT(bigMan == mulRatio(bigMan, maxUInt, maxUInt, true));
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// rounding mode shouldn't matter as the result is exact
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BEAST_EXPECT(bigMan == mulRatio(bigMan, maxUInt, maxUInt, false));
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}
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{
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// Similar test as above, but for negative values
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IOUAmount bigMan(-maxMantissa, 0);
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BEAST_EXPECT(bigMan == mulRatio(bigMan, maxUInt, maxUInt, true));
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// rounding mode shouldn't matter as the result is exact
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BEAST_EXPECT(bigMan == mulRatio(bigMan, maxUInt, maxUInt, false));
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}
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{
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// small amounts
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IOUAmount tiny(minMantissa, minExponent);
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// Round up should give the smallest allowable number
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BEAST_EXPECT(tiny == mulRatio(tiny, 1, maxUInt, true));
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BEAST_EXPECT(tiny == mulRatio(tiny, maxUInt - 1, maxUInt, true));
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// rounding down should be zero
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BEAST_EXPECT(beast::zero == mulRatio(tiny, 1, maxUInt, false));
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BEAST_EXPECT(
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beast::zero == mulRatio(tiny, maxUInt - 1, maxUInt, false));
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// tiny negative numbers
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IOUAmount tinyNeg(-minMantissa, minExponent);
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// Round up should give zero
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BEAST_EXPECT(beast::zero == mulRatio(tinyNeg, 1, maxUInt, true));
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BEAST_EXPECT(
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beast::zero == mulRatio(tinyNeg, maxUInt - 1, maxUInt, true));
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// rounding down should be tiny
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BEAST_EXPECT(tinyNeg == mulRatio(tinyNeg, 1, maxUInt, false));
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BEAST_EXPECT(
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tinyNeg == mulRatio(tinyNeg, maxUInt - 1, maxUInt, false));
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}
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{ // rounding
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{
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IOUAmount one(1, 0);
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auto const rup = mulRatio(one, maxUInt - 1, maxUInt, true);
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auto const rdown = mulRatio(one, maxUInt - 1, maxUInt, false);
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BEAST_EXPECT(rup.mantissa() - rdown.mantissa() == 1);
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}
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{
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IOUAmount big(maxMantissa, maxExponent);
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auto const rup = mulRatio(big, maxUInt - 1, maxUInt, true);
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auto const rdown = mulRatio(big, maxUInt - 1, maxUInt, false);
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BEAST_EXPECT(rup.mantissa() - rdown.mantissa() == 1);
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}
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{
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IOUAmount negOne(-1, 0);
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auto const rup = mulRatio(negOne, maxUInt - 1, maxUInt, true);
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auto const rdown =
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mulRatio(negOne, maxUInt - 1, maxUInt, false);
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BEAST_EXPECT(rup.mantissa() - rdown.mantissa() == 1);
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}
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}
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{
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// division by zero
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IOUAmount one(1, 0);
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except([&] { mulRatio(one, 1, 0, true); });
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}
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{
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// overflow
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IOUAmount big(maxMantissa, maxExponent);
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except([&] { mulRatio(big, 2, 0, true); });
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}
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} // namespace ripple
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//--------------------------------------------------------------------------
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void
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run() override
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{
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testZero();
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testSigNum();
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testBeastZero();
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testComparisons();
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testToString();
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testMulRatio();
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}
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};
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BEAST_DEFINE_TESTSUITE(IOUAmount, protocol, ripple);
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} // namespace ripple
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