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https://github.com/dashpay/dash.git
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0fa593d0fb
Special serializer/deserializer for amount values. It is optimized for values which have few non-zero digits in decimal representation. Most amounts currently in the txout set take only 1 or 2 bytes to represent.
63 lines
1.6 KiB
C++
63 lines
1.6 KiB
C++
#include <boost/test/unit_test.hpp>
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#include <string>
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#include <vector>
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#include "main.h"
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// amounts 0.00000001 .. 0.00100000
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#define NUM_MULTIPLES_UNIT 100000
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// amounts 0.01 .. 100.00
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#define NUM_MULTIPLES_CENT 10000
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// amounts 1 .. 10000
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#define NUM_MULTIPLES_1BTC 10000
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// amounts 50 .. 21000000
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#define NUM_MULTIPLES_50BTC 420000
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using namespace std;
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BOOST_AUTO_TEST_SUITE(compress_tests)
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bool static TestEncode(uint64 in) {
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return in == CTxOutCompressor::DecompressAmount(CTxOutCompressor::CompressAmount(in));
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}
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bool static TestDecode(uint64 in) {
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return in == CTxOutCompressor::CompressAmount(CTxOutCompressor::DecompressAmount(in));
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}
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bool static TestPair(uint64 dec, uint64 enc) {
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return CTxOutCompressor::CompressAmount(dec) == enc &&
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CTxOutCompressor::DecompressAmount(enc) == dec;
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}
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BOOST_AUTO_TEST_CASE(compress_amounts)
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{
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BOOST_CHECK(TestPair( 0, 0x0));
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BOOST_CHECK(TestPair( 1, 0x1));
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BOOST_CHECK(TestPair( CENT, 0x7));
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BOOST_CHECK(TestPair( COIN, 0x9));
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BOOST_CHECK(TestPair( 50*COIN, 0x32));
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BOOST_CHECK(TestPair(21000000*COIN, 0x1406f40));
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for (uint64 i = 1; i <= NUM_MULTIPLES_UNIT; i++)
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BOOST_CHECK(TestEncode(i));
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for (uint64 i = 1; i <= NUM_MULTIPLES_CENT; i++)
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BOOST_CHECK(TestEncode(i * CENT));
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for (uint64 i = 1; i <= NUM_MULTIPLES_1BTC; i++)
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BOOST_CHECK(TestEncode(i * COIN));
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for (uint64 i = 1; i <= NUM_MULTIPLES_50BTC; i++)
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BOOST_CHECK(TestEncode(i * 50 * COIN));
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for (uint64 i = 0; i < 100000; i++)
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BOOST_CHECK(TestDecode(i));
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}
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BOOST_AUTO_TEST_SUITE_END()
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