Test for asset::amount_to_string

asset_tests.cpp

/*
 * Copyright (c) 2018 Bitshares Foundation, and contributors.
 *
 * The MIT License
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#include <boost/test/unit_test.hpp>
#include <string>
#include <cmath>
#include <graphene/chain/asset_object.hpp>

BOOST_AUTO_TEST_SUITE(asset_tests)

std::string convert_and_strip_zeros(long double val, int precision)
{
   std::stringstream ss;
   ss.precision(precision + 5);
   ss << val;
   return ss.str();
}

BOOST_AUTO_TEST_CASE( asset_to_from_string )
{
   graphene::chain::asset_object obj1;
   graphene::chain::share_type amt12345 = 12345;
   BOOST_TEST_MESSAGE( "Testing positive numbers" );
   for (int i = 0; i < 19; i++)
   {
      obj1.precision = i;
      std::string expectedResult = convert_and_strip_zeros(amt12345.value * pow(10, i * -1), i);
      BOOST_CHECK_EQUAL(expectedResult, obj1.amount_to_string(amt12345));
   }
   BOOST_TEST_MESSAGE( "Testing negative numbers" );
   for (int i = 0; i < 19; i++)
   {
      obj1.precision = i;
      std::string expectedResult = convert_and_strip_zeros(amt12345.value * pow(10, i * -1) * -1, i);
      BOOST_CHECK_EQUAL(expectedResult, obj1.amount_to_string(amt12345 * -1));
   }
}

BOOST_AUTO_TEST_SUITE_END()