File: test_xcsv.cpp

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xtensor 0.25.0-2
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/***************************************************************************
 * Copyright (c) Johan Mabille, Sylvain Corlay and Wolf Vollprecht          *
 * Copyright (c) QuantStack                                                 *
 *                                                                          *
 * Distributed under the terms of the BSD 3-Clause License.                 *
 *                                                                          *
 * The full license is in the file LICENSE, distributed with this software. *
 ****************************************************************************/

#include <iostream>
#include <sstream>

#include "xtensor/xcsv.hpp"
#include "xtensor/xio.hpp"
#include "xtensor/xmath.hpp"

#include "test_common_macros.hpp"

namespace xt
{
    TEST(xcsv, load_double)
    {
        std::string source = "1.0, 2.0, 3.0, 4.0\n"
                             "10.0, 12.0, 15.0, 18.0";

        std::stringstream source_stream(source);

        xtensor<double, 2> res = load_csv<double>(source_stream);

        xtensor<double, 2> exp{{1.0, 2.0, 3.0, 4.0}, {10.0, 12.0, 15.0, 18.0}};

        ASSERT_TRUE(all(equal(res, exp)));
    }

    TEST(xcsv, load_double_with_options)
    {
        std::string source = "A B C D\n"
                             "#0.0 1.0 1.1 1.2\n"
                             "1.0 2.0 3.0 4.0\n"
                             "10.0 12.0 15.0 18.0\n"
                             "9.0, 8.0, 7.0, 6.";

        std::stringstream source_stream(source);

        auto res = load_csv<double>(source_stream, ' ', 1, 2, "#");

        xtensor<double, 2> exp{{1.0, 2.0, 3.0, 4.0}, {10.0, 12.0, 15.0, 18.0}};

        ASSERT_TRUE(all(equal(res, exp)));
    }

    TEST(xcsv, dump_double)
    {
        xtensor<double, 2> data{{1.0, 2.0, 3.0, 4.0}, {10.0, 12.0, 15.0, 18.0}};

        std::stringstream res;

        dump_csv(res, data);
        ASSERT_EQ("1,2,3,4\n10,12,15,18\n", res.str());
    }
}