CTextFileLinesParser_unittest.cpp

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/* +------------------------------------------------------------------------+
   |                     Mobile Robot Programming Toolkit (MRPT)            |
   |                          https://www.mrpt.org/                         |
   |                                                                        |
   | Copyright (c) 2005-2020, Individual contributors, see AUTHORS file     |
   | See: https://www.mrpt.org/Authors - All rights reserved.               |
   | Released under BSD License. See: https://www.mrpt.org/License          |
   +------------------------------------------------------------------------+ */

#include <gtest/gtest.h>
#include <mrpt/core/common.h>
#include <mrpt/io/CTextFileLinesParser.h>
#include <sstream>

TEST(CTextFileLinesParser, parse)
{
    std::stringstream ss;
    ss << "1st line\n"
          "2nd line\n"
          "# comment\n"
          "3rd line";
    ss.seekg(0);  // rewind

    mrpt::io::CTextFileLinesParser parser(ss);
    parser.enableCommentFilters(true, true, true);

    std::string line;
    bool ret = parser.getNextLine(line);
    EXPECT_TRUE(ret);
    EXPECT_EQ(parser.getCurrentLineNumber(), 1U);
    EXPECT_EQ(line, "1st line");

    ret = parser.getNextLine(line);
    EXPECT_TRUE(ret);
    EXPECT_EQ(parser.getCurrentLineNumber(), 2U);
    EXPECT_EQ(line, "2nd line");

    ret = parser.getNextLine(line);
    EXPECT_TRUE(ret);
    EXPECT_EQ(parser.getCurrentLineNumber(), 4U);

    EXPECT_EQ(line, "3rd line");

    // EOF:
    EXPECT_FALSE(parser.getNextLine(line));
}