c-resources/CPlusPlus20ForProgrammers-m.../examples/libraries/rapidcsv/tests/test050.cpp

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2024-04-09 06:45:18 +00:00
// test050.cpp - read column header / label by index
#include <rapidcsv.h>
#include "unittest.h"
int main()
{
int rv = 0;
std::string csv =
"-,A,B,C\n"
"1,3,9,81\n"
"2,4,16,256\n"
;
std::string path = unittest::TempPath();
unittest::WriteFile(path, csv);
try
{
rapidcsv::Document doc(path, rapidcsv::LabelParams(0, 0));
unittest::ExpectEqual(std::string, doc.GetColumnName(0), "A");
unittest::ExpectEqual(std::string, doc.GetColumnName(1), "B");
unittest::ExpectEqual(std::string, doc.GetColumnName(2), "C");
ExpectException(doc.GetColumnName(3), std::out_of_range);
rapidcsv::Document doc2(path, rapidcsv::LabelParams(-1, -1));
ExpectException(doc2.GetColumnName(0), std::out_of_range);
rapidcsv::Document doc3(path, rapidcsv::LabelParams(0, -1));
unittest::ExpectEqual(std::string, doc3.GetColumnName(0), "-");
unittest::ExpectEqual(std::string, doc3.GetColumnName(1), "A");
unittest::ExpectEqual(std::string, doc3.GetColumnName(2), "B");
unittest::ExpectEqual(std::string, doc3.GetColumnName(3), "C");
ExpectException(doc3.GetColumnName(4), std::out_of_range);
}
catch (const std::exception& ex)
{
std::cout << ex.what() << std::endl;
rv = 1;
}
unittest::DeleteFile(path);
return rv;
}