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/*
Gordon's Text-Utilities Library
Copyright (C) 2009 Assaf Gordon (gordon@cshl.edu)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>
*/
#include <err.h>
#include <iostream>
#include <string>
#include <gtextutils/stream_wrapper.h>
#include <gtextutils/text_line_reader.h>
#include "tests_assertion.h"
/*
* Testing the TextLineReader class
*
* Read four lines from a known file,
* using different methods
*/
using namespace std;
int main()
{
InputStreamWrapper input("test.txt");
TextLineReader reader ( input.stream() );
string line ;
ASSERT ( reader.next_line() );
line = reader.line_string() ; //first line - with explicit method to get the string
ASSERT( line == "first line" ) ;
ASSERT ( reader.next_line() );
line = reader ; //second line - with implicit conversion to std::string
ASSERT( line == "second line" ) ;
ASSERT ( reader.next_line() );
istream &is1 ( reader.line_stream() ); //third line - with explicit method to get the istream
is1 >> line ; // read each word from the line
ASSERT( line == "third" ) ;
is1 >> line ;
ASSERT ( line == "line" ) ;
is1 >> line ; // read past the end of the line - this should fail (and not read the next word from the next line, as it would have happened with a normal istream;
ASSERT ( ! is1 ) ;
ASSERT ( reader.next_line() );
istream &is2 ( reader ) ; // fourth line - with implicit conversion to std::istream
is2 >> line ;
ASSERT( line == "fourth" ) ;
is2 >> line ;
ASSERT( line == "line" ) ;
is1 >> line ; // read past the end of the line - this should fail (and not read the next word from the next line
ASSERT ( !is2 ) ;
//read past the end of the file - make sure it fails.
ASSERT ( !reader.next_line() ) ;
return 0;
}
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