Add the class TestUtil, that provides functions used in several unit
tests. For the moment, it contains two function:
- fill_file(), that creates and fills a test file.
- remove_file(), that deletes a test file.
InputCSV:
- Add eof_close() to automatically close the file when EOF is reached.
- Add read_next_line(), that read the next non-blank line and skips
blank characters.
- Add current_line, a string containing the current line data.
- Update unit test.
InputMedium:
- Rename InputMedium::current_line to current_line_nb.
Matteo Cypriani