+ t::lib::Mocks::mock_preference('CSVDelimiter', '#');
+ is($plugin->CSVDelimiter(undef), '#', "CSVDelimiter(arg) returns preference value when arg is undefined");
+ is($plugin->CSVDelimiter(''), '#', "CSVDelimiter(arg) returns preference value when arg is empty string");
+ is($plugin->CSVDelimiter(','), ',', "CSVDelimiter(arg) returns arg value when arg is not tabulation");
+ is($plugin->CSVDelimiter('tabulation'), "\t", "CSVDelimiter(arg) returns \\t value when arg is tabulation");