public string toSql()
{
StringTheory theory = new StringTheory(this);
string phrase = "'";
theory.Replace(phrase, phrase + phrase);
theory.SingleQuote();
return(theory.ToString());
}
public void testSingleQuote()
{
string str = "'abcdef'";
StringTheory theory = new StringTheory("abcdef");
theory.SingleQuote();
Assert.True(str.Equals(theory.ToString()), "str doesn't match the comparison string!");
}