public static void TestWhiteSpaceRemoval()
{
string formula = "ab cd";
AssertSameValue(SolverTools.RemoveWhiteSpace(formula), "abcd");
formula = "'ab cd'";
AssertSameValue(SolverTools.RemoveWhiteSpace(formula), "'ab cd'");
formula = " 'ab cd' ";
AssertSameValue(SolverTools.RemoveWhiteSpace(formula), "'ab cd'");
formula = " 'ab\\' cd ' ";
AssertSameValue(SolverTools.RemoveWhiteSpace(formula), "'ab\\' cd '");
}