public static void TestGlobalConstants()
{
ExpressionSolver solver = new ExpressionSolver();
solver.SetGlobalVariable("test",1);
var exp1 = solver.SymbolicateExpression("test+1");
AssertSameValue(2.0,exp1.Evaluate());
solver.SetGlobalVariable("test",2);
var exp2 = solver.SymbolicateExpression("test+1");
AssertSameValue(3.0,exp2.Evaluate());
AssertSameValue(exp1.Evaluate(),exp2.Evaluate());
}