static void test_sub_expr() {
char c_str[100] = "4 - x";
total++;
cout << "test_sub_expr:\t\t\t\t";
Math_Parser *p = new Math_Parser(c_str);
Expression *e = p->Parse_Expression();
if (!dynamic_cast<Term_Expr *>(e)) {
cout << "FAIL\r\n";
delete p;
delete e;
return;
}
Term_Expr *t = dynamic_cast<Term_Expr *>(e);
if (!dynamic_cast<Constant *>(t->LHS)) {
cout << "FAIL\r\n";
delete p;
delete e;
return;
}
Constant *c = dynamic_cast<Constant *>(t->LHS);
if (c->getValue() != 4 || !dynamic_cast<Sub_Expr *>(t->RHS)) {
cout << "FAIL\r\n";
delete p;
delete e;
return;
}
Sub_Expr *m = dynamic_cast<Sub_Expr *>(t->RHS);
if (!dynamic_cast<Term_Expr *>(m->RHS)) {
cout << "FAIL\r\n";
delete p;
delete e;
return;
}
t = dynamic_cast<Term_Expr *>(m->RHS);
if (!dynamic_cast<Variable *>(t->LHS) || t->RHS != NULL) {
cout << "FAIL\r\n";
delete p;
delete e;
return;
}
Variable *v = dynamic_cast<Variable *>(t->LHS);
if (v->toString() != "x") {
cout << "FAIL\r\n";
delete p;
delete e;
return;
}
if (e->toString() != "4 - x") {
cout << "FAIL\r\n";
delete p;
delete e;
return;
}
cout << "PASS\r\n";
passed++;
delete p;
delete e;
return;
}