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extern crate modelthing;
use std::collections::HashSet;
use std::iter::FromIterator;
use modelthing::modelica_ast::*;
fn set_eq(a: Vec<String>, b: Vec<String>) -> bool {
let set_a: HashSet<String> = HashSet::from_iter(a);
let set_b: HashSet<String> = HashSet::from_iter(b);
return set_a == set_b;
}
#[test]
fn test_expr_identifiers() {
use modelthing::modelica_ast::Expr::*;
assert!(set_eq(
vec![],
Integer(0).identifiers()));
assert!(set_eq(
vec!["x".to_string()],
Ident("x".to_string()).identifiers()));
assert!(set_eq(
vec!["x".to_string(), "y".to_string(), "z".to_string()],
BinExpr(BinOperator::Add,
Box::new(Abs(Box::new(Ident("z".to_string())))),
Box::new(BinExpr(BinOperator::Add,
Box::new(Abs(Box::new(Ident("x".to_string())))),
Box::new(Abs(Box::new(Ident("y".to_string()))))))).identifiers()));
assert!(set_eq(
vec!["z".to_string()],
BinExpr(BinOperator::Add,
Box::new(Ident("z".to_string())),
Box::new(Ident("z".to_string()))).identifiers()));
}
#[test]
fn test_eqn_identifiers() {
use modelthing::modelica_ast::Expr::*;
assert!(set_eq(
vec![],
SimpleEquation{
lhs: Integer(0),
rhs: Integer(0),
}.identifiers()));
assert!(set_eq(
vec!["z".to_string()],
SimpleEquation{
lhs: Ident("z".to_string()),
rhs: BinExpr(BinOperator::Add,
Box::new(Ident("z".to_string())),
Box::new(Ident("z".to_string()))),
}.identifiers()));
}
#[test]
fn test_rebalance_for() {
use modelthing::modelica_ast::Expr::*;
// z = a - 1.2345
// a = z + 1.2345
let done = SimpleEquation{
lhs: Ident("z".to_string()),
rhs: BinExpr(BinOperator::Subtract,
Box::new(Ident("a".to_string())),
Box::new(Float(1.2345)))};
assert_eq!(done,
done.rebalance_for("z".to_string()).unwrap());
assert_eq!(SimpleEquation{
lhs: Ident("a".to_string()),
rhs: BinExpr(BinOperator::Add,
Box::new(Ident("z".to_string())),
Box::new(Float(1.2345)))},
done.rebalance_for("a".to_string()).unwrap());
}
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