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use crate::{
ashes::{Ashes, BranchId},
fire::{self, ForestFire},
};
#[test]
fn empty() {
let fire = ForestFire::<u32>::new();
let ashes = fire.burn();
assert!(ashes.root_children().is_empty());
assert!(ashes.nodes.is_empty())
}
fn make_convoluted() -> ForestFire<u32> {
let mut fire = ForestFire::<u32>::new();
/*
x(0):
xx(1):
xxx(6)
xy(5)
y(2):
yx(3):
yxx(4)
*/
#[allow(unused)]
{
// these are intentionally in a weird order to make it less
// likely for the tree to accidentally work due to ordering
let x = fire.branch(fire::BranchId::ROOT, 0);
let xx = fire.branch(x, 1);
let y = fire.branch(fire::BranchId::ROOT, 2);
let yx = fire.branch(y, 3);
let yxx = fire.branch(yx, 4);
let xy = fire.branch(x, 5);
let xxx = fire.branch(xx, 6);
}
fire
}
fn assert_convoluted(ashes: &Ashes<u32>) {
{
let root = ashes.branch(BranchId::ROOT);
assert_eq!(root.payload(), None);
{
let x = ashes.branch(root.child(0));
assert_eq!(x.payload(), Some(&0));
{
let xx = ashes.branch(x.child(0));
assert_eq!(xx.payload(), Some(&1));
{
let xxx = ashes.branch(xx.child(0));
assert_eq!(xxx.payload(), Some(&6));
assert_eq!(xxx.n_children(), 0);
}
assert_eq!(xx.n_children(), 1);
}
{
let xy = ashes.branch(x.child(1));
assert_eq!(xy.payload(), Some(&5));
assert_eq!(xy.n_children(), 0);
}
assert_eq!(x.n_children(), 2);
}
{
let y = ashes.branch(root.child(1));
assert_eq!(y.payload(), Some(&2));
{
let yx = ashes.branch(y.child(0));
assert_eq!(yx.payload(), Some(&3));
{
let yxx = ashes.branch(yx.child(0));
assert_eq!(yxx.payload(), Some(&4));
assert_eq!(yxx.n_children(), 0);
}
assert_eq!(yx.n_children(), 1);
}
assert_eq!(y.n_children(), 1);
}
}
}
#[test]
fn convoluted() {
let fire = make_convoluted();
let ashes = fire.burn();
println!("{ashes:#?}\n{}", ashes.print_tree_display());
assert_convoluted(&ashes);
}
#[cfg(feature = "serde")]
mod serde {
use serde_json::json;
use crate::{
ashes::{Ashes, BranchId},
test::{assert_convoluted, make_convoluted},
};
#[test]
fn json_de() {
let json = json!({
"1": {
"v": 0,
"0": {
"v": 1
}
},
"0": {
"1": {
"v": 2,
},
"v": 3,
"0": {
"v": 3
},
"2": {
"v": 4
}
}
});
let ashes = serde_json::from_value::<Ashes<u32>>(json).unwrap();
println!("deserialized {ashes:#?}");
let root = ashes.branch(BranchId::ROOT);
assert_eq!(root.payload(), None);
{
let x = ashes.branch(root.child(0));
assert_eq!(x.payload(), Some(&3));
{
let xx = ashes.branch(x.child(0));
assert_eq!(xx.payload(), Some(&3));
assert_eq!(xx.n_children(), 0);
}
{
let xy = ashes.branch(x.child(1));
assert_eq!(xy.payload(), Some(&2));
assert_eq!(xy.n_children(), 0);
}
{
let xz = ashes.branch(x.child(2));
assert_eq!(xz.payload(), Some(&4));
assert_eq!(xz.n_children(), 0);
}
assert_eq!(x.n_children(), 3);
}
{
let y = ashes.branch(root.child(1));
assert_eq!(y.payload(), Some(&0));
{
let yx = ashes.branch(y.child(0));
assert_eq!(yx.payload(), Some(&1));
assert_eq!(yx.n_children(), 0);
}
assert_eq!(y.n_children(), 1);
}
}
#[test]
fn json_ser_and_de() {
// ashes to value, value to ashes
// ashes to ashes, dust to dust (or whatever)
let fire = make_convoluted();
let ashes = fire.burn();
let value = serde_json::to_value(&ashes).unwrap();
println!("serialized {value:#}");
assert_eq!(
value,
json!({
"0": {
// x
"v": 0,
"0": {
// xx
"v": 1,
"0": {
// xxx
"v": 6
}
},
"1": {
// xy
"v": 5
}
},
"1": {
// y
"v": 2,
"0": {
// yx
"v": 3,
"0": {
// yxx
"v": 4,
}
}
}
}),
);
let ashes: Ashes<u32> = serde_json::from_value(value).unwrap();
println!("deserialized {ashes:#?}");
assert_convoluted(&ashes);
}
}