Files
iris/tests/layout_dump.rs
T
iris-ai ea1f836bf9 Say the environment once, and stop a hint read going uncounted
The eleventh sweep, over the built-in bounds work in 2ac0843.

`Painter::size_hint` refused to answer for a bounded widget by returning
above the diagnostics, so that read was neither a hint hit nor a miss and
`hint_read` recorded nothing. It is a miss now, with the reason on it.

The two `for axis in Axis::BOTH` loops that `draw_widget` grew, both
writing `own_holds`, are one loop, and the comment about combining the
ask's holds no longer sits between a comment and the code it describes.

`Declared::from_axes` lost its only caller with `Widgets::declared_lens`;
`Bounds::from_axes` and `SizeRule::declared` never had one.

The scenario shrinker printed a rule with derived `Debug`, which is 130
characters an axis in a line that carries every ancestor, in the one
function whose job is output a tree can be rebuilt from. It prints its
parts again.

`bounds_cost` invented three environment-reading spellings where four
copies of one `env` helper already existed; there is now one, in
`tests/rig`, and the four copies are gone. It also verified 128 regions
inside its measured loop, which the other rigs deliberately do before
theirs; that measured 0.65% of the total, and none of it is layout.

The 250-window row with a 300 cap was built by two tests, and the one
that still explained itself tested less; they are one. The half of
`a_cap_attribute_narrows_the_widgets_box` that the wrapper's removal left
without its deciding assertion is the allocator's path instead, which
nothing at the root covered.

Format, workspace clippy under -D warnings with and without
layout-diagnostics, 206 ordinary and 210 diagnostic tests, 400 depth-5
trees warm against cold in 64.19s, and the cold dump byte-identical to
2ac0843 across all 34,986 boxes.
2026-09-20 20:13:57 -04:00

44 lines
1.7 KiB
Rust

//! Prints where a cold layout puts every widget of many grown trees, so two
//! commits can be compared on cold layout alone. The warm/cold oracle cannot
//! see a change that moves cold layout, since both of its sides move; this
//! can, by diffing its output across the change:
//!
//! IRIS_DUMP_SEEDS=400 IRIS_DUMP_DEPTH=5 cargo test --release \
//! --test layout_dump -- --ignored --nocapture > /tmp/before.txt
//!
//! then the same after, and `diff` the two. A line is one widget: the seed,
//! its index in creation order, and its box in window pixels, or `-` where
//! it is not drawn. `IRIS_UNBOUNDED=1` drops the trees' intrinsic bounds, as
//! in the diagnostics rig, which compares the two paths over the same shapes.
mod rig;
use iris::harness::Harness;
use iris::random::{Edits, build, plan};
use rig::env;
#[test]
#[ignore = "a dump to diff across commits, not a check"]
fn every_cold_layout_is_printed() {
let seeds = env("IRIS_DUMP_SEEDS", 400_u64);
let depth = env("IRIS_DUMP_DEPTH", 5_usize);
let mut out = String::new();
for seed in 1..=seeds {
let mut harness = Harness::new((1920.0, 1200.0));
let mut plan = plan(seed, depth, &Edits::default());
if env("IRIS_UNBOUNDED", 0_u8) != 0 {
plan.drop_bounds();
}
let (root, tree) = build(&mut harness.rsc, &plan);
harness.state.root = Some(root);
harness.frame();
for (index, id) in tree.ids.iter().enumerate() {
match harness.region(id) {
Some(region) => out.push_str(&format!("{seed} {index} {region:?}\n")),
None => out.push_str(&format!("{seed} {index} -\n")),
}
}
}
print!("{out}");
}