The harness inspector now speaks the wire protocol over the same
interprocess local socket as the live egui_inspection plugin, in two
modes:
- connect: EGUI_INSPECTION_SOCKET set -> dial the listening socket
(e.g. the kittest MCP bridge).
- spawn: KITTEST_INSPECTOR truthy, no socket -> bind a socket, spawn
the kittest_inspector binary pointed at it, accept.
env_enabled() now also auto-enables when the socket var is set. Pulls
egui_inspection/transport into the inspector_api feature.
- Encode harness frames with egui_inspection::encode_png instead of sending raw RGBA, so
the inspector socket carries compressed bytes.
- Features: pull egui_inspection/png + image/png for the encoder; drop the now-removed
egui_inspection `protocol` feature.
New `InspectorPlugin` (gated behind `inspector` feature) launches a
`kittest_inspector` child process and streams the harness's frames + accesskit
tree updates to it over framed MessagePack on stdin/stdout. The inspector
drives the harness by sending `InspectorCommand`s back; supported commands
include `Step` / `Run` / `Play` / `Pause` (deterministic stepping),
`Handle { events }` (event injection), `Resize`, and `Screenshot`.
Auto-attaches when the `KITTEST_INSPECTOR` env var is truthy — the inspector
binary path can be overridden via `KITTEST_INSPECTOR_PATH`. Uses the new
`egui_inspection::protocol` types and starts every connection with a
`HarnessMessage::Hello { peer_kind: Kittest, capabilities: KITTEST }` so the
inspector can render the right controls.
Also re-exports `egui_inspection` as `egui_kittest::inspector_api` for crates
that only depend on kittest.
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* [x] I have followed the instructions in the PR template
A number of separate commits to possibly easily revert some of them.
General idea: selectively update dependencies to remove transitive
dependencies and multiple versions etc. As well as updating "major" (the
one that `cargo update` doesn't update) version for some in Cargo.toml.
Rendering pipelines in `vello_cpu` wasn't obvious. Now both are used.
Adds a helper to quickly see whats going on in a kittest test.
Not all test have snapshots, but when debugging tests it might still be
useful to see whats actually going on, so this adds a helper fn that
renders a snapshot image to a temporary file and opens it with the
default image viewer:
https://github.com/user-attachments/assets/08785850-0a12-4572-b9b5-cea36951081c
With kittest it was difficult to wait for images to be loaded before
taking a snapshot test.
This PR adds `Harness::with_wait_for_pending_images` (true by default)
which will cause `Harness::run` to sleep until all images are loaded (or
`HarnessBuilder::with_max_steps` is exceeded).
It also adds a new ImageLoader::has_pending and
BytesLoader::has_pending, which should be implemented if things are
loaded / decoded asynchronously.
It reverts https://github.com/emilk/egui/pull/6901 which was my previous
attempt to fix this (but this didn't work since only the tested crate is
compiled with cfg(test) and not it's dependencies)
Continuation of #5713
**Silently breaking changes:**
- Menus now close on click by default, this is configurable via
`PopupCloseBehavior`
**Additional additions:**
- `Button::right_text`
- `StyleModifier`
This is a rewrite of the egui menus, with the following goals:
- submenu buttons should work everywhere, in a popup, context menu,
area, in some random Ui
- remove the menu state from Ui
- should work just like the previous menu
- ~proper support for keyboard navigation~
- It's better now but requires further work to be perfect
- support `PopupCloseBehavior`
* Closes#4607
* [x] I have followed the instructions in the PR template
- Enable all-features when generating docs
- Add x11 feature so it builds on Linux
- Add double hashes to the feature comments so document-features
includes them in the docs
* Closes <https://github.com/emilk/egui/issues/5709>
* [x] I have followed the instructions in the PR template
This adds a `Harness::new_ui`, which accepts a Ui closure and shows the
ui in a central panel. One big benefit is that this allows us to add a
fit_contents method that can run the ui closure with a sizing pass and
resize the "screen" based on the content size.
I also used this to add a snapshot test for the rendering_test at
different scales.
- closes#3491
- closes#3926
This adds a testing library to egui based on
[kittest](https://github.com/rerun-io/kittest). Kittest is a new
[AccessKit](https://github.com/AccessKit/accesskit/)-based testing
library. The api is inspired by the js
[testing-library](https://testing-library.com/) where the idea is also
to query the dom based on accessibility attributes.
We made kittest with egui in mind but it should work with any rust gui
framework with AccessKit support.
It currently has support for:
- running the egui app, frame by frame
- building the AccessKit tree
- ergonomic queries via kittest
- via e.g. get_by_name, get_by_role
- simulating events based on the accesskit node id
- creating arbitrary events based on Harness::input_mut
- rendering screenshots via wgpu
- snapshot tests with these screenshots
A simple test looks like this:
```rust
fn main() {
let mut checked = false;
let app = |ctx: &Context| {
CentralPanel::default().show(ctx, |ui| {
ui.checkbox(&mut checked, "Check me!");
});
};
let mut harness = Harness::builder().with_size(egui::Vec2::new(200.0, 100.0)).build(app);
let checkbox = harness.get_by_name("Check me!");
assert_eq!(checkbox.toggled(), Some(Toggled::False));
checkbox.click();
harness.run();
let checkbox = harness.get_by_name("Check me!");
assert_eq!(checkbox.toggled(), Some(Toggled::True));
// You can even render the ui and do image snapshot tests
#[cfg(all(feature = "wgpu", feature = "snapshot"))]
egui_kittest::image_snapshot(&egui_kittest::wgpu::TestRenderer::new().render(&harness), "readme_example");
}
```
~Since getting wgpu to run in ci is a hassle, I'm taking another shot at
creating a software renderer for egui (ideally without a huge dependency
like skia)~ (this didn't work as well as I hoped and it turns out in CI
you can just run tests on a mac runner which comes with a real GPU)
Here is a example of a failed snapshot test in ci, it will say which
snapshot failed and upload an artifact with the before / after and diff
images:
https://github.com/emilk/egui/actions/runs/11183049487/job/31090724606?pr=5166
