forked from bevyengine/bevy
/
ci_testing.rs
99 lines (91 loc) · 3.24 KB
/
ci_testing.rs
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//! Utilities for testing in CI environments.
use bevy_app::{App, AppExit, Update};
use bevy_ecs::{
entity::Entity,
prelude::{resource_exists, Resource},
query::With,
schedule::IntoSystemConfigs,
system::{Local, Query, Res, ResMut},
};
use bevy_render::view::screenshot::ScreenshotManager;
use bevy_time::TimeUpdateStrategy;
use bevy_utils::{tracing::info, Duration};
use bevy_window::PrimaryWindow;
use serde::Deserialize;
/// A configuration struct for automated CI testing.
///
/// It gets used when the `bevy_ci_testing` feature is enabled to automatically
/// exit a Bevy app when run through the CI. This is needed because otherwise
/// Bevy apps would be stuck in the game loop and wouldn't allow the CI to progress.
#[derive(Deserialize, Resource)]
pub struct CiTestingConfig {
/// The number of frames after which Bevy should exit.
pub exit_after: Option<u32>,
/// The time in seconds to update for each frame.
pub frame_time: Option<f32>,
/// Frames at which to capture a screenshot.
#[serde(default)]
pub screenshot_frames: Vec<u32>,
}
fn ci_testing_exit_after(
mut current_frame: bevy_ecs::prelude::Local<u32>,
ci_testing_config: bevy_ecs::prelude::Res<CiTestingConfig>,
mut app_exit_events: bevy_ecs::event::EventWriter<AppExit>,
) {
if let Some(exit_after) = ci_testing_config.exit_after {
if *current_frame > exit_after {
app_exit_events.send(AppExit);
info!("Exiting after {} frames. Test successful!", exit_after);
}
}
*current_frame += 1;
}
pub(crate) fn setup_app(app: &mut App) -> &mut App {
#[cfg(not(target_arch = "wasm32"))]
let config: CiTestingConfig = {
let filename = std::env::var("CI_TESTING_CONFIG")
.unwrap_or_else(|_| "ci_testing_config.ron".to_string());
ron::from_str(
&std::fs::read_to_string(filename)
.expect("error reading CI testing configuration file"),
)
.expect("error deserializing CI testing configuration file")
};
#[cfg(target_arch = "wasm32")]
let config: CiTestingConfig = {
let config = include_str!("../../../ci_testing_config.ron");
ron::from_str(config).expect("error deserializing CI testing configuration file")
};
if let Some(frame_time) = config.frame_time {
app.world
.insert_resource(TimeUpdateStrategy::ManualDuration(Duration::from_secs_f32(
frame_time,
)));
}
app.insert_resource(config).add_systems(
Update,
(
ci_testing_exit_after,
ci_testing_screenshot_at.run_if(resource_exists::<ScreenshotManager>),
),
);
app
}
fn ci_testing_screenshot_at(
mut current_frame: Local<u32>,
ci_testing_config: Res<CiTestingConfig>,
mut screenshot_manager: ResMut<ScreenshotManager>,
main_window: Query<Entity, With<PrimaryWindow>>,
) {
if ci_testing_config
.screenshot_frames
.contains(&*current_frame)
{
info!("Taking a screenshot at frame {}.", *current_frame);
let path = format!("./screenshot-{}.png", *current_frame);
screenshot_manager
.save_screenshot_to_disk(main_window.single(), path)
.unwrap();
}
*current_frame += 1;
}