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Add tests for layout and visuals of most egui widgets (#6752)

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This is mostly in preparation for #5830 where I want to ensure that I
don't introduce any regressions
This commit is contained in:
Lucas Meurer
2025-04-16 18:58:58 +02:00
committed by GitHub
parent 0f1d6c2818
commit 501905b60d
29 changed files with 518 additions and 16 deletions
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64
crates/egui_kittest/src/lib.rs
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@@ -274,6 +274,7 @@ impl<'a, State> Harness<'a, State> {
///
/// See also:
/// - [`Harness::try_run`].
/// - [`Harness::try_run_realtime`].
/// - [`Harness::run_ok`].
/// - [`Harness::step`].
/// - [`Harness::run_steps`].
@@ -287,6 +288,27 @@ impl<'a, State> Harness<'a, State> {
}
}
fn _try_run(&mut self, sleep: bool) -> Result<u64, ExceededMaxStepsError> {
let mut steps = 0;
loop {
steps += 1;
self.step();
// We only care about immediate repaints
if self.root_viewport_output().repaint_delay != Duration::ZERO {
break;
} else if sleep {
std::thread::sleep(Duration::from_secs_f32(self.step_dt));
}
if steps > self.max_steps {
return Err(ExceededMaxStepsError {
max_steps: self.max_steps,
repaint_causes: self.ctx.repaint_causes(),
});
}
}
Ok(steps)
}
/// Run until
/// - all animations are done
/// - no more repaints are requested
@@ -302,23 +324,9 @@ impl<'a, State> Harness<'a, State> {
/// - [`Harness::run_ok`].
/// - [`Harness::step`].
/// - [`Harness::run_steps`].
/// - [`Harness::try_run_realtime`].
pub fn try_run(&mut self) -> Result<u64, ExceededMaxStepsError> {
let mut steps = 0;
loop {
steps += 1;
self.step();
// We only care about immediate repaints
if self.root_viewport_output().repaint_delay != Duration::ZERO {
break;
}
if steps > self.max_steps {
return Err(ExceededMaxStepsError {
max_steps: self.max_steps,
repaint_causes: self.ctx.repaint_causes(),
});
}
}
Ok(steps)
self._try_run(false)
}
/// Run until
@@ -333,10 +341,34 @@ impl<'a, State> Harness<'a, State> {
/// - [`Harness::try_run`].
/// - [`Harness::step`].
/// - [`Harness::run_steps`].
/// - [`Harness::try_run_realtime`].
pub fn run_ok(&mut self) -> Option<u64> {
self.try_run().ok()
}
/// Run multiple frames, sleeping for [`HarnessBuilder::with_step_dt`] between frames.
///
/// This is useful to e.g. wait for an async operation to complete (e.g. loading of images).
/// Runs until
/// - all animations are done
/// - no more repaints are requested
/// - the maximum number of steps is reached (See [`HarnessBuilder::with_max_steps`])
///
/// Returns the number of steps that were run.
///
/// # Errors
/// Returns an error if the maximum number of steps is exceeded.
///
/// See also:
/// - [`Harness::run`].
/// - [`Harness::run_ok`].
/// - [`Harness::step`].
/// - [`Harness::run_steps`].
/// - [`Harness::try_run`].
pub fn try_run_realtime(&mut self) -> Result<u64, ExceededMaxStepsError> {
self._try_run(true)
}
/// Run a number of steps.
/// Equivalent to calling [`Harness::step`] x times.
pub fn run_steps(&mut self, steps: usize) {