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Fixed the image tests working on the same temporary file

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This commit is contained in:
Thorsten Sommer 2026-09-15 15:06:21 +02:00
parent 73ebd6b5f5
commit 994473adf7
Signed by untrusted user who does not match committer: tsommer
GPG Key ID: 371BBA77A02C0108
1 changed files with 14 additions and 5 deletions
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19
runtime/src/image.rs
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@ -222,12 +222,21 @@ fn encode(image: &DynamicImage, format: ImageFormat) -> Result<Vec<u8>, (StatusC
mod tests {
use super::*;
/// A path no other test works on.
///
/// The name is counted rather than timed. The clock looks unique but is not: these tests run
/// in parallel, and two of them reading it within the same tick got the same path, so one
/// removed the file the other was still working on. That failed about one run in twelve, and
/// never when the tests ran one after another.
fn temporary_image_path(extension: &str) -> std::path::PathBuf {
let unique = std::time::SystemTime::now()
.duration_since(std::time::UNIX_EPOCH)
.unwrap()
.as_nanos();
std::env::temp_dir().join(format!("mwai-visual-briefing-test-{unique}.{extension}"))
use std::sync::atomic::{AtomicU32, Ordering};
//
// The process id is part of it as well, so that two test runs at once stay apart.
//
static NEXT_IMAGE: AtomicU32 = AtomicU32::new(0);
let unique = NEXT_IMAGE.fetch_add(1, Ordering::Relaxed);
std::env::temp_dir().join(format!("mwai-visual-briefing-test-{}-{unique}.{extension}", std::process::id()))
}
#[test]