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#![cfg(all(feature = "env-filter", feature = "fmt"))]
use tracing::{self, subscriber::with_default, Span};
use tracing_subscriber::{filter::EnvFilter, FmtSubscriber};
#[test]
fn duplicate_spans() {
let subscriber = FmtSubscriber::builder()
.with_env_filter(EnvFilter::new("[root]=debug"))
.finish();
with_default(subscriber, || {
let root = tracing::debug_span!("root");
root.in_scope(|| {
// root:
assert_eq!(root, Span::current(), "Current span must be 'root'");
let leaf = tracing::debug_span!("leaf");
leaf.in_scope(|| {
// root:leaf:
assert_eq!(leaf, Span::current(), "Current span must be 'leaf'");
root.in_scope(|| {
// root:leaf:
assert_eq!(
leaf,
Span::current(),
"Current span must be 'leaf' after entering twice the 'root' span"
);
})
});
// root:
assert_eq!(
root,
Span::current(),
"Current span must be root ('leaf' exited, nested 'root' exited)"
);
root.in_scope(|| {
assert_eq!(root, Span::current(), "Current span must be root");
});
// root:
assert_eq!(
root,
Span::current(),
"Current span must still be root after exiting nested 'root'"
);
});
});
}
|
