1 use super::*;
2 use tracing_subscriber::{
3 filter::{filter_fn, Targets},
4 prelude::*,
5 };
6
7 #[test]
8 #[cfg_attr(not(feature = "tracing-log"), ignore)]
log_events()9 fn log_events() {
10 // Reproduces https://github.com/tokio-rs/tracing/issues/1563
11 mod inner {
12 pub(super) const MODULE_PATH: &str = module_path!();
13
14 #[tracing::instrument]
15 pub(super) fn logs() {
16 log::debug!("inner");
17 }
18 }
19
20 let filter = Targets::new()
21 .with_default(LevelFilter::DEBUG)
22 .with_target(inner::MODULE_PATH, LevelFilter::WARN);
23
24 let layer =
25 tracing_subscriber::layer::Identity::new().with_filter(filter_fn(move |_meta| true));
26
27 let _guard = tracing_subscriber::registry()
28 .with(filter)
29 .with(layer)
30 .set_default();
31
32 inner::logs();
33 }
34
35 #[test]
inner_layer_short_circuits()36 fn inner_layer_short_circuits() {
37 // This test ensures that when a global filter short-circuits `Interest`
38 // evaluation, we aren't left with a "dirty" per-layer filter state.
39
40 let (layer, handle) = layer::mock()
41 .event(event::msg("hello world"))
42 .done()
43 .run_with_handle();
44
45 let filter = Targets::new().with_target("magic_target", LevelFilter::DEBUG);
46
47 let _guard = tracing_subscriber::registry()
48 // Note: we don't just use a `LevelFilter` for the global filter here,
49 // because it will just return a max level filter, and the chain of
50 // `register_callsite` calls that would trigger the bug never happens...
51 .with(filter::filter_fn(|meta| meta.level() <= &Level::INFO))
52 .with(layer.with_filter(filter))
53 .set_default();
54
55 tracing::debug!("skip me please!");
56 tracing::info!(target: "magic_target", "hello world");
57
58 handle.assert_finished();
59 }
60