1 | #![cfg (feature = "std" )] |
2 | use tracing_mock::*; |
3 | |
4 | #[test] |
5 | fn scoped_clobbers_global() { |
6 | // Reproduces https://github.com/tokio-rs/tracing/issues/2050 |
7 | |
8 | let (scoped, scoped_handle) = subscriber::mock() |
9 | .event(event::msg("before global" )) |
10 | .event(event::msg("before drop" )) |
11 | .only() |
12 | .run_with_handle(); |
13 | |
14 | let (global, global_handle) = subscriber::mock() |
15 | .event(event::msg("after drop" )) |
16 | .only() |
17 | .run_with_handle(); |
18 | |
19 | // Set a scoped default subscriber, returning a guard. |
20 | let guard = tracing::subscriber::set_default(scoped); |
21 | tracing::info!("before global" ); |
22 | |
23 | // Now, set the global default. |
24 | tracing::subscriber::set_global_default(global) |
25 | .expect("global default should not already be set" ); |
26 | // This event should still be collected by the scoped default. |
27 | tracing::info!("before drop" ); |
28 | |
29 | // Drop the guard. Now, the global default subscriber should be used. |
30 | drop(guard); |
31 | tracing::info!("after drop" ); |
32 | |
33 | scoped_handle.assert_finished(); |
34 | global_handle.assert_finished(); |
35 | } |
36 | |