matrix_sdk_test_utils/
lib.rs

1/// Initialize a tracing subscriber if the target architecture is not WASM.
2///
3/// Uses a sensible default filter that can be overridden through the `RUST_LOG`
4/// environment variable and runs once before all tests by using the [`ctor`]
5/// crate.
6///
7/// Invoke this macro once per compilation unit (`lib.rs`, `tests/*.rs`,
8/// `tests/*/main.rs`).
9#[macro_export]
10macro_rules! init_tracing_for_tests {
11    () => {
12        #[cfg(not(target_family = "wasm"))]
13        #[$crate::__macro_support::ctor]
14        fn init_logging() {
15            use tracing_subscriber::{layer::SubscriberExt, util::SubscriberInitExt};
16            use $crate::__macro_support::tracing_subscriber;
17
18            tracing_subscriber::registry()
19                .with(tracing_subscriber::EnvFilter::try_from_default_env().unwrap_or_else(|_| {
20                    // Output is only printed for failing tests, but still we shouldn't overload
21                    // the output with unnecessary info. When debugging a specific test, it's easy
22                    // to override this default by setting the `RUST_LOG` environment variable.
23                    //
24                    // Since tracing_subscriber does prefix matching, the `matrix_sdk=` directive
25                    // takes effect for all the main crates (`matrix_sdk_base`, `matrix_sdk_crypto`
26                    // and so on).
27                    "info,matrix_sdk=debug".into()
28                }))
29                .with(tracing_subscriber::fmt::layer().with_test_writer())
30                .init();
31        }
32    };
33}
34
35#[doc(hidden)]
36pub mod __macro_support {
37    #[cfg(not(target_family = "wasm"))]
38    pub use ctor::ctor;
39    #[cfg(not(target_family = "wasm"))]
40    pub use tracing_subscriber;
41}
matrix_sdk_test_utils/lib.rs

matrix_sdk_test_utils/
lib.rs
