31 lines
827 B
Rust
31 lines
827 B
Rust
use tower::{service_fn, Service, ServiceExt};
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use tower_fallback::Fallback;
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#[tokio::test]
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async fn fallback() {
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let _init_guard = zebra_test::init();
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// we'd like to use Transcript here but it can't handle errors :(
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let svc1 = service_fn(|val: u64| async move {
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if val < 10 {
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Ok(val)
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} else {
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Err("too big value on svc1")
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}
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});
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let svc2 = service_fn(|val: u64| async move {
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if val < 20 {
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Ok(100 + val)
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} else {
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Err("too big value on svc2")
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}
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});
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let mut svc = Fallback::new(svc1, svc2);
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assert_eq!(svc.ready().await.unwrap().call(1).await.unwrap(), 1);
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assert_eq!(svc.ready().await.unwrap().call(11).await.unwrap(), 111);
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assert!(svc.ready().await.unwrap().call(21).await.is_err());
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}
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