58 lines
1.5 KiB
Rust
58 lines
1.5 KiB
Rust
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extern crate wasm_bindgen_test;
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use instant::{Instant, SystemTime};
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use std::time::Duration;
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use wasm_bindgen_test::*;
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wasm_bindgen_test_configure!(run_in_browser);
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// run these tests using: wasm-pack test --chrome --headless -- --features wasm-bindgen
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#[wasm_bindgen_test]
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fn test_instant_now() {
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let now = Instant::now();
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#[cfg(feature = "inaccurate")]
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while now.elapsed().as_millis() == 0 {}
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#[cfg(not(feature = "inaccurate"))]
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assert!(now.elapsed().as_nanos() > 0);
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}
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#[wasm_bindgen_test]
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fn test_duration() {
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let now = Instant::now();
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let one_sec = Duration::from_secs(1);
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assert!(now.elapsed() < one_sec);
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}
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// Duration::new will overflow when you have u64::MAX seconds and one billion nanoseconds.
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// <https://doc.rust-lang.org/std/time/struct.Duration.html#method.new>
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const ONE_BILLION: u32 = 1_000_000_000;
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#[wasm_bindgen_test]
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fn test_checked_add() {
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let now = Instant::now();
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assert!(now.checked_add(Duration::from_millis(1)).is_some());
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assert_eq!(
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None,
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now.checked_add(Duration::new(u64::MAX, ONE_BILLION - 1))
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);
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}
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#[wasm_bindgen_test]
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fn test_checked_sub() {
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let now = Instant::now();
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assert!(now.checked_sub(Duration::from_millis(1)).is_some());
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assert!(now
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.checked_sub(Duration::new(u64::MAX, ONE_BILLION - 1))
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.is_none());
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}
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#[wasm_bindgen_test]
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fn test_system_time() {
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assert!(SystemTime::UNIX_EPOCH
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.duration_since(SystemTime::now())
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.is_err());
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}
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