From bbc7470dc555a532f7fa9cbbd139ef63a5308beb Mon Sep 17 00:00:00 2001
From: Nick Mathewson <nickm@torproject.org>
Date: Wed, 25 May 2022 11:43:09 -0400
Subject: [PATCH] More tests for ClockSkew.
---
crates/tor-proto/src/util/skew.rs | 40 +++++++++++++++++++++++++++++++
1 file changed, 40 insertions(+)
diff --git a/crates/tor-proto/src/util/skew.rs b/crates/tor-proto/src/util/skew.rs
index f423a92e12..35a98abb27 100644
--- a/crates/tor-proto/src/util/skew.rs
+++ b/crates/tor-proto/src/util/skew.rs
@@ -145,6 +145,8 @@ impl PartialOrd for ClockSkew {
#[cfg(test)]
mod test {
+ #![allow(clippy::unwrap_used)]
+
use super::*;
#[test]
@@ -175,4 +177,42 @@ mod test {
);
assert_eq!(skew, ClockSkew::None);
}
+
+ #[test]
+ fn from_f64() {
+ use ClockSkew as CS;
+ use Duration as D;
+
+ assert_eq!(CS::from_secs_f64(0.0), Some(CS::None));
+ assert_eq!(CS::from_secs_f64(f64::MIN_POSITIVE / 2.0), Some(CS::None)); // subnormal
+ assert_eq!(CS::from_secs_f64(1.0), Some(CS::None));
+ assert_eq!(CS::from_secs_f64(-1.0), Some(CS::None));
+ assert_eq!(CS::from_secs_f64(3.0), Some(CS::Fast(D::from_secs(3))));
+ assert_eq!(CS::from_secs_f64(-3.0), Some(CS::Slow(D::from_secs(3))));
+
+ assert_eq!(CS::from_secs_f64(1.0e100), Some(CS::Fast(D::MAX)));
+ assert_eq!(CS::from_secs_f64(-1.0e100), Some(CS::Slow(D::MAX)));
+
+ assert_eq!(CS::from_secs_f64(f64::NAN), None);
+ assert_eq!(CS::from_secs_f64(f64::INFINITY), Some(CS::Fast(D::MAX)));
+ assert_eq!(CS::from_secs_f64(f64::NEG_INFINITY), Some(CS::Slow(D::MAX)));
+ }
+
+ #[test]
+ fn order() {
+ use rand::seq::SliceRandom as _;
+ use ClockSkew as CS;
+ let sorted: Vec<ClockSkew> = vec![-10.0, -5.0, 0.0, 0.0, 10.0, 20.0]
+ .into_iter()
+ .map(|n| CS::from_secs_f64(n).unwrap())
+ .collect();
+
+ let mut rng = rand::thread_rng();
+ let mut v = sorted.clone();
+ for _ in 0..100 {
+ v.shuffle(&mut rng);
+ v.sort();
+ assert_eq!(v, sorted);
+ }
+ }
}
--
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