From 172a813829505e4bc4bc62c55ca58c2a24a9f1d4 Mon Sep 17 00:00:00 2001
From: Diggory Hardy <git@dhardy.name>
Date: Mon, 16 May 2022 09:25:28 +0100
Subject: [PATCH 1/2] Add const fn none()

---
 src/duration.rs   | 5 +++++
 src/instant.rs    | 5 +++++
 tests/duration.rs | 5 +++++
 tests/instant.rs  | 5 +++++
 4 files changed, 20 insertions(+)

diff --git a/src/duration.rs b/src/duration.rs
index e2e8559..922d402 100644
--- a/src/duration.rs
+++ b/src/duration.rs
@@ -47,6 +47,11 @@ impl Duration {
     // TODO: duration_constants https://github.com/rust-lang/rust/issues/57391
     // TODO: div_duration https://github.com/rust-lang/rust/issues/63139
 
+    /// Returns a "none" value
+    pub const fn none() -> Self {
+        Self(None)
+    }
+
     /// A duration of zero time.
     ///
     /// # Examples
diff --git a/src/instant.rs b/src/instant.rs
index 22d6aef..09b19a6 100644
--- a/src/instant.rs
+++ b/src/instant.rs
@@ -60,6 +60,11 @@ use super::{pair_and_then, Duration, TryFromTimeError};
 pub struct Instant(Option<time::Instant>);
 
 impl Instant {
+    /// Returns a "none" value
+    pub const fn none() -> Self {
+        Self(None)
+    }
+
     /// Returns an instant corresponding to "now".
     ///
     /// # Examples
diff --git a/tests/duration.rs b/tests/duration.rs
index 993cd08..6f10c6e 100644
--- a/tests/duration.rs
+++ b/tests/duration.rs
@@ -5,6 +5,11 @@ use core::time;
 
 use easytime::Duration;
 
+#[test]
+fn none() {
+    assert!(Duration::none().is_none());
+}
+
 #[test]
 fn cmp() {
     assert!(Duration::from_secs(1) == Duration::from_secs(1));
diff --git a/tests/instant.rs b/tests/instant.rs
index 1a0bcf0..d7d9f5e 100644
--- a/tests/instant.rs
+++ b/tests/instant.rs
@@ -21,6 +21,11 @@ pub mod std_tests {
         }};
     }
 
+    #[test]
+    fn none() {
+        assert!(Instant::none().is_none());
+    }
+
     #[test]
     fn instant_monotonic() {
         let a = Instant::now();

From edbeaf6393e720d93afe69e9b203dec252ed32cd Mon Sep 17 00:00:00 2001
From: Diggory Hardy <git@dhardy.name>
Date: Fri, 20 May 2022 16:16:34 +0100
Subject: [PATCH 2/2] Use assoc. const over const method

---
 src/duration.rs   | 4 +---
 src/instant.rs    | 4 +---
 tests/duration.rs | 2 +-
 tests/instant.rs  | 2 +-
 4 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/src/duration.rs b/src/duration.rs
index 922d402..6dc76f5 100644
--- a/src/duration.rs
+++ b/src/duration.rs
@@ -48,9 +48,7 @@ impl Duration {
     // TODO: div_duration https://github.com/rust-lang/rust/issues/63139
 
     /// Returns a "none" value
-    pub const fn none() -> Self {
-        Self(None)
-    }
+    pub const NONE: Self = Self(None);
 
     /// A duration of zero time.
     ///
diff --git a/src/instant.rs b/src/instant.rs
index 09b19a6..4ff2ad4 100644
--- a/src/instant.rs
+++ b/src/instant.rs
@@ -61,9 +61,7 @@ pub struct Instant(Option<time::Instant>);
 
 impl Instant {
     /// Returns a "none" value
-    pub const fn none() -> Self {
-        Self(None)
-    }
+    pub const NONE: Self = Self(None);
 
     /// Returns an instant corresponding to "now".
     ///
diff --git a/tests/duration.rs b/tests/duration.rs
index 6f10c6e..e79ea37 100644
--- a/tests/duration.rs
+++ b/tests/duration.rs
@@ -7,7 +7,7 @@ use easytime::Duration;
 
 #[test]
 fn none() {
-    assert!(Duration::none().is_none());
+    assert!(Duration::NONE.is_none());
 }
 
 #[test]
diff --git a/tests/instant.rs b/tests/instant.rs
index d7d9f5e..f77ccf5 100644
--- a/tests/instant.rs
+++ b/tests/instant.rs
@@ -23,7 +23,7 @@ pub mod std_tests {
 
     #[test]
     fn none() {
-        assert!(Instant::none().is_none());
+        assert!(Instant::NONE.is_none());
     }
 
     #[test]