From 5571724fa79cf94608ea915aa6690a7d98ba4513 Mon Sep 17 00:00:00 2001
From: honeywest <50997103+honeywest@users.noreply.github.com>
Date: Wed, 21 Apr 2021 17:32:36 +0800
Subject: [PATCH] Fix prelude0421 (#775)

* add arithmetic test

* optimize code
---
 crates/env/src/arithmetic.rs |  4 ++++
 crates/primitives/src/key.rs | 12 ++++++------
 2 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/crates/env/src/arithmetic.rs b/crates/env/src/arithmetic.rs
index e3038376215..131cfd44aa6 100644
--- a/crates/env/src/arithmetic.rs
+++ b/crates/env/src/arithmetic.rs
@@ -218,6 +218,10 @@ mod tests {
             u64::max_value(),
             Saturating::saturating_mul(u64::max_value(), 2)
         );
+        assert_eq!(
+            i64::max_value(),
+            Saturating::saturating_mul(i64::max_value(), 2)
+        );
         assert_eq!(
             i64::min_value(),
             Saturating::saturating_mul(i64::min_value(), 2)
diff --git a/crates/primitives/src/key.rs b/crates/primitives/src/key.rs
index 3b1878ad2de..d215f6f8cab 100644
--- a/crates/primitives/src/key.rs
+++ b/crates/primitives/src/key.rs
@@ -202,7 +202,7 @@ impl Add<u64> for Key {
     }
 }
 
-impl<'a> Add<u64> for &'a Key {
+impl Add<u64> for &Key {
     type Output = Key;
 
     fn add(self, rhs: u64) -> Self::Output {
@@ -210,19 +210,19 @@ impl<'a> Add<u64> for &'a Key {
     }
 }
 
-impl<'a> Add<&'a u64> for Key {
+impl Add<&u64> for Key {
     type Output = Key;
 
-    fn add(self, rhs: &'a u64) -> Self::Output {
+    fn add(self, rhs: &u64) -> Self::Output {
         <Key as Add<u64>>::add(self, *rhs)
     }
 }
 
-impl<'a, 'b> Add<&'b u64> for &'a Key {
+impl Add<&u64> for &Key {
     type Output = Key;
 
-    fn add(self, rhs: &'b u64) -> Self::Output {
-        <&'a Key as Add<u64>>::add(self, *rhs)
+    fn add(self, rhs: &u64) -> Self::Output {
+        <&Key as Add<u64>>::add(self, *rhs)
     }
 }