From d1a541e34290364681550e82fe606d21c7235345 Mon Sep 17 00:00:00 2001
From: bjorn3 <bjorn3@users.noreply.github.com>
Date: Sun, 14 Feb 2021 11:31:33 +0100
Subject: [PATCH] Add tests for Atomic*::fetch_{min,max}

---
 library/core/tests/atomic.rs | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/library/core/tests/atomic.rs b/library/core/tests/atomic.rs
index 2d1e4496aeef7..762642aecdab6 100644
--- a/library/core/tests/atomic.rs
+++ b/library/core/tests/atomic.rs
@@ -59,6 +59,24 @@ fn uint_xor() {
     assert_eq!(x.load(SeqCst), 0xf731 ^ 0x137f);
 }
 
+#[test]
+fn uint_min() {
+    let x = AtomicUsize::new(0xf731);
+    assert_eq!(x.fetch_min(0x137f, SeqCst), 0xf731);
+    assert_eq!(x.load(SeqCst), 0x137f);
+    assert_eq!(x.fetch_min(0xf731, SeqCst), 0x137f);
+    assert_eq!(x.load(SeqCst), 0x137f);
+}
+
+#[test]
+fn uint_max() {
+    let x = AtomicUsize::new(0x137f);
+    assert_eq!(x.fetch_max(0xf731, SeqCst), 0x137f);
+    assert_eq!(x.load(SeqCst), 0xf731);
+    assert_eq!(x.fetch_max(0x137f, SeqCst), 0xf731);
+    assert_eq!(x.load(SeqCst), 0xf731);
+}
+
 #[test]
 fn int_and() {
     let x = AtomicIsize::new(0xf731);
@@ -87,6 +105,24 @@ fn int_xor() {
     assert_eq!(x.load(SeqCst), 0xf731 ^ 0x137f);
 }
 
+#[test]
+fn int_min() {
+    let x = AtomicIsize::new(0xf731);
+    assert_eq!(x.fetch_min(0x137f, SeqCst), 0xf731);
+    assert_eq!(x.load(SeqCst), 0x137f);
+    assert_eq!(x.fetch_min(0xf731, SeqCst), 0x137f);
+    assert_eq!(x.load(SeqCst), 0x137f);
+}
+
+#[test]
+fn int_max() {
+    let x = AtomicIsize::new(0x137f);
+    assert_eq!(x.fetch_max(0xf731, SeqCst), 0x137f);
+    assert_eq!(x.load(SeqCst), 0xf731);
+    assert_eq!(x.fetch_max(0x137f, SeqCst), 0xf731);
+    assert_eq!(x.load(SeqCst), 0xf731);
+}
+
 static S_FALSE: AtomicBool = AtomicBool::new(false);
 static S_TRUE: AtomicBool = AtomicBool::new(true);
 static S_INT: AtomicIsize = AtomicIsize::new(0);