Add tests for Atomic*::fetch_{min,max}

JohnTitor · Feb 14, 2021 · d1a541e · d1a541e
1 parent 3158857
commit d1a541e
Showing 1 changed file with 36 additions and 0 deletions.
diff --git 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);