Merge pull request #167 from OpenHFT/codex/verify-affinity-unchanged-after-lock-acquisition

Add test for non-binding lock affinity

Author: peter-lawrey-admin

affinity/src/test/java/net/openhft/affinity/AffinityLockTest.java

@@ -31,6 +31,7 @@
 import java.nio.file.Paths;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.BitSet;
 
 import static net.openhft.affinity.AffinityLock.PROCESSORS;
 import static org.hamcrest.CoreMatchers.is;
@@ -319,6 +320,16 @@ public void testAffinityLockDescriptions() {
         }
     }
 
+    @Test
+    public void acquireLockWithoutBindingDoesNotChangeAffinity() {
+        BitSet before = (BitSet) Affinity.getAffinity().clone();
+        try (AffinityLock lock = AffinityLock.acquireLock(false)) {
+            assertFalse(lock.isBound());
+            assertEquals(before, Affinity.getAffinity());
+        }
+        assertEquals(before, Affinity.getAffinity());
+    }
+
     @Test(expected = IllegalArgumentException.class)
     public void testTooHighCpuId() {
         AffinityLock.acquireLock(123456);