Mock rlimit infinity in virtual memory size test

This commit mocks the value of rlimit infinity in the max size virtual
memory check test. This is to avoid attempting to load the native C
library during the test on Windows which would lead to a permissions
violation (the native C library needs to be loaded before the security
manager is setup).

core/src/main/java/org/elasticsearch/bootstrap/BootstrapCheck.java

@@ -254,7 +254,7 @@ final class BootstrapCheck {
 
         @Override
         public boolean check() {
-            return getMaxSizeVirtualMemory() != Long.MIN_VALUE && getMaxSizeVirtualMemory() != JNACLibrary.RLIM_INFINITY;
+            return getMaxSizeVirtualMemory() != Long.MIN_VALUE && getMaxSizeVirtualMemory() != getRlimInfinity();
         }
 
         @Override
@@ -266,6 +266,11 @@ final class BootstrapCheck {
                 BootstrapInfo.getSystemProperties().get("user.name"));
         }
 
+        // visible for testing
+        long getRlimInfinity() {
+            return JNACLibrary.RLIM_INFINITY;
+        }
+
         // visible for testing
         long getMaxSizeVirtualMemory() {
             return JNANatives.MAX_SIZE_VIRTUAL_MEMORY;

core/src/test/java/org/elasticsearch/bootstrap/BootstrapCheckTests.java

@@ -19,6 +19,7 @@
 
 package org.elasticsearch.bootstrap;
 
+import org.apache.lucene.util.Constants;
 import org.elasticsearch.common.settings.Setting;
 import org.elasticsearch.common.settings.Settings;
 import org.elasticsearch.test.ESTestCase;
@@ -158,13 +159,18 @@ public class BootstrapCheckTests extends ESTestCase {
     }
 
     public void testMaxSizeVirtualMemory() {
-        final long limit = JNACLibrary.RLIM_INFINITY;
-        final AtomicLong maxSizeVirtualMemory = new AtomicLong(randomInt());
+        final long rlimInfinity = Constants.MAC_OS_X ? 9223372036854775807L : -1L;
+        final AtomicLong maxSizeVirtualMemory = new AtomicLong(randomIntBetween(0, Integer.MAX_VALUE));
         final BootstrapCheck.MaxSizeVirtualMemoryCheck check = new BootstrapCheck.MaxSizeVirtualMemoryCheck() {
             @Override
             long getMaxSizeVirtualMemory() {
                 return maxSizeVirtualMemory.get();
             }
+
+            @Override
+            long getRlimInfinity() {
+                return rlimInfinity;
+            }
         };
 
         try {
@@ -174,7 +180,7 @@ public class BootstrapCheckTests extends ESTestCase {
             assertThat(e.getMessage(), containsString("max size virtual memory"));
         }
 
-        maxSizeVirtualMemory.set(limit);
+        maxSizeVirtualMemory.set(rlimInfinity);
 
         BootstrapCheck.check(true, Collections.singletonList(check));