8032771: The flag VerifySilently misses a test case

Summary: Add test case for the VerifySilently flag.
Reviewed-by: brutisso

test/gc/TestVerifySilently.java

+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/* @test TestVerifySilently.java
+ * @key gc
+ * @bug 8032771
+ * @summary Test silent verification.
+ * @library /testlibrary
+ */
+
+import com.oracle.java.testlibrary.OutputAnalyzer;
+import com.oracle.java.testlibrary.ProcessTools;
+import java.util.ArrayList;
+import java.util.Collections;
+
+class RunSystemGC {
+  public static void main(String args[]) throws Exception {
+    System.gc();
+  }
+}
+
+
+public class TestVerifySilently {
+  private static String[] getTestJavaOpts() {
+    String testVmOptsStr = System.getProperty("test.java.opts");
+    if (!testVmOptsStr.isEmpty()) {
+      return testVmOptsStr.split(" ");
+    } else {
+      return new String[] {};
+    }
+  }
+
+  private static OutputAnalyzer runTest(boolean verifySilently) throws Exception {
+    ArrayList<String> vmOpts = new ArrayList();
+
+    Collections.addAll(vmOpts, getTestJavaOpts());
+    Collections.addAll(vmOpts, new String[] {"-XX:+UnlockDiagnosticVMOptions",
+                                             "-XX:+VerifyDuringStartup",
+                                             "-XX:+VerifyBeforeGC",
+                                             "-XX:+VerifyAfterGC",
+                                             "-XX:" + (verifySilently ? "+":"-") + "VerifySilently",
+                                             RunSystemGC.class.getName()});
+    ProcessBuilder pb =
+      ProcessTools.createJavaProcessBuilder(vmOpts.toArray(new String[vmOpts.size()]));
+    OutputAnalyzer output = new OutputAnalyzer(pb.start());
+
+    System.out.println("Output:\n" + output.getOutput());
+    return output;
+  }
+
+
+  public static void main(String args[]) throws Exception {
+
+    OutputAnalyzer output;
+
+    output = runTest(false);
+    output.shouldContain("[Verifying");
+    output.shouldHaveExitValue(0);
+
+    output = runTest(true);
+    output.shouldNotContain("[Verifying");
+    output.shouldHaveExitValue(0);
+  }
+}