8209863: Add a test to verify that -XX:+EnableTracing works

Summary: A new test verifies that tracing output occurs with the switch enabled.
Reviewed-by: dholmes, phh
Contributed-by: NXin Liu <xxinliu@amazon.com>

test/runtime/EnableTracing/TestEnableTracing.java

+/*
+ * Copyright (c) 2018, 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 TestEnableTracing
+ * @summary Test if tracing produces the expected output when enabled.
+ * @bug 8209863 8145788
+ * @library /testlibrary
+ * @run main TestEnableTracing
+ */
+
+import com.oracle.java.testlibrary.ProcessTools;
+import com.oracle.java.testlibrary.OutputAnalyzer;
+
+public class TestEnableTracing {
+    public static final String OPENJDK_MARK = "OpenJDK";
+
+    public static void main(String[] args) throws Exception {
+        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+EnableTracing", "-version");
+        OutputAnalyzer output = new OutputAnalyzer(pb.start());
+        if (output.getStderr().contains(OPENJDK_MARK)) {
+            output.shouldMatch("^Class Load");
+            output.shouldContain("Loaded Class ="); // verify TraceStream print_val Klass*
+        }
+        output.shouldHaveExitValue(0);
+
+        pb = ProcessTools.createJavaProcessBuilder("-XX:+EnableTracing", "-XX:+UseLockedTracing", "-Xcomp ", "-version");
+        output = new OutputAnalyzer(pb.start());
+        if (output.getStderr().contains(OPENJDK_MARK)) {
+            output.shouldMatch("^Class Load");
+            output.shouldMatch("^Compilation");
+            output.shouldContain("Java Method ="); // verify TraceStream print_val Method*
+        }
+        output.shouldHaveExitValue(0);
+    }
+}