8016065: Write regression test for 7167142

Summary: Regression tests written for both test cases (.hotspotrc and .hotspot_compiler). Also reviewed by mikhailo.seledtsov@oracle.com
Reviewed-by: zgu, coleenp

test/runtime/CommandLine/CompilerConfigFileWarning.java

+/*
+ * Copyright (c) 2013, 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
+ * @bug 7167142
+ * @summary Warn if unused .hotspot_compiler file is present
+ * @library /testlibrary
+ */
+
+import java.io.PrintWriter;
+import com.oracle.java.testlibrary.*;
+
+public class CompilerConfigFileWarning {
+    public static void main(String[] args) throws Exception {
+        String vmVersion = System.getProperty("java.vm.version");
+        if (vmVersion.toLowerCase().contains("debug") || vmVersion.toLowerCase().contains("jvmg")) {
+            System.out.println("Skip on debug builds since we'll always read the file there");
+            return;
+        }
+
+        PrintWriter pw = new PrintWriter(".hotspot_compiler");
+        pw.println("aa");
+        pw.close();
+
+        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-version");
+        OutputAnalyzer output = new OutputAnalyzer(pb.start());
+        output.shouldContain("warning: .hotspot_compiler file is present but has been ignored.  Run with -XX:CompileCommandFile=.hotspot_compiler to load the file.");
+    }
+}

test/runtime/CommandLine/ConfigFileWarning.java

+/*
+ * Copyright (c) 2013, 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
+ * @bug 7167142
+ * @summary Warn if unused .hotspot_rc file is present
+ * @library /testlibrary
+ */
+
+import java.io.PrintWriter;
+import com.oracle.java.testlibrary.*;
+
+public class ConfigFileWarning {
+    public static void main(String[] args) throws Exception {
+        String vmVersion = System.getProperty("java.vm.version");
+        if (vmVersion.toLowerCase().contains("debug") || vmVersion.toLowerCase().contains("jvmg")) {
+            System.out.println("Skip on debug builds since we'll always read the file there");
+            return;
+        }
+
+        PrintWriter pw = new PrintWriter(".hotspotrc");
+        pw.println("aa");
+        pw.close();
+
+        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-version");
+        OutputAnalyzer output = new OutputAnalyzer(pb.start());
+        output.shouldContain("warning: .hotspotrc file is present but has been ignored.  Run with -XX:Flags=.hotspotrc to load the file.");
+    }
+}