test/gc/metaspace/CompressedClassSpaceSizeInJmapHeap.java

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@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2013, 2015, 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.

@@ -28,12 +28,10 @@
  * @library /testlibrary
  * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:CompressedClassSpaceSize=50m CompressedClassSpaceSizeInJmapHeap
  */
 
 import com.oracle.java.testlibrary.*;
-import java.nio.file.*;
-import java.io.File;
 import java.nio.charset.Charset;
 import java.util.List;
 
 public class CompressedClassSpaceSizeInJmapHeap {
     public static void main(String[] args) throws Exception {

@@ -51,38 +49,10 @@
         JDKToolLauncher jmap = JDKToolLauncher.create("jmap")
                                               .addToolArg("-heap")
                                               .addToolArg(pid);
         ProcessBuilder pb = new ProcessBuilder(jmap.getCommand());
 
-        File out = new File("CompressedClassSpaceSizeInJmapHeap.stdout.txt");
-        pb.redirectOutput(out);
-
-        File err = new File("CompressedClassSpaceSizeInJmapHeap.stderr.txt");
-        pb.redirectError(err);
-
-        run(pb);
-
-        OutputAnalyzer output = new OutputAnalyzer(read(out));
+        OutputAnalyzer output = new OutputAnalyzer(pb.start());
+        output.shouldHaveExitValue(0);
         output.shouldContain("CompressedClassSpaceSize = 52428800 (50.0MB)");
-        out.delete();
-    }
-
-    private static void run(ProcessBuilder pb) throws Exception {
-        Process p = pb.start();
-        p.waitFor();
-        int exitValue = p.exitValue();
-        if (exitValue != 0) {
-            throw new Exception("jmap -heap exited with error code: " + exitValue);
-        }
-    }
-
-    private static String read(File f) throws Exception {
-        Path p = f.toPath();
-        List<String> lines = Files.readAllLines(p, Charset.defaultCharset());
-
-        StringBuilder sb = new StringBuilder();
-        for (String line : lines) {
-            sb.append(line).append('\n');
-        }
-        return sb.toString();
     }
 }