changeset 5685:24a31f177411

8006564: Test sun/security/util/Oid/S11N.sh fails with timeout on Linux 32-bit Reviewed-by: alanb
author weijun
date Fri, 01 Feb 2013 07:39:41 +0800
parents 347a2e8436a9
children 83c4b326f1f9
files test/sun/security/util/Oid/S11N.java test/sun/security/util/Oid/S11N.sh test/sun/security/util/Oid/SerialTest.java
diffstat 3 files changed, 246 insertions(+), 251 deletions(-) [+]
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/sun/security/util/Oid/S11N.java	Fri Feb 01 07:39:41 2013 +0800
@@ -0,0 +1,246 @@
+/*
+ * 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 4811968 6908628 8006564
+ * @run main S11N check
+ * @summary Serialization compatibility with old versions (and fixes)
+ */
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.util.HashMap;
+import java.util.Map;
+import sun.misc.BASE64Encoder;
+import sun.security.util.ObjectIdentifier;
+
+public class S11N {
+    static String[] SMALL= {
+        "0.0",
+        "1.1",
+        "2.2",
+        "1.2.3456",
+        "1.2.2147483647.4",
+        "1.2.268435456.4",
+    };
+
+    static String[] HUGE = {
+        "2.16.764.1.3101555394.1.0.100.2.1",
+        "1.2.2147483648.4",
+        "2.3.4444444444444444444444",
+        "1.2.8888888888888888.33333333333333333.44444444444444",
+    };
+
+    // Do not use j.u.Base64, the test needs to run in jdk6
+    static BASE64Encoder encoder = new BASE64Encoder() {
+        @Override
+        protected int bytesPerLine() {
+            return 48;
+        }
+    };
+
+    public static void main(String[] args) throws Exception {
+        if (args[0].equals("check")) {
+            int version = Integer.valueOf(System.getProperty("java.version")
+                    .split("\\.")[1]);
+            System.out.println("version is " + version);
+            if (version >= 7) {
+                for (String oid: SMALL) {
+                    // 7 -> 7
+                    check(out(oid), oid);
+                    // 6 -> 7
+                    check(out6(oid), oid);
+                }
+                for (String oid: HUGE) {
+                    // 7 -> 7
+                    check(out(oid), oid);
+                }
+            } else {
+                for (String oid: SMALL) {
+                    // 6 -> 6
+                    check(out(oid), oid);
+                    // 7 -> 6
+                    check(out7(oid), oid);
+                }
+                for (String oid: HUGE) {
+                    // 7 -> 6 fails for HUGE oids
+                    boolean ok = false;
+                    try {
+                        check(out7(oid), oid);
+                        ok = true;
+                    } catch (Exception e) {
+                        System.out.println(e);
+                    }
+                    if (ok) {
+                        throw new Exception();
+                    }
+                }
+            }
+        } else {
+            // Generates the JDK6 serialized string inside this test, call
+            //      $JDK7/bin/java S11N dump7
+            //      $JDK6/bin/java S11N dump6
+            // and paste the output at the end of this test.
+            dump(args[0], SMALL);
+            // For jdk6, the following line will throw an exception, ignore it
+            dump(args[0], HUGE);
+        }
+    }
+
+    // Gets the serialized form for jdk6
+    private static byte[] out6(String oid) throws Exception {
+        return new sun.misc.BASE64Decoder().decodeBuffer(dump6.get(oid));
+    }
+
+    // Gets the serialized form for jdk7
+    private static byte[] out7(String oid) throws Exception {
+        return new sun.misc.BASE64Decoder().decodeBuffer(dump7.get(oid));
+    }
+
+    // Gets the serialized form for this java
+    private static byte[] out(String oid) throws Exception {
+        ByteArrayOutputStream bout = new ByteArrayOutputStream();
+        new ObjectOutputStream(bout).writeObject(new ObjectIdentifier(oid));
+        return bout.toByteArray();
+    }
+
+    // Makes sure serialized form can be deserialized
+    private static void check(byte[] in, String oid) throws Exception {
+        ObjectIdentifier o = (ObjectIdentifier) (
+                new ObjectInputStream(new ByteArrayInputStream(in)).readObject());
+        if (!o.toString().equals(oid)) {
+            throw new Exception("Read Fail " + o + ", not " + oid);
+        }
+    }
+
+    // dump serialized form to java code style text
+    private static void dump(String title, String[] oids) throws Exception {
+        for (String oid: oids) {
+            String[] base64 = encoder.encodeBuffer(out(oid)).split("\n");
+            System.out.println("        " + title + ".put(\"" + oid + "\",");
+            for (int i = 0; i<base64.length; i++) {
+                System.out.print("            \"" + base64[i] + "\"");
+                if (i == base64.length - 1) {
+                    System.out.println(");");
+                } else {
+                    System.out.println(" +");
+                }
+            }
+        }
+    }
+
+    // Do not use diamond operator, this test is also meant to run in jdk6
+    private static Map<String,String> dump7 = new HashMap<String,String>();
+    private static Map<String,String> dump6 = new HashMap<String,String>();
+
+    static {
+        //////////////  PASTE BEGIN //////////////
+        dump7.put("0.0",
+            "rO0ABXNyACJzdW4uc2VjdXJpdHkudXRpbC5PYmplY3RJZGVudGlmaWVyeLIO7GQX" +
+            "fy4DAANJAAxjb21wb25lbnRMZW5MAApjb21wb25lbnRzdAASTGphdmEvbGFuZy9P" +
+            "YmplY3Q7WwAIZW5jb2Rpbmd0AAJbQnhwAAAAAnVyAAJbSU26YCZ26rKlAgAAeHAA" +
+            "AAACAAAAAAAAAAB1cgACW0Ks8xf4BghU4AIAAHhwAAAAAQB4");
+        dump7.put("1.1",
+            "rO0ABXNyACJzdW4uc2VjdXJpdHkudXRpbC5PYmplY3RJZGVudGlmaWVyeLIO7GQX" +
+            "fy4DAANJAAxjb21wb25lbnRMZW5MAApjb21wb25lbnRzdAASTGphdmEvbGFuZy9P" +
+            "YmplY3Q7WwAIZW5jb2Rpbmd0AAJbQnhwAAAAAnVyAAJbSU26YCZ26rKlAgAAeHAA" +
+            "AAACAAAAAQAAAAF1cgACW0Ks8xf4BghU4AIAAHhwAAAAASl4");
+        dump7.put("2.2",
+            "rO0ABXNyACJzdW4uc2VjdXJpdHkudXRpbC5PYmplY3RJZGVudGlmaWVyeLIO7GQX" +
+            "fy4DAANJAAxjb21wb25lbnRMZW5MAApjb21wb25lbnRzdAASTGphdmEvbGFuZy9P" +
+            "YmplY3Q7WwAIZW5jb2Rpbmd0AAJbQnhwAAAAAnVyAAJbSU26YCZ26rKlAgAAeHAA" +
+            "AAACAAAAAgAAAAJ1cgACW0Ks8xf4BghU4AIAAHhwAAAAAVJ4");
+        dump7.put("1.2.3456",
+            "rO0ABXNyACJzdW4uc2VjdXJpdHkudXRpbC5PYmplY3RJZGVudGlmaWVyeLIO7GQX" +
+            "fy4DAANJAAxjb21wb25lbnRMZW5MAApjb21wb25lbnRzdAASTGphdmEvbGFuZy9P" +
+            "YmplY3Q7WwAIZW5jb2Rpbmd0AAJbQnhwAAAAA3VyAAJbSU26YCZ26rKlAgAAeHAA" +
+            "AAADAAAAAQAAAAIAAA2AdXIAAltCrPMX+AYIVOACAAB4cAAAAAMqmwB4");
+        dump7.put("1.2.2147483647.4",
+            "rO0ABXNyACJzdW4uc2VjdXJpdHkudXRpbC5PYmplY3RJZGVudGlmaWVyeLIO7GQX" +
+            "fy4DAANJAAxjb21wb25lbnRMZW5MAApjb21wb25lbnRzdAASTGphdmEvbGFuZy9P" +
+            "YmplY3Q7WwAIZW5jb2Rpbmd0AAJbQnhwAAAABHVyAAJbSU26YCZ26rKlAgAAeHAA" +
+            "AAAEAAAAAQAAAAJ/////AAAABHVyAAJbQqzzF/gGCFTgAgAAeHAAAAAHKof///9/" +
+            "BHg=");
+        dump7.put("1.2.268435456.4",
+            "rO0ABXNyACJzdW4uc2VjdXJpdHkudXRpbC5PYmplY3RJZGVudGlmaWVyeLIO7GQX" +
+            "fy4DAANJAAxjb21wb25lbnRMZW5MAApjb21wb25lbnRzdAASTGphdmEvbGFuZy9P" +
+            "YmplY3Q7WwAIZW5jb2Rpbmd0AAJbQnhwAAAABHVyAAJbSU26YCZ26rKlAgAAeHAA" +
+            "AAAEAAAAAQAAAAIQAAAAAAAABHVyAAJbQqzzF/gGCFTgAgAAeHAAAAAHKoGAgIAA" +
+            "BHg=");
+        dump7.put("2.16.764.1.3101555394.1.0.100.2.1",
+            "rO0ABXNyACJzdW4uc2VjdXJpdHkudXRpbC5PYmplY3RJZGVudGlmaWVyeLIO7GQX" +
+            "fy4DAANJAAxjb21wb25lbnRMZW5MAApjb21wb25lbnRzdAASTGphdmEvbGFuZy9P" +
+            "YmplY3Q7WwAIZW5jb2Rpbmd0AAJbQnhw/////3NyAD5zdW4uc2VjdXJpdHkudXRp" +
+            "bC5PYmplY3RJZGVudGlmaWVyJEh1Z2VPaWROb3RTdXBwb3J0ZWRCeU9sZEpESwAA" +
+            "AAAAAAABAgAAeHB1cgACW0Ks8xf4BghU4AIAAHhwAAAADmCFfAGLxvf1QgEAZAIB" +
+            "eA==");
+        dump7.put("1.2.2147483648.4",
+            "rO0ABXNyACJzdW4uc2VjdXJpdHkudXRpbC5PYmplY3RJZGVudGlmaWVyeLIO7GQX" +
+            "fy4DAANJAAxjb21wb25lbnRMZW5MAApjb21wb25lbnRzdAASTGphdmEvbGFuZy9P" +
+            "YmplY3Q7WwAIZW5jb2Rpbmd0AAJbQnhw/////3NyAD5zdW4uc2VjdXJpdHkudXRp" +
+            "bC5PYmplY3RJZGVudGlmaWVyJEh1Z2VPaWROb3RTdXBwb3J0ZWRCeU9sZEpESwAA" +
+            "AAAAAAABAgAAeHB1cgACW0Ks8xf4BghU4AIAAHhwAAAAByqIgICAAAR4");
+        dump7.put("2.3.4444444444444444444444",
+            "rO0ABXNyACJzdW4uc2VjdXJpdHkudXRpbC5PYmplY3RJZGVudGlmaWVyeLIO7GQX" +
+            "fy4DAANJAAxjb21wb25lbnRMZW5MAApjb21wb25lbnRzdAASTGphdmEvbGFuZy9P" +
+            "YmplY3Q7WwAIZW5jb2Rpbmd0AAJbQnhw/////3NyAD5zdW4uc2VjdXJpdHkudXRp" +
+            "bC5PYmplY3RJZGVudGlmaWVyJEh1Z2VPaWROb3RTdXBwb3J0ZWRCeU9sZEpESwAA" +
+            "AAAAAAABAgAAeHB1cgACW0Ks8xf4BghU4AIAAHhwAAAADFOD4e+HpNG968eOHHg=");
+        dump7.put("1.2.8888888888888888.33333333333333333.44444444444444",
+            "rO0ABXNyACJzdW4uc2VjdXJpdHkudXRpbC5PYmplY3RJZGVudGlmaWVyeLIO7GQX" +
+            "fy4DAANJAAxjb21wb25lbnRMZW5MAApjb21wb25lbnRzdAASTGphdmEvbGFuZy9P" +
+            "YmplY3Q7WwAIZW5jb2Rpbmd0AAJbQnhw/////3NyAD5zdW4uc2VjdXJpdHkudXRp" +
+            "bC5PYmplY3RJZGVudGlmaWVyJEh1Z2VPaWROb3RTdXBwb3J0ZWRCeU9sZEpESwAA" +
+            "AAAAAAABAgAAeHB1cgACW0Ks8xf4BghU4AIAAHhwAAAAGCqP5Yzbxa6cOLubj9ek" +
+            "japVio3AusuOHHg=");
+
+        dump6.put("0.0",
+            "rO0ABXNyACJzdW4uc2VjdXJpdHkudXRpbC5PYmplY3RJZGVudGlmaWVyeLIO7GQX" +
+            "fy4CAAJJAAxjb21wb25lbnRMZW5bAApjb21wb25lbnRzdAACW0l4cAAAAAJ1cgAC" +
+            "W0lNumAmduqypQIAAHhwAAAAAgAAAAAAAAAA");
+        dump6.put("1.1",
+            "rO0ABXNyACJzdW4uc2VjdXJpdHkudXRpbC5PYmplY3RJZGVudGlmaWVyeLIO7GQX" +
+            "fy4CAAJJAAxjb21wb25lbnRMZW5bAApjb21wb25lbnRzdAACW0l4cAAAAAJ1cgAC" +
+            "W0lNumAmduqypQIAAHhwAAAAAgAAAAEAAAAB");
+        dump6.put("2.2",
+            "rO0ABXNyACJzdW4uc2VjdXJpdHkudXRpbC5PYmplY3RJZGVudGlmaWVyeLIO7GQX" +
+            "fy4CAAJJAAxjb21wb25lbnRMZW5bAApjb21wb25lbnRzdAACW0l4cAAAAAJ1cgAC" +
+            "W0lNumAmduqypQIAAHhwAAAAAgAAAAIAAAAC");
+        dump6.put("1.2.3456",
+            "rO0ABXNyACJzdW4uc2VjdXJpdHkudXRpbC5PYmplY3RJZGVudGlmaWVyeLIO7GQX" +
+            "fy4CAAJJAAxjb21wb25lbnRMZW5bAApjb21wb25lbnRzdAACW0l4cAAAAAN1cgAC" +
+            "W0lNumAmduqypQIAAHhwAAAAAwAAAAEAAAACAAANgA==");
+        dump6.put("1.2.2147483647.4",
+            "rO0ABXNyACJzdW4uc2VjdXJpdHkudXRpbC5PYmplY3RJZGVudGlmaWVyeLIO7GQX" +
+            "fy4CAAJJAAxjb21wb25lbnRMZW5bAApjb21wb25lbnRzdAACW0l4cAAAAAR1cgAC" +
+            "W0lNumAmduqypQIAAHhwAAAABAAAAAEAAAACf////wAAAAQ=");
+        dump6.put("1.2.268435456.4",
+            "rO0ABXNyACJzdW4uc2VjdXJpdHkudXRpbC5PYmplY3RJZGVudGlmaWVyeLIO7GQX" +
+            "fy4CAAJJAAxjb21wb25lbnRMZW5bAApjb21wb25lbnRzdAACW0l4cAAAAAR1cgAC" +
+            "W0lNumAmduqypQIAAHhwAAAABAAAAAEAAAACEAAAAAAAAAQ=");
+        //////////////  PASTE END //////////////
+    }
+}
--- a/test/sun/security/util/Oid/S11N.sh	Thu Jan 31 16:47:54 2013 -0500
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,185 +0,0 @@
-#
-# Copyright (c) 2004, 2009, 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 4811968 6908628
-# @summary Serialization compatibility with old versions (and fix)
-# @author Weijun Wang
-#
-# set a few environment variables so that the shell-script can run stand-alone
-# in the source directory
-
-if [ "${TESTSRC}" = "" ] ; then
-  TESTSRC="."
-fi
-if [ "${TESTCLASSES}" = "" ] ; then
-  TESTCLASSES="."
-fi
-if [ "${TESTJAVA}" = "" ] ; then
-  echo "TESTJAVA not set.  Test cannot execute."
-  echo "FAILED!!!"
-  exit 1
-fi
-
-# set platform-dependent variables
-PF=""
-
-OS=`uname -s`
-case "$OS" in
-  SunOS )
-    FS="/"
-    ARCH=`isainfo`
-    case "$ARCH" in
-      sparc* )
-        PF="solaris-sparc"
-        ;;
-      i[3-6]86 )
-        PF="solaris-i586"
-        ;;
-      amd64* )
-        PF="solaris-amd64"
-        ;;
-      * )
-        echo "Unsupported System: Solaris ${ARCH}"
-        exit 0;
-        ;;
-    esac
-    ;;
-  Linux )
-    ARCH=`uname -m`
-    FS="/"
-    case "$ARCH" in
-      i[3-6]86 )
-        PF="linux-i586"
-        ;;
-      amd64* | x86_64 )
-        PF="linux-amd64"
-        ;;
-      * )
-        echo "Unsupported System: Linux ${ARCH}"
-        exit 0;
-        ;;
-    esac
-    ;;
-  Windows* )
-    FS="\\"
-    PF="windows-i586"
-
-    # 'uname -m' does not give us enough information -
-    #  should rely on $PROCESSOR_IDENTIFIER (as is done in Defs-windows.gmk),
-    #  but JTREG does not pass this env variable when executing a shell script.
-    #
-    #  execute test program - rely on it to exit if platform unsupported
-
-    ;;
-  * )
-    echo "Unsupported System: ${OS}"
-    exit 0;
-    ;;
-esac
-
-echo "==================================================="
-echo "Try to set ALT_JAVA_RE_JDK if you see timeout error"
-echo "==================================================="
-
-# the test code
-
-${TESTJAVA}${FS}bin${FS}javac -target 1.4 -source 1.4 \
-        -d . ${TESTSRC}${FS}SerialTest.java || exit 10
-
-# You can set ALT_JAVA_RE_JDK to another location that contains the
-# binaries for older JDK releases. You can set it to a non-existent
-# directory to skip the interop tests between different versions.
-
-if [ "$ALT_JAVA_RE_JDK" = "" ]; then
-    JAVA_RE_JDK=/java/re/j2se
-else
-    JAVA_RE_JDK=$ALT_JAVA_RE_JDK
-fi
-
-OLDJAVA="
-    $JAVA_RE_JDK/1.6.0/latest/binaries/${PF}
-    $JAVA_RE_JDK/1.5.0/latest/binaries/${PF}
-    $JAVA_RE_JDK/1.4.2/latest/binaries/${PF}
-"
-
-SMALL="
-    0.0
-    1.1
-    2.2
-    1.2.3456
-    1.2.2147483647.4
-    1.2.268435456.4
-"
-
-HUGE="
-    2.16.764.1.3101555394.1.0.100.2.1
-    1.2.2147483648.4
-    2.3.4444444444444444444444
-    1.2.888888888888888888.111111111111111.2222222222222.33333333333333333.44444444444444
-"
-
-for oid in ${SMALL}; do
-    echo ${oid}
-    # new ->
-    ${TESTJAVA}${FS}bin${FS}java SerialTest out ${oid} > tmp.oid.serial || exit 1
-    # -> new
-    ${TESTJAVA}${FS}bin${FS}java SerialTest in ${oid} < tmp.oid.serial || exit 2
-    for oldj in ${OLDJAVA}; do
-        if [ -d ${oldj} ]; then
-            echo ${oldj}
-            # -> old
-            ${oldj}${FS}bin${FS}java SerialTest in ${oid} < tmp.oid.serial || exit 3
-            # old ->
-            ${oldj}${FS}bin${FS}java SerialTest out ${oid} > tmp.oid.serial.old || exit 4
-            # -> new
-            ${TESTJAVA}${FS}bin${FS}java SerialTest in ${oid} < tmp.oid.serial.old || exit 5
-        fi
-    done
-done
-
-for oid in ${HUGE}; do
-    echo ${oid}
-    # new ->
-    ${TESTJAVA}${FS}bin${FS}java SerialTest out ${oid} > tmp.oid.serial || exit 1
-    # -> new
-    ${TESTJAVA}${FS}bin${FS}java SerialTest in ${oid} < tmp.oid.serial || exit 2
-    for oldj in ${OLDJAVA}; do
-        if [ -d ${oldj} ]; then
-            echo ${oldj}
-            # -> old
-            ${oldj}${FS}bin${FS}java SerialTest badin < tmp.oid.serial || exit 3
-        fi
-    done
-done
-
-rm -f tmp.oid.serial
-rm -f tmp.oid.serial.old
-rm -f SerialTest.class
-
-for oldj in ${OLDJAVA}; do
-    if [ ! -d ${oldj} ]; then
-        echo WARNING: ${oldj} is missing. Test incomplete! > /dev/stderr
-    fi
-done
-
-exit 0
--- a/test/sun/security/util/Oid/SerialTest.java	Thu Jan 31 16:47:54 2013 -0500
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,66 +0,0 @@
-/*
- * Copyright (c) 2004, 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.
- */
-
-/*
- * read S11.sh
- */
-import java.io.*;
-import sun.security.util.*;
-
-/**
- * Test OID serialization between versions
- *
- * java SerialTest out oid  // write a OID into System.out
- * java SerialTest in oid   // read from System.in and compare it with oid
- * java SerialTest badin    // make sure *cannot* read from System.in
- */
-class SerialTest {
-    public static void main(String[] args) throws Exception {
-        if (args[0].equals("out"))
-            out(args[1]);
-        else if (args[0].equals("in"))
-            in(args[1]);
-        else
-            badin();
-    }
-
-    static void in(String oid) throws Exception {
-        ObjectIdentifier o = (ObjectIdentifier) (new ObjectInputStream(System.in).readObject());
-        if (!o.toString().equals(oid))
-            throw new Exception("Read Fail " + o + ", not " + oid);
-    }
-
-    static void badin() throws Exception {
-        boolean pass = true;
-        try {
-            new ObjectInputStream(System.in).readObject();
-        } catch (Exception e) {
-            pass = false;
-        }
-        if (pass) throw new Exception("Should fail but not");
-    }
-
-    static void out(String oid) throws Exception {
-        new ObjectOutputStream(System.out).writeObject(new ObjectIdentifier(oid));
-    }
-}