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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
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*
* 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 ) .
*
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* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
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*/
/*
* @ test
* @ bug 8265227 8266753
* @ summary Test Proc
* @ library / test / lib
*/
import jdk.test.lib.process.Proc;
import java.util.Random;
import java.util.List;
public class ProcTest {
public static void main(String[] args) throws Exception {
if (args.length == 0 ) {
// Test launcher
Proc p1 = Proc.create("ProcTest" )
.args("1" )
.debug("p1" )
.start();
Proc p2 = Proc.create("ProcTest" )
.args("2" )
.debug("p2" )
.start();
while (true ) {
String s1 = p1.readData(); // p1 shows to p2
if (s1 != null ) p2.println(s1);
String s2 = p2.readData(); // p2 shows to p1
if (s2 != null ) p1.println(s2);
if (s1 == null && s2 == null ) break ;
}
p1.waitFor();
p2.waitFor();
} else {
// Sub process, args[0] is random seed.
List<String> gestures = List.of("Rock" , "Paper" , "Scissors" );
int wins = 0 ;
Random r = new Random(Long .parseLong(args[0 ]));
while (true ) {
String my = gestures.get(r.nextInt(3 ));
Proc.textOut(my); // show first, next line might block
String peer = Proc.textIn();
if (!my.equals(peer)) {
if (my.equals("Paper" ) && peer.equals("Rock" )
|| my.equals("Rock" ) && peer.equals("Scissors" )
|| my.equals("Scissors" ) && peer.equals("Paper" )) {
wins++;
} else {
wins--;
}
}
// Message not from textOut() will be ignored by readData().
System.out.println(my + " vs " + peer + ", I win " + wins + " times" );
if (wins > 2 || wins < -2 ) {
break ;
}
}
}
}
}
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