1 /*
2 * Copyright (c) 2008, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /*
25 @test
26 @key headful
27 @bug 6681889
28 @summary Showing a deserialized frame should not throw NPE
29 @author anthony.petrov@...: area=awt.toplevel
30 @run main PropertyChangeListenerLockSerialization
31 */
32
33
34 /**
35 * PropertyChangeListenerLockSerialization.java
36 *
37 * summary: Showing a deserialized frame should not throw NPE
38 */
39
40 import java.awt.*;
41 import java.awt.event.*;
42 import java.io.*;
43 import java.net.*;
44
45 public class PropertyChangeListenerLockSerialization
46 {
47
48 private static void init()
49 {
50 //*** Create instructions for the user here ***
51
52 String[] instructions =
53 {
54 "This is an AUTOMATIC test, simply wait until it is done.",
55 "The result (passed or failed) will be shown in the",
56 "message window below."
57 };
58 Sysout.createDialog( );
59 Sysout.printInstructions( instructions );
60
61 File file =
62 new File(System.getProperty("test.classes", "."), "frame.ser");
63
64 Frame f = new Frame("Frame");
65 f.setBounds(250, 50, 300, 300);
66 try {
67 OutputStream o = new FileOutputStream(file);
68 ObjectOutputStream oo = new ObjectOutputStream(o);
69
70 oo.writeObject(f);
71 oo.close();
72 } catch (IOException ex) {
73 ex.printStackTrace();
74 fail("Unable to serialize the frame: " + ex);
75 }
76
77 // Cleanup the frame
78 f.dispose();
79 f = null;
80
81 try {
82 ObjectInputStream i = new ObjectInputStream(new FileInputStream(file));
83
84 f = (Frame)i.readObject();
85 f.show();
86 } catch (NullPointerException ex) {
87 ex.printStackTrace();
88 fail("The NullPointerException has been thrown: " + ex);
89 } catch (Exception ex) {
90 ex.printStackTrace();
91 fail("Error while deserializing the frame: " + ex);
92 }
93
94 // Cleanup the frame
95 f.dispose();
96 f = null;
97
98 pass();
99
100 }//End init()
101
102
103
104 /*****************************************************
105 * Standard Test Machinery Section
106 * DO NOT modify anything in this section -- it's a
107 * standard chunk of code which has all of the
108 * synchronisation necessary for the test harness.
109 * By keeping it the same in all tests, it is easier
110 * to read and understand someone else's test, as
111 * well as insuring that all tests behave correctly
112 * with the test harness.
113 * There is a section following this for test-
114 * classes
115 ******************************************************/
116 private static boolean theTestPassed = false;
117 private static boolean testGeneratedInterrupt = false;
118 private static String failureMessage = "";
119
120 private static Thread mainThread = null;
121
122 private static int sleepTime = 300000;
123
124 // Not sure about what happens if multiple of this test are
125 // instantiated in the same VM. Being static (and using
126 // static vars), it aint gonna work. Not worrying about
127 // it for now.
128 public static void main( String args[] ) throws InterruptedException
129 {
130 mainThread = Thread.currentThread();
131 try
132 {
133 init();
134 }
135 catch( TestPassedException e )
136 {
137 //The test passed, so just return from main and harness will
138 // interepret this return as a pass
139 return;
140 }
141 //At this point, neither test pass nor test fail has been
142 // called -- either would have thrown an exception and ended the
143 // test, so we know we have multiple threads.
144
145 //Test involves other threads, so sleep and wait for them to
146 // called pass() or fail()
147 try
148 {
149 Thread.sleep( sleepTime );
150 //Timed out, so fail the test
151 throw new RuntimeException( "Timed out after " + sleepTime/1000 + " seconds" );
152 }
153 catch (InterruptedException e)
154 {
155 //The test harness may have interrupted the test. If so, rethrow the exception
156 // so that the harness gets it and deals with it.
157 if( ! testGeneratedInterrupt ) throw e;
158
159 //reset flag in case hit this code more than once for some reason (just safety)
160 testGeneratedInterrupt = false;
161
162 if ( theTestPassed == false )
163 {
164 throw new RuntimeException( failureMessage );
165 }
166 }
167
168 }//main
169
170 public static synchronized void setTimeoutTo( int seconds )
171 {
172 sleepTime = seconds * 1000;
173 }
174
175 public static synchronized void pass()
176 {
177 Sysout.println( "The test passed." );
178 Sysout.println( "The test is over, hit Ctl-C to stop Java VM" );
179 //first check if this is executing in main thread
180 if ( mainThread == Thread.currentThread() )
181 {
182 //Still in the main thread, so set the flag just for kicks,
183 // and throw a test passed exception which will be caught
184 // and end the test.
185 theTestPassed = true;
186 throw new TestPassedException();
187 }
188 theTestPassed = true;
189 testGeneratedInterrupt = true;
190 mainThread.interrupt();
191 }//pass()
192
193 public static synchronized void fail()
194 {
195 //test writer didn't specify why test failed, so give generic
196 fail( "it just plain failed! :-)" );
197 }
198
199 public static synchronized void fail( String whyFailed )
200 {
201 Sysout.println( "The test failed: " + whyFailed );
202 Sysout.println( "The test is over, hit Ctl-C to stop Java VM" );
203 //check if this called from main thread
204 if ( mainThread == Thread.currentThread() )
205 {
206 //If main thread, fail now 'cause not sleeping
207 throw new RuntimeException( whyFailed );
208 }
209 theTestPassed = false;
210 testGeneratedInterrupt = true;
211 failureMessage = whyFailed;
212 mainThread.interrupt();
213 }//fail()
214
215 }// class PropertyChangeListenerLockSerialization
216
217 //This exception is used to exit from any level of call nesting
218 // when it's determined that the test has passed, and immediately
219 // end the test.
220 class TestPassedException extends RuntimeException
221 {
222 }
223
224 //*********** End Standard Test Machinery Section **********
225
226
227 //************ Begin classes defined for the test ****************
228
229 // if want to make listeners, here is the recommended place for them, then instantiate
230 // them in init()
231
232 /* Example of a class which may be written as part of a test
233 class NewClass implements anInterface
234 {
235 static int newVar = 0;
236
237 public void eventDispatched(AWTEvent e)
238 {
239 //Counting events to see if we get enough
240 eventCount++;
241
242 if( eventCount == 20 )
243 {
244 //got enough events, so pass
245
246 PropertyChangeListenerLockSerialization.pass();
247 }
248 else if( tries == 20 )
249 {
250 //tried too many times without getting enough events so fail
251
252 PropertyChangeListenerLockSerialization.fail();
253 }
254
255 }// eventDispatched()
256
257 }// NewClass class
258
259 */
260
261
262 //************** End classes defined for the test *******************
263
264
265
266
267 /****************************************************
268 Standard Test Machinery
269 DO NOT modify anything below -- it's a standard
270 chunk of code whose purpose is to make user
271 interaction uniform, and thereby make it simpler
272 to read and understand someone else's test.
273 ****************************************************/
274
275 /**
276 This is part of the standard test machinery.
277 It creates a dialog (with the instructions), and is the interface
278 for sending text messages to the user.
279 To print the instructions, send an array of strings to Sysout.createDialog
280 WithInstructions method. Put one line of instructions per array entry.
281 To display a message for the tester to see, simply call Sysout.println
282 with the string to be displayed.
283 This mimics System.out.println but works within the test harness as well
284 as standalone.
285 */
286
287 class Sysout
288 {
289 private static TestDialog dialog;
290
291 public static void createDialogWithInstructions( String[] instructions )
292 {
293 dialog = new TestDialog( new Frame(), "Instructions" );
294 dialog.printInstructions( instructions );
295 dialog.setVisible(true);
296 println( "Any messages for the tester will display here." );
297 }
298
299 public static void createDialog( )
300 {
301 dialog = new TestDialog( new Frame(), "Instructions" );
302 String[] defInstr = { "Instructions will appear here. ", "" } ;
303 dialog.printInstructions( defInstr );
304 dialog.setVisible(true);
305 println( "Any messages for the tester will display here." );
306 }
307
308
309 public static void printInstructions( String[] instructions )
310 {
311 dialog.printInstructions( instructions );
312 }
313
314
315 public static void println( String messageIn )
316 {
317 dialog.displayMessage( messageIn );
318 System.out.println(messageIn);
319 }
320
321 }// Sysout class
322
323 /**
324 This is part of the standard test machinery. It provides a place for the
325 test instructions to be displayed, and a place for interactive messages
326 to the user to be displayed.
327 To have the test instructions displayed, see Sysout.
328 To have a message to the user be displayed, see Sysout.
329 Do not call anything in this dialog directly.
330 */
331 class TestDialog extends Dialog
332 {
333
334 TextArea instructionsText;
335 TextArea messageText;
336 int maxStringLength = 80;
337
338 //DO NOT call this directly, go through Sysout
339 public TestDialog( Frame frame, String name )
340 {
341 super( frame, name );
342 int scrollBoth = TextArea.SCROLLBARS_BOTH;
343 instructionsText = new TextArea( "", 15, maxStringLength, scrollBoth );
344 add( "North", instructionsText );
345
346 messageText = new TextArea( "", 5, maxStringLength, scrollBoth );
347 add("Center", messageText);
348
349 pack();
350
351 setVisible(true);
352 }// TestDialog()
353
354 //DO NOT call this directly, go through Sysout
355 public void printInstructions( String[] instructions )
356 {
357 //Clear out any current instructions
358 instructionsText.setText( "" );
359
360 //Go down array of instruction strings
361
362 String printStr, remainingStr;
363 for( int i=0; i < instructions.length; i++ )
364 {
365 //chop up each into pieces maxSringLength long
366 remainingStr = instructions[ i ];
367 while( remainingStr.length() > 0 )
368 {
369 //if longer than max then chop off first max chars to print
370 if( remainingStr.length() >= maxStringLength )
371 {
372 //Try to chop on a word boundary
373 int posOfSpace = remainingStr.
374 lastIndexOf( ' ', maxStringLength - 1 );
375
376 if( posOfSpace <= 0 ) posOfSpace = maxStringLength - 1;
377
378 printStr = remainingStr.substring( 0, posOfSpace + 1 );
379 remainingStr = remainingStr.substring( posOfSpace + 1 );
380 }
381 //else just print
382 else
383 {
384 printStr = remainingStr;
385 remainingStr = "";
386 }
387
388 instructionsText.append( printStr + "\n" );
389
390 }// while
391
392 }// for
393
394 }//printInstructions()
395
396 //DO NOT call this directly, go through Sysout
397 public void displayMessage( String messageIn )
398 {
399 messageText.append( messageIn + "\n" );
400 System.out.println(messageIn);
401 }
402
403 }// TestDialog class