[HARMONY-2610] [classlib][awt] Compatibility: java.awt.GraphicsDevice.getDisplayMode() on RI throws unspecified NPE while Harmony doesn't

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Won't Fix
• Component/s: Non-bug differences from RI
• Assignee: Alexei Zakharov
• Reporter: Ilya Okomin
• Created: 11/Dec/06 15:06
• Updated: 23/Jan/07 10:45
• Resolved: 23/Jan/07 10:45

Description

Harmony for java.awt.GraphicsDevice.getDisplayMode() does not throw unspecified NPE while RI does.

Test case for reproducing:
------------------ test.java -----------------
import junit.framework.TestCase;
import junit.textui.TestRunner;

import java.awt.GraphicsDevice;
import java.awt.GraphicsConfiguration;

public class test extends TestCase {

public static void main(String args[])

{ TestRunner.run(test.class); }

private static class TestGraphicsDevice extends GraphicsDevice {
public int getType()

{ return GraphicsDevice.TYPE_IMAGE_BUFFER; }

public String getIDstring()

{ return "A"; }

public GraphicsConfiguration[] getConfigurations()

{ return new GraphicsConfiguration[0]; }

public GraphicsConfiguration getDefaultConfiguration()

{ return null; }

}

public void testRun() {
TestGraphicsDevice localTestGraphicsDevice = new TestGraphicsDevice();
try

{ System.out.println("Display mode = " + localTestGraphicsDevice.getDisplayMode()); fail("NPE Expected!"); }

catch (NullPointerException e)

{ e.printStackTrace(); }

}
}
----------------------------------
Output RI:
========
.java.lang.NullPointerException
at java.awt.GraphicsDevice.getDisplayMode(GraphicsDevice.java:271)
at test.testRun(test.java:37)
at jrockit.reflect.VirtualNativeMethodInvoker.invoke(Ljava.lang.Object;[Ljava.lang.Object;)Ljava.lang.Object;(Unknown Source)
at java.lang.reflect.Method.invoke(Ljava.lang.Object;[Ljava.lang.Object;I)Ljava.lang.Object;(Unknown Source)
at junit.framework.TestCase.runTest(TestCase.java:154)
at junit.framework.TestCase.runBare(TestCase.java:127)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:118)
at junit.framework.TestSuite.runTest(TestSuite.java:208)
at junit.framework.TestSuite.run(TestSuite.java:203)
at junit.textui.TestRunner.doRun(TestRunner.java:116)
at junit.textui.TestRunner.doRun(TestRunner.java:109)
at junit.textui.TestRunner.run(TestRunner.java:72)
at junit.textui.TestRunner.run(TestRunner.java:57)
at test.main(test.java:12)

Time: 0,04

OK (1 test)

Output Harmony:
=============
.Display mode = java.awt.DisplayMode@2079f204
F
Time: 0.04
There was 1 failure:
1) testRun(test)junit.framework.AssertionFailedError: NPE Expected!
at test.testRun(test.java:36)
at java.lang.reflect.VMReflection.invokeMethod(Native Method)
at test.main(test.java:10)

FAILURES!!!
Tests run: 1, Failures: 1, Errors: 0

IMO this bug can be marked as non-bug difference, since Harmony creates DisplayMode object with default parameters and RI throws unspecified exception. Any thoughts?