JCK: 6b b15 qac
JDK: 6 b105
FAILED on: Windows platform (Vista, 2003)

api/javax_swing/JDialog/index.html#NewModalityTests[constructor_05]
api/javax_swing/JDialog/index.html#NewModalityTests[constructor_11]
api/javax_swing/JDialog/index.html#NewModalityTests[constructor_16]

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For constructor JDialog(Frame, String, boolean,GraphicsConfiguration) the spec says:
"Parameters:
gc - the GraphicsConfiguration of the target screen device.
If gc is null, the same GraphicsConfiguration as the owning Frame is used."

This assertion is not satisfied on Windows 2003/Vista.

Please see the following code taken from the testcase that has failed:

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// GC is null
JDialog dialog = new JDialog(new JDialog((Frame)null), "doesn't matter", false, null);
Window owner = dialog.getOwner();
assertEquals(owner.getGraphicsConfiguration(), dialog.getGraphicsConfiguration();

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The last assertion fails with a message like this:

com.sun.tck.lib.AssertionFailedException: Expected equal to : "sun.awt.Win32GraphicsConfig@110c424[dev=Win32GraphicsDevice[screen=0],pixfmt=0]", was given: "sun.awt.Win32GraphicsConfig@1aaf0b3[dev=Win32GraphicsDevice[screen=0],pixfmt=2]"