}
BidiSegmentListenerTester tester = new BidiSegmentListenerTester();
StyledText textWidget = getTextWidget();
textWidget.addBidiSegmentListener(tester);
textWidget.setText(" "); //$NON-NLS-1$
textWidget.computeSize(SWT.DEFAULT, SWT.DEFAULT);
textWidget.removeBidiSegmentListener(tester);
brokenBidiPlatformTextWidth = tester.called ? -1 : textWidth;
}